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Thread: How does LHC prove there isn't higgs particle?

  1. #1

    How does LHC prove there isn't higgs particle?

    Why is it that people say the LHC will either find the higgs particle or prove that the higgs particle doesn't exist? If it does find the higgs particle, then one could say that it exists. But, if it doesn't find the higgs, it means that the higgs particle doesn't exist. It's like a fortune telling trick.

    How come no one said these thing about the other particle accelerators? And how long does the machine have to run before we declare that the LHC hasn't found the higgs particle? Right now people say the LHC hasn't found it because the probability quarks smashing into each other is very low, such an event is rare.

    Also, if the LHC finds the higgs, then would their be any reasons to keep making bigger particle accelerators?

    Additional questions: How do the detectors work? Are they looking for disruptions in the magnetic field? But then how do they detect neutrally charged particles like neutrinos? And how would they detect a higgs particle?
    Last edited by tgoolsby2; 2011-Feb-16 at 01:08 AM. Reason: Didn't want to make a separate post for a related question.

  2. #2
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    The Higgs is predicted to have a mass and other properties within a certain range and the LHC because it operates at such high energies is able to explore the whole range so if it doesn't produce the Higgs we can confidently say that a particle with the properties predicted for it doesn't exist.

    The reason that no other particle accelerator has been able to fairly conclusively say that the Higgs exists or not is that none of them other than the LHC is able to look across the whole range of possibilities for it because they haven't been powerful enough.

    If the LHC does find the Higgs then there will still be plenty of reasons to keep building bigger and more powerful accelerators, despite the impression that the media tends to give the Higgs isn't the be all and end all of particle physics, there is lots more even more exotic stuff to look for (dark matter particles, magnetic monopoles, supersymetric partners, ect).

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    You could be in a bit of a rush. How fast do you want answers from experiments? In particle physics they must perform over one billion experiments and get predicted results 99.999% of the time before scientists can claim a discovery has been made.
    The LHC was not built to perform just one experiment. It will be doing many and the greater and greater energies are going to be used by medical labs using undulators to generate higher energy X-rays to investigate the behavior of viruses invading host cells in greater details than the lower energy beamlines can. This is what most particle accelerators are used for. Drug research, bullet proof vests, better fuels and better lithium batteries along with paints that act as solar cells and a host of other projects. The increased abilities to control higher energy beamlines require more advanced detectors.

    Detectors work with the same principle that you use when looking in your back yard the morning after a snow fall. If you were suspicious that someone was driving a vehicle or even a bicycle in back of your house the night before you would find evidence in the trails left behind. Thicker tracks implies a more massive vehicle. When you look up into the sky your eyes act as a detector, seeing the contrails that jets leave behind. In that case it is the thinner ones that are most recent so this detector is a touch different. In a particle accelerator they started with that same type of set up with bubble chambers. The particles would collide with a controlled medium that left visible trails which gave clues. Placing strong magnets along the outside of the beamlines would cause small particles with opposite charges to be diverted toward those poles, revealing the charge, mass and momentum of the particle. If no trail exists along one pathway and a "V" shaped path exists then we have a creation event, likely a by product of a short-half life heavier particle that decayed.

    Many beams smash into targets using small fermions while other beams use protons and still others use entire nuclei. Other beams smash particles into each other instead of a target and those resulting pathways are studied. Meanwhile, all energy has to be accounted for. Energy is converted and not created so that when there is a violation to energy conservation, the scientists know they must account for it. They must ramp up the energy of the beamline to find the particle that caused the violation and the amount of violation gives a hint to how much mass the unknown particle has.

    That is a brief and incomplete 2 cents on my part.

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    Quote Originally Posted by blueshift View Post
    In particle physics they must perform over one billion experiments...
    ... and they don't always turn out the same. An asymmetry in the weak interaction might show itself only once out of tens of thousands (millions?) of interactions.
    Everyone is entitled to his own opinion, but not his own facts.

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    Quote Originally Posted by blueshift View Post
    Y... This is what most particle accelerators are used for. Drug research, bullet proof vests, better fuels and better lithium batteries along with paints that act as solar cells and a host of other projects. ...
    WHAT? Can you point out to me where a particle accelerator was used to create bullet proof vests?!

  6. #6
    Probably it's not fair to use the phrase "prove it doesn't exist." Rather, it would be, "shows that it is almost certain that it doesn't exist." Because it's always finding that something is 99.999% certain, which always leave the chance that ran across the one in a million chance that you just happened not to find it.
    As above, so below

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    The upper mass limit of the Higgs is constrained by theory to be less than something like 280 GeV/c2 and unlikely to be above 200 GeV/c2. That is basically because if it were that large it would show up in certain electroweak interactions. It would allow new pathways for decay and things like that which would change the probability of the other decays we can and do see in smaller accelerators. You have to bear in mind, of course, that new physics could change those predictions and therefore shift the predicted mass. The constraints are based on the assumption that the Standard Model is right.

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    Quote Originally Posted by Jens View Post
    Probably it's not fair to use the phrase "prove it doesn't exist." Rather, it would be, "shows that it is almost certain that it doesn't exist." Because it's always finding that something is 99.999% certain, which always leave the chance that ran across the one in a million chance that you just happened not to find it.
    Actually, the 'prove it dosent exist' means that the theory no longer fits observation so the theory must change. There is a specific range of parameters that the particle fits into in the current theory. Even if the particle is found, if it was a very anomalously low probability to detect it, then the theory is going to have to change to take that into account. That is likely to set off a chain reaction of other changing parameters. After that, it is likely that the particle found isnt the particle they were looking for.

    Does mean a whole lot of new physics tho. Win-Win to me

  9. #9
    Find new physics e.g. Z/W boson excitations and dares't I suggest substructure! Then no need for higgs mechanism but a whole host of extra issues!

  10. #10
    Quote Originally Posted by Jens View Post
    Probably it's not fair to use the phrase "prove it doesn't exist." Rather, it would be, "shows that it is almost certain that it doesn't exist." Because it's always finding that something is 99.999% certain, which always leave the chance that ran across the one in a million chance that you just happened not to find it.
    Ok. So, how do they know when they are 99.999% certain? Does the math suggest the probability of a higgs appearing? How large of a sample size do they need?

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    Yup - decays are probabilistic. After a certain point you can assign a certainty to your results quite well. It is just stats. But I am no good at stats...

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    Quote Originally Posted by WayneFrancis View Post
    WHAT? Can you point out to me where a particle accelerator was used to create bullet proof vests?!
    Yeah. Argonne Laboratories. Only the information I was given was in an oral presentation there. Now they didn't invent the bullet proof vest, they just made them better. The same thing with steel bridges. They can peer into steel structures to see how steel fractures internally and then place different alloys under similar live stress tests and find out how to make more sturdy bridge structures and to predict the life time of a bridge structure.

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    Quote Originally Posted by blueshift View Post
    Yeah. Argonne Laboratories. Only the information I was given was in an oral presentation there. Now they didn't invent the bullet proof vest, they just made them better. The same thing with steel bridges. They can peer into steel structures to see how steel fractures internally and then place different alloys under similar live stress tests and find out how to make more sturdy bridge structures and to predict the life time of a bridge structure.
    Ok it was used in advancement of material sciences which produces science that is applied to design and manufacturing of bullet proof vests.

    The primary science of accelerators is high energy particle physics which then can be utilised by industry to make better products. Its a bit misleading in my opinion to suggest that these specific end products are the primary factor in the tests being designed.

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    Quote Originally Posted by WayneFrancis View Post
    Ok it was used in advancement of material sciences which produces science that is applied to design and manufacturing of bullet proof vests.

    The primary science of accelerators is high energy particle physics which then can be utilised by industry to make better products. Its a bit misleading in my opinion to suggest that these specific end products are the primary factor in the tests being designed.
    One could get that impression from that isolated part of the post I placed up. However, the OP and one of the questions he or she is asking comes close to " What happens if all the money we spent looking for something comes up empty?" I was just briefly telling him or her that we don't come up empty. The majority of that post dealt with their other questions.

    And I should address the other questions. Neutrinos will not be detected at the LHC. They are being detected beneath the earth deep enough to where other relativistic particles cannot interfere. They rarely interact with anything and can go through light years of lead without hitting any fermions or hadrons. So how does one detect them?

    Neutrinos can combine with a neutron in an atomic nucleus, turning it into a proton and an electron. A nucleus of chlorine can absorb an electron neutrino, turning it into a radioactive form of argon, something that can be detected with a Geiger counter. Ray Davis conducted such an experiment in a 100,000 gallon tank of dry cleaning fluid to detect a single radioactive argon nucleus. Masatochi Koshiba did a similar experiment. Experiments in Canada showed that two types of reaction can occur when electron neutrinos travel through heavy water, water with atoms of deuterium instead of neutron-free hydrogen. One reaction has a very energetic electron forming which travels through the water with a speed higher than the local speed of light in water, producing Cerenkov light. Electron neutrinos produce that reaction. The second reaction produces all three flavors of neutrinos-electron, muon and tau. These flavors are combinations of more fundamental neutrinos- type 1, type 2 and type 3. Anyway, I would look up the Sudbury Neutrino Observatory (SNO). They should be at www.sno.phy.queensu.ca/ last time I checked. There is one in Japan as well. I think it is called Kamiokande or something spelled near that.

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    Quote Originally Posted by tgoolsby2 View Post
    Why is it that people say the LHC will either find the higgs particle or prove that the higgs particle doesn't exist? If it does find the higgs particle, then one could say that it exists. But, if it doesn't find the higgs, it means that the higgs particle doesn't exist. It's like a fortune telling trick.

    How come no one said these thing about the other particle accelerators? And how long does the machine have to run before we declare that the LHC hasn't found the higgs particle? Right now people say the LHC hasn't found it because the probability quarks smashing into each other is very low, such an event is rare.

    Also, if the LHC finds the higgs, then would their be any reasons to keep making bigger particle accelerators?

    Additional questions: How do the detectors work? Are they looking for disruptions in the magnetic field? But then how do they detect neutrally charged particles like neutrinos? And how would they detect a Higgs particle?
    It is thought that at the energy level capability of the LHC, that based upon the present theory concerning how a Higg's particle would be configured concerning its possible energy level/ production ranges, that it should eventually be found from a thorough analysis of LHC collision data. If not found, there could be at least two possibilities, one that it doesn't exist, or two that it has different characteristics that still render it undetectable. A third possibility would be that they first would claim a possible detection of it but later it would turn out to be false. The last possibility would be that they make a clear claim of its detection, then the scrutiny of that data plus its replication would take some time for a final conclusion.

    As you suggest there could never be a total disproof of its theoretical existence, only that the possibility of it absent its discovery, will slowly wane during the operational life of the LHC with no present plans for anything bigger. If they don't find the Higg's it will probably fade into obscurity like all theories that fall out of favor, and other theories making different predictions will take its place.
    Last edited by forrest noble; 2011-Feb-20 at 05:32 PM.

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    May I recommend "Massive. The Hunt for the god Particle" by Ian Sample?
    This new(ish - pub 2010) book is very readable. It starts with Peter Higgs and goes through interviews and visits to the many scientists and accelerators that have played a part in the development of the Standard Model of particle physics. The last chapter explains rather well just what the LHC may see and how that will, or won't be evidence for the Higgs boson.
    I won't try to precis it, just to mention the excitement at Fermilab in 2006 when more than ten lepton signals showed up at 160GeV. Ten days and twenty computers in parallel were needed to check it. It was there, so they re-ran the experiment and six months later, there were no such signals. That incident was marked by unmeant prior publicity, blogging rather than proper papers. Now, any such "Higgs Discovered!" paper will not appear until after experiment and re-experiment, much time and careful work. However much the scientists want it, and of course want the kudos of publishing first, I think they will be very careful with this one.

    Watson and Crick were arrivist, dilletante investigators to many, especially the King's group, and they went off at half-cock with wrong solutions several times before they hit the DNA jackpot. But it didn't matter to the general public then, as their research was done with bits of cardboard, and what did the Man in the Street know about genetics? Now, when the research costs billions and He feels that his Taxes have paid for it (and they have) it behoves the scientist to be a bit more careful with crying "Eureka!"

    John

  17. #17
    We have Probably observed a new boson with a mass of 125.3 ± 0.6 GeV at 4.9 sigma significance” in LHC. Did that mean it was Higgs particle? Or simple Higgs humor? could it c be one of the missing super symmetric particle. The last missing ingredient of the Standard Model of Big Bang theory in particle Physics is the zero mass particles and the particle that gave mass to that zero mass particle”.

    Author
    *Professor Pranab Kumar Bhattacharya MD(cal), FIC Path(Ind), Professor and Head, Dept. of Pathology , convener &In-charge DCP Course WBUHS and DLT course ; **
    *Dept of Pathology, School of Tropical Medicine Kolkata, 108, C.R avenue Kolcutta-73, W.B , India** 7/51 Purbapalli; Sodepur; 24 Parganas(north) Kolkata-110 W.B, India

    The Basic things in the LHC-2011 experiments and its data analysis in the months of April and June 2012 was to find out Higgs particle or the particle that actually gave mass to this whole universe in the Tera Volt temperature(Tev) & provide mass to what ever matter we see around us including probably the Dark energy and Dark matter. In our real Universe, baryonic matter has only about 5% of its total mass, with most of the rest being either in the dark matter or and in the dark energy(2). However, the favorite candidates for dark matter do not get their masses from the Higgs mechanism, and the nature of dark energy is even more obscure today, though they also unlikely to get mass from the Higgs mechanism according me. The inflation-making field in the early Universe likewise likely does not get its mass from the Higgs mechanism also according to me.
    The Standard “Big Bang” Model successfully could describe all of the elementary particles in the particle physics, we know to exist in mathematically at least and how they interact with one another. But our understanding of Nature and its governing laws of this universe yet remained incomplete to me/ and to many highly intelligent physicists and mathematicians. In particular, the Standard Model could never answer me or my brother Rupak Bhattacharya(2) one most basic question : “Why do most of these elementary particles have masses?” and “where from mass actually came?” Without mass, our universe would be a very different place than this one we think . For example, let me consider a very much hypothetical situation, that if the electron or proton had no mass at all, then there would be no formation of atoms at all. Hence there would be no formation of ordinary matter( we call ordinary matter hadrons) as we know it, there would be no chemistry, no biology, no people, no trees, no animals, no flowers, no biological substances even no unicellular organism amoeba or virus in this planet The Earth. There would be no planets at all. No sun, No Stars No galaxies. In addition, look at our Sun shines in the blue sky. My Thanks to a delicate interplay among the fundamental forces of Nature, which would be completely upset, if some of those force particles did not have large masses? At first sight the concept of mass seems not to fit into the Standard Model of particle physics. Two of the forces the model was then described – The electromagnetism and the weak nuclear force – and they can be described by a single theory, that of the electroweak force. Scientists have subjected the electroweak theory to many experimental tests, which it has passed with flying colours. However, According to me, the basic equations of that theory seem to require that all elementary particles must be mass less. Scientists needed a way out of this conundrum. Several Important Physicists, including Professor Peter Higgs Emeritus Professor of Theoretical Physics at Edinburgh University, discovered then a mechanism that, if added to the equations, would allow particles to have masses. This is today known as the `“Higgs mechanism”. What actually is then Higgs mechanism? According to Professor W. Peter Higgs who predicted his theory in 1964, Published in the science journal of AAAS and in Nature as to the origin of mass, he predicted the “Higgs particles” makes it by having a non-zero lowest-energy field value. So every particle that interacts with it, continually experiences its presence, and that drags those particles and gives those particles their masses. And to give the mass a particle must have some kind of spin and oscillation movement. Without the Higgs particle, every other Standard-Model particle would be mass less. Rupak (2)- my youngest brother Told me Such in 1993- I do remember.
    The Higgs non - zero-field lowest-energy state can be thus explained with an analogy example of a marble in a bowl. In a "normal" one, the marble must settle down in the center, and if you like to push it, it will oscillate back and forth but around the center. But in a bowl with a hump in the center, like a juice-squeezer bowl, the marble will settle down in the trough around the central hump, at a non- zero distance from the center. It will then only oscillate inward and outward, but move at constant speed in the trough. That trough-motion mode is called a "Goldstone mode", and in elementary particles, it would show up as a mass less mode. Peter Higgs and others discovered that such mass less modes could disappear into “photon like fields” that were made massive from symmetry breaking, thus avoiding excess mass less particles which is now has to be seen in Large Hadron Collider(LHC). One must also Remember that the LHC is still now running at about half of its power right now. As to the mass of baryonic matter, what we know? The mass that we observe in the world around us and in ourselves, about 98% of it is due to a side effects of an effect called color confinement in quarks particles. From their mutual interactions, “quarks' and gluons' interactions with each other become very strong at distances much above 10(-15) m, the size of a nucleon (proton or neutron). So they can't get much further apart from each other than about that distance. That's what gives nucleon the ‘size’. Since gluons are also considered once as mass less and up and down quarks are not much more massive than an electron, most of ‘quarks' and ‘gluons' energy in nucleons is then kinetic and interaction energy. Thus, by E = mc2, most of the ‘mass’ of ‘nucleons’ should come from that energy. What I want to mean here, about 98% of nucleons' masses’ is due to color-confinement-induced quark and gluon kinetic and interaction energy, 1% due to electromagnetic effects, and 1% due to quark (rest) masses. The electron's mass is 0.05% that of a nucleon. Nuclear binding energies are typically a little less than 1% of a nucleon mass, electron binding energies in atoms much less, and molecular binding energies even less. Then where from rest of mass? Where from the electrons, quarks got their masses also? Electrons, up quarks, and down quarks all had their masses by the above stated ‘Higgs mechanism’, and their mass values are important in determining the structure of the baryonic parts of our Universe. In our Universe, as I told earlier baryonic matter has only about 5% of its total mass, with most of the rest being dark matter and dark energy. The favorite candidates for dark matter do not get their masses from the Higgs mechanism, and the nature of Dark energy is even today more obscure though, it is also unlikely to get mass from the Higgs mechanism. The inflation-making field in the early Universe likewise likely does not get its mass from the Higgs mechanism(2). Integrating it into the Standard Model, allowed scientists to make predictions of various quantities, including the mass of the heaviest known particle, in the quantum physics” the top quark”. Experimentalists found this particle just where equations using the Higgs mechanism predicted it should be. According to theory, the Higgs mechanism works as a medium that exists every where in space time. Particles according him gain mass by interacting with this medium. Prof.Peter Higgs pointed out in the year 1964, that the Higgs mechanism required the existence of an yet unseen particle, which we now and call the Higgs Particles . So the Higgs particle became the fundamental component of the Higgs medium, much as the photon is the fundamental component of light. Every particle is either a boson or a fermion. Higgs effect is the fundamental mechanism for fermionic mass generation. The important thing is having some mechanism that generates mass in the first place. All known particles spin like a small top spin, with the known bosons that carry the fundamental interactions – such as the photon, the quantum of light that carries the electromagnetic force – spinning at twice the rate of the fermion particles that make up matter particles such as electrons and quarks. The Higgs particle is the only particle predicted by the Standard Model that has not yet been seen by the experiments. The Higgs mechanism does not predict the mass of the Higgs particle itself but rather a range of masses. What I mean there may be many kinds of Higgs particles with different masses. Fortunately, the Higgs particles leave brhind a unique particle footprint depending on its mass in a particle collider. So scientists know what to look for and would be able to calculate its mass from the particles they saw in the LHC detector. And Higgs Particles do not spin. A Zero mass particle (2) must not spin also. different kinds of Higgs & Bosons. If any of these scenarios turn out to be true, finding the Higgs boson could be a gateway to discovering new physics, such as super-particles Experimentalists might find that the Higgs Particle is different from the simplest version the Standard Model predicts. Many theories that describe physics beyond the Standard Model, such as super -symmetry and composite models, suggest the existence of a zoo of new particles, including or dark matter. On the other hand, finding no Higgs particle at the LHC would give credence to another class of theories that explain the Higgs mechanism in different ways--- continued

  18. #18
    Super Proton Synchrotron (SPS) accelerator which started taking data in 1981,When the SPS first operated as a proton–antiproton collider. At the time, one of the hottest challenges in particle physics was the search for the force-carrier particles predicted by electroweak theory. Named the W and Z bosons, these were heavy particles. So finding them required an accelerator that could reach an unprecedented level of energy. The discovery was so important that the two key scientists behind the discovery received the Nobel Prize in Physics only a year later. The Nobel prize went to Carlo Rubbia, instigator of the accelerator’s conversion and spokesperson of the UA1 experiment, and to Simon van der Meer, whose technology was vital to the collider’s operation. This was a significant achievement in physics that further validated the electroweak theory. It also helped to secure the decision to build CERN’s next big accelerator, the Large Electron Positron collider(LEP), whose job was to mass-produce Z and W bosons for further studies. In the 1960s three physicists, Steven Weinberg, late Abdus Salam of Pakistan and Sheldon Glashow, proposed a theory. What did they believe then that two of the four basic fundamental forces of the universe – the electromagnetic force and the weak nuclear force – were in fact different facets of the same force. Under high-energy level conditions (such as in a particle accelerator), the two will then merge into the electroweak force. No scientific theory can finally become established without a solid grounding of experimental proof which is usually done much & much later. The first evidence in support of the three scientists theory emerged when the Gargamelle detector at CERN of Geneva found the neutral current, an essential ingredient to the electroweak theory. Further observations followed to secure the above three theorists a Nobel Prize in 1979 almost 19 years later they proposed their theory. However, there were still three hypothetical force-carrier particles described by that theory that no one had managed to find. The W+, W- and the Z0 bosons remained tantalisingly out of reach until an accelerator could be built with much high enough energy to carry out their search – a problem that was solved by the conversion of the SPS accelerator to LHC. So Large Hadron Collider came into existence. Two 4 TeV Proton beams were brought into collision at the LHC’s four interaction points. This signals the start of physics data taking by the LHC experiments for 2012. The experience of two good years of running at 3.5 TeV per beam gave CERN Scientists the confidence to increase the energy further for this year2012 without any significant risk to the LHC machineitself(1),” Although the increase in collision energy is relatively modest, it translates to an increased discovery potential that can be several times higher for certain hypothetical particles. Some such particles, for example those predicted by super-symmetry, would be produced much more copiously at the higher energy. Super-symmetry is a theory in the particle physics that goes beyond the current Standard Model, and could account for the dark matter of the Universe. Standard Model Higgs particles, if they exist, will also be produced more copiously at 8 TeV than at 7 TeV, but background processes that mimic the Higgs signal will also increase. That means that the full year’s running will still be necessary to convert the tantalising hints seen in 2011 into a discovery, or to rule out the Standard Model Higgs particle altogether. In LHC Initially at 3.5 Tev per beam(when the quench happened) and now at 4 Tev per beam. It's not until the 'long slumber' that it will get the upgrades (rebuild going into 2014-2015) to get up to 7 Tev per beam. The LHC is now scheduled to run until the end of 2012, when it will go into its first long shutdown in preparation for running at an energy of 6.5 TeV per beam as of late 2014, with the ultimate goal of ramping up to the full design energy of 7 TeV. The ATLAS and CMS of LHC in CERN experiments delivered their preliminary results of their 2012 data analysis on 18 June after a very successful first period of LHC running in 2012 i.e the search for the Higgs particle,”. What did CERN physicists told on 4th July 2012? They Said “we have observed a new boson with a mass of 125.3 ± 0.6 GeV at 4.9 sigma significance” Did it meant it was Higgs particle? O r Higgs humor? For approx 10 million readers from different Medias and so?. To establish it as Higgs particle the main thing to look at is spin. It needs to be spin-0 and must not decay to be the Higgs. Checking of the decay routes seen goes against Higgs theory. Since the newly discovered particle decays into pairs of known bosons, it is certainly also a boson. we also see that it does not spin the same way as a photon. If it were a Higgs particle, it would not spin at all and it would be the first elementary scalar boson ever seen Well, one of the options is that if it is not the Higgs particles they could it could be one of the missing super symmetric Particles? There is also a chance it could be a mixed neutralino or slepton, also in the range between 100-150 GeV. In fact they all remain missing, where "all" refers to a number that may be as low as zero. if Higgs can only explain about just the 4% the matter we know about the Universe, which doesn't include dark matter and dark energy, why do physicists call it fundamental to the whole universe ( matter +dark matter+dark energy)? The Higgs mechanism provides a fundamental way to generate the mass for massive vector bosons
    2) The Higgs mechanism is critical to explaining how electroweak unification works
    3) Similar to the strong force (the strong force holds colour charged quarks together but a second order effect known as the residual strong force holds non-colour-charged nucleaons together too) it is perfectly possible that a 'residual' there should exist in nature a boson of zero charge, zero spin, and zero mass. No such particle was known. If it existed and interacted with other matter as it was expected to do, it could hardly have escaped detection it is perfectly possible that a In the further future there is some excitement building for the idea of a Higgs factory, a muon-muon collider. There are considerable technical challenges to do with this, however
    SM Higgs production cross sections at √s = 7 TeV (2012 update)

    Higgs Mass range
    step size
    # of points
    addendum
    [ 90,110] GeV
    5 GeV
    5 points

    [110,140] GeV
    0.5 GeV
    60 points

    [140,160] GeV
    1 GeV
    20 points

    [160,290] GeV
    2 GeV
    65 points
    + 165, 175, 185, 195 GeV (4 points)
    [290,350] GeV
    5 GeV
    12 points

    [350,400] GeV
    10 GeV
    5 points

    [400,1000] GeV
    20 GeV
    30 points
    + 450, 550, 650, 750, 850, 950 GeV (6 points).
    So the last missing ingredient of the Standard Model of Big Bang theory in particle Physics is the zero mass particles and the particle that gave mass to the zero mass. The Standard Model gives an extraordinarily precise picture of the matter that makes up all the visible universe, and the forces that govern its behavior, but there are good reasons to believe that this is not the end of the story. The Final of the Theory there must exist in nature a particle of zero charge, zero spin, and zero mass. No such particle is known yet.. If it existed and interacted with other matter as it was expected to do, it could hardly have escaped detection Higgs is a boson with no charge and no spin, but its mass could be as much as hundreds of GeV.
    References
    1] ChiaraMariotti and ReiTanaka - 24-Dec-2010LHCPhysics Web
    2} Rupak Bhattacharya of 7/51 Purbapalli PO= Sodepur Dist 24 Parganas(north) Kolkata-110 West Bengal, India
    3] Observation of a New Particle with a Mass of 125 GeV2012-07-04, by Lucas Taylor http://cms.web.cern.ch/tags/higgs-boson

    4] CMS search for the Standard Model Higgs Boson in LHC data from 2010 and 2011
    http://cms.web.cern.ch/comment/179
    5]About the Higgs Boson http://cms.web.cern.ch/news/about-higgs-boson

  19. #19
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    I can recommend a little tool we writers use called the "paragraph".

  20. #20
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    Pranab first of all, this is totally unreadable.
    Use smaller paragraphs, delete the nonsense sentences like: "there would be no chemistry, no biology, no people, no trees, no animals, no flowers, no biological substances even no unicellular organism amoeba or virus in this planet The Earth." that don"t add a thing to the argument you apparently try to bring to us.
    Statements like "I think my brother told me in 1993" do not belong in such a post.
    I feel unable to read that wall of text, however, I think you are arguing that the Higgs is not discovered. If that is the case, then take it to ATM.
    Please do not pursue this any further here, and do not dump your blog postings in CQ!
    All comments made in red are moderator comments. Please, read the rules of the forum here and read the additional rules for ATM, and for conspiracy theories. If you think a post is inappropriate, don't comment on it in thread but report it using the /!\ button in the lower left corner of each message. But most of all, have fun!

    Bi-weekly space physics research "blog" at tusenfem.blogspot.co.at

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