What have we learned about sub particles?
113847
These particles include atomic constituents such as electrons, protons, and neutrons (protons and neutrons are actually composite particles, made up of quarks), as well as other particles such as photons and neutrinos which are produced copiously in the sun. However, most of the particles that have been discovered and studied are not encountered under normal earth conditions; they are produced in cosmic rays and during scattering processes in particle accelerators.
179527
No, neither. When matter and anti-matter get together you get a lot of gamma rays, and assorted other known particles. This has been observed many times in the larger particle accelerators. Nobody knows what dark matter or dark energy are made of, but we do know they aren't made of the things we've detected in our accelerators yet.
873990
I am slightly hazy on the quantum details of this not yet observed particle.\n\nTo break down 'what is a higgs boson' we have to ask what is a boson.\n\nWell, bosons are exchange particles and are involved in the weak force,electromagnetism,strong force and mass \n \nThe W and Z vector bosons are heavy particles and it is the wieght of these particles that gives the weak force its very short interaction range.\nBosons are significantly different to quarks and leptons because they have interger spin while leptons and quarks (fermions) have half interger spin and this explains why quarks have fractional charges and why bosons are force carriers.\n\nPhotons are bosons and carry the 'electromagnetic force'.\nThey have spin of 1 like the bosons mentioned above but they have 0 mass\n\nGluons are particles that are involved in the strong force and it is the gluons that carry the colour charge and keep the quarks in confinement.\nThe gluon has a spin of 1 and is almost massless. (please look at spontaneous symmetry breaking).\n\nSo you know what a boson is..\n\nWhat is a higgs boson and what is it that makes it significant?\n\nWe have to ask why does the W and Z boson in the weak interaction has a large mass/ spin1 while the other gauge bosons have o mass and spin1?\nFor example during the planck epoch all of the four forces mentioned earlier were once unified into one force but were seperated once the temperature cooled (spontaneous symmetry breaking). \nThe higgs boson and field must exist to aswer why photons have 0 mass and W and Z bosons have mass.\nTo explain this and why the two bosons are different we have to come to the conlcusion that at some point one of the bosons interacted with a particle that gave the W and Z boson its mass.\nThis is an example of the electroweak field and the seperation of the weak and electromagnetism\n\nThe higgs particle is said to have a higgs field that gives other particles its mass by interaction, but it doesn't end there.\nThe higgs field has a non-zero value in empty space which means in space the lowest energy is the higgs field and that the higgs particle has zero energy.\nParticles would therefore get their mass by interacting with zero energy higgs field in empty space via the higgs mechanism.\nOn a fundamnetal scale I cannot explain because it cannot be explained yet and only by mathematics. \n\nIf you are unsure of bosons or even quarks, you do really have to understand particle physics before you try and understand Higgs particles.\nTo undertstand one part you have to understand the whole picture, and using this method will help you link the whole of physics into one beautiful picture with the exception of a few un painted areas.\n\n I hope this helps\n\nFor me studying physics is a continous affair which luckily prevents science from becoming boring.
170874
Most physicists (like Feynman) will tell you it's definitely a particle.  I think they're full of crap, and it's a wave.  The fact that it can only be absorbed and emited in discrete packets doesn't necessarily mean that it really travels as a particle, and the notion of a particle flies in the face of the double-slit one-photon experiment.
320110
Neutron, proton, and electron... though there are other sub-atomic particles making up these basic three.
743062
try here:http://rds.yahoo.com/_ylt=A0geuuzuP1dFB2IBeMRXNyoA;_ylu=X3oDMTE2ZGhvZmh2BGNvbG8DZQRsA1dTMQRwb3MDMQRzZWMDc3IEdnRpZANERlg1XzMw/SIG=1bt3hf273/EXP=1163432302/**http%3a//rdre1.yahoo.com/click%3fu=http%3a//particleadventure.org/particleadventure/frameless/chart.html%26y=04CFC1D3DDD1DC47D5%26i=680%26c=9107%26q=02%255ESSHPM%255BL7o%7emkv%257Csz%253Frp%257Bzs%253F%257Bv%7exm%7erl6%26e=utf-8%26r=0%26d=wow%7eDFX5-en-us%26n=VA74G7I451BKA734%26s=11%26t=%26m=45573FEF%26o=0159C8E03B780E166C%26x=05AD451CF8B3C559781873C67B786DCD32\nhttp://rds.yahoo.com/_ylt=A0geuuzuP1dFB2IBicRXNyoA;_ylu=X3oDMTE2ZjFtMzg2BGNvbG8DZQRsA1dTMQRwb3MDNARzZWMDc3IEdnRpZANERlg1XzMw/SIG=12qg3t3lt/EXP=1163432302/**http%3a//teachers.web.cern.ch/teachers/archiv/HST2002/feynman/index.html\nhttp://rds.yahoo.com/_ylt=A0geuuzuP1dFB2IBlcRXNyoA;_ylu=X3oDMTE2anNnbmViBGNvbG8DZQRsA1dTMQRwb3MDNgRzZWMDc3IEdnRpZANERlg1XzMw/SIG=12t8folf5/EXP=1163432302/**http%3a//www.jburroughs.org/science/mschober/freeparticle/forcediagrams.htm\nhttp://rds.yahoo.com/_ylt=A0geuuzuP1dFB2IBrcRXNyoA;_ylu=X3oDMTE3am02cWRoBGNvbG8DZQRsA1dTMQRwb3MDMTAEc2VjA3NyBHZ0aWQDREZYNV8zMA--/SIG=1cam86e80/EXP=1163432302/**http%3a//rdre1.yahoo.com/click%3fu=http%3a//www.osti.gov/energycitations/product.biblio.jsp%253Fosti_id%253D20571252%26y=04C399C287E36B223B%26i=680%26c=10411%26q=02%255ESSHPM%255BL7o%7emkv%257Csz%253Frp%257Bzs%253F%257Bv%7exm%7erl6%26e=utf-8%26r=9%26d=wow%7eDFX5-en-us%26n=VA74G7I451BKA734%26s=11%26t=%26m=45573FEF%26o=01963EDDD409DD925F%26x=05F89BC330F0D06C36801525F3512062FB\nhttp://rds.yahoo.com/_ylt=A0geuqdRQFdFjQgAaRZXNyoA;_ylu=X3oDMTE3ZDRjMWRzBGNvbG8DZQRsA1dTMQRwb3MDMTgEc2VjA3NyBHZ0aWQDREZYNV8zMA--/SIG=11n06kv0t/EXP=1163432401/**http%3a//arxiv.org/abs/hep-ph/0510416\nhttp://rds.yahoo.com/_ylt=A0geuqdRQFdFjQgAdBZXNyoA;_ylu=X3oDMTE3cnZjM25nBGNvbG8DZQRsA1dTMQRwb3MDMjAEc2VjA3NyBHZ0aWQDREZYNV8zMA--/SIG=12dtpb9ge/EXP=1163432401/**http%3a//www-sldnt.slac.stanford.edu/alr/standard_model.htm
296566
By using particle collisions, it is possible to show that there is *something* inside of protons, for example. These 'somethings' have the properties that the theorists predict that quarks will have. Furthermore, the theoretical predictions made by the quark models (such as decay rates, reaction cross sections, etc) are in agreement with what is actually seen in the accelerators. This is why we say that quarks exist even though nobody has seen an isolated quark (and there are good theoretical reasons why we may never see one).\n\nOn the other hand, the strings in string theory are *incredibly* small, which means we need very high energies to probe them. No particle accelerator that we have right now will produce these energies. Also, the strings are what would describe the nature of the quarks, not show they don't exist. The question is whether they are point particles or extended to some (small!) degree.
314306
we are human beings made of complex carbon compounds which are made of basic particles molecules which are agin made of electrons and protons and nuetrons which are again made up of quarks..............we are livng in this universe with reason tha twe see the way it is.........its as per the basic anthropic principal............now as far as being existing in terms of pairs let me explain you...\nwe live in universe which is made of particles and antiparticles every particle has a corresponding antiparticle.  A particle and its antiparticle have identical mass and spin..now these both carry various as per earths scientist have designed such as electric charge, color charge, flavor, electron number, muon number, tau number, and baryon number. so if go into deep into this it will be difficult to understand..... so we exists in pairs...so check out man to see whether ur anti of yours.you will be annhilited man.....so better be careful...one another approch is the many world theory which states us that there are many parallel universes around they depend upon the every action do in present i guess.....its also called as catastrophe if you know.....\nso there u go that swhy we r not alone and only one....\nregarding the last two this called as world as our english dictionary given a name to this earth the other name....and if you dnt who you are then you better stop watchin movies like matrix..........and all that crap....hope u understand the answer.........live life bye.......
62030
Protons and neutrons.
80973
They are real particles.  They really exist.  The two types are mesons and baryons.  Mesons are made of one quark and an anti-quark.  Solid matter we touch in every day life is made up of atoms made of protons, neutrons, and electrons.  Protons and neutrons are two kinds of hadrons called baryons, made up from the same particles (quarks) that make up mesons, except protons and neutrons are made up of 3 quarks.  Unlike protons and neutrons, mesons are unstable, so they quickly decay.  But they can be produced and studied in particle colliders, such as the Tevatron at Fermilab, and other big colliders at the Stanford Linear Accelerator Collider (SLAC), and at Cornell.  Have a look at the following websites for more info:\n\nhttp://www2.slac.stanford.edu/vvc/theory/hadrons.html\nhttp://www.fnal.gov\nhttp://www.slac.stanford.edu
1012180
Personally I think the reason that there is less antimatter than matter has something to do with the arrow of time.  The last time I checked there was still not a very good explaination of why there is more matter than antimatter.  Its still an outstanding problem in physics.  Its a subject that, as a physicist, I'm very interested in.  Who knows, maybe you'll come up with an explaination.
1115830
Most micro-subatomic particles (i.e. Quarks, Muons, Leptons etc.) are, for the most part, the same size.  Some are a little larger than others are largly the same.  The smallest thing in existance however, is a string.  A string is not a particle though.
258115
Basic Physics Questions\n\nI am a student, and I have a basic physics question about...\nThis question would be better covered by a physics teacher in your school that you can interact with for better understanding. You might get a science fair project out of it, too.\n\nDr. Louis Barbier and Beth Jacob\n(October 2002)\n\n\nParticle Physics\n\nI am trying to learn some physics on my own, but I find the descriptions of particles either too technical or too vague. I want a description of the structure of a nucleus and how particles are classified. I need a text that's not too hard, but without sacrificing rigor.\nI'm afraid you can't have a text that's not too hard without sacrificing rigor. If you have a background in physics, a standard undergraduate text book that I would recommend is Nuclei and Particles by Emilio Segre.\n\nDr. Louis Barbier\n\n\nSub-divide Electrons?\n\nCan electrons be divided into sub-particles or are they pure energy?\nThere is no evidence that electrons can be sub-divided. They appear to be pure, primary particles. Although matter and energy are in some ways different forms of the same thing, electrons have a rest mass and so are considered matter and not pure energy.\n\nDr. Eric Christian\n(May 2000)
340809
Quantum Physics tries to explain the mIcrocosm…the atomic and subatomic level of the world. Einstein focused more on the mAcrocosm; hence, his theory of relativity. Even though the equations that Einstein came up with work on the mAcrocosm (motion of planets and behavior of light and gravity)…they don’t work on the subatomic level (electrons and quasars and such). And those that work on the subatomic level, can not be applied to the mAcrocosm. BUT, and this is important: you must remember that the microcosm FORMS the macrocosm and the macrocosm can not exist without its microcosm blueprint (sort of like cells together making ‘the body’). You would THINK that the microcosm world would ‘mirror’ the laws of the macrocosm world that it FORMULATES…but apparently they don’t…and there lies the conundrum…and that is why no one so far has been able to come up with ONE equation that can apply to both worlds! For example in this mAcrocosm that you and I readily and directly experience; cause PRECEDES effect…in other words, you hit the glass (cause) and it falls and shatters (effect)…in the subatomic world, that is not the case. In the subatomic world, effect PRECEDES the cause or is simultaneous with it! Also, in this ‘BIG’ world, things don’t happen (come to being) through thought or intention alone…you must exert an effort for them to occur (like building a bridge…you have to physically carry materials and put them together…etc.) In the mIcrocosm, there is something called the ‘observer effect’ which means, depending on the observer’s thoughts / expectations (most cases the scientist observing the experiment) the outcome is determined. For example, if you observe light as a ‘particle’ it acts like a particle. If you observe it as a wave; it acts like a wave, but never both ‘at the same time’. That’s another ‘conundrum’ of quantum physics…is light a wave or a particle since it acts like both. Yes, I know! Quantum physics is a fascinating subject. I urge you read up on it. ‘Other Worlds’ by Paul Davies is a GREAT book to begin with…followed by Brian Greene’s ‘The Elegant Universe’ which is ‘slightly’ harder to follow; but both are worth the read :)
475479
here's my guess --\nthat these particles are somehow "connected" . that they do not violate casuality (this one is proveable) or locality....somehow.
1933
One property of matter is the electric charge. Most sub-atomic particles have either a positive (+) or negative (-) electrical charge. Those that don't are considered neutral. The most common charged particles are the electron and proton. Atoms with an excess of electrons are called negative ions. Those with missing electrons are called positive ions. There is an electrical field that flows between opposite charges, causing an electrical force. This results in an attractive force between the opposite charges and a repelling force between like charges.
231248
The clue is in your question:  "We find."  How do you know what becomes of antiparticles we don't find?