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Natural Science Forum / Physics / Particle Physics / May 2005Decaytimes of Leptons
I just want to ask if the Standard - Model of Leptons has a theory for the decay times of the Myon and the Tau. What Environment Parameters (Bonding in an Atom, Temperature etc. ) influence the decay ? If standard Theory says nothing: Are there any empirical models or relationships ? I think this is a very important question and would like to collect experience in this field. Thanks Josef | I just want to ask if the Standard - Model of Leptons has a theory for the | decay times of the Myon and the Tau. [quoted text clipped - 6 lines] | I think this is a very important question and would like to collect | experience in this field. Of course there is a theory. See Griffiths' "Introduction to Elementary Particles". Or http://pdg.lbl.gov/ One of the toughest decay times to theorize is the decay of a free neutron. I believe the free muon decay theory is fairly simple. And matches experimental evidence accurately. FrediFizzx Thats only measured values. I look for formulas. > | I just want to ask if the Standard - Model of Leptons has a theory for > the [quoted text clipped - 14 lines] > > FrediFizzx | > | I just want to ask if the Standard - Model of Leptons has a theory for | > the [quoted text clipped - 12 lines] | > theorize is the decay of a free neutron. I believe the free muon decay | > theory is fairly simple. And matches experimental evidence accurately. | Thats only measured values. I look for formulas. Please don't top post. Huh? The formula is in Griffiths' book. Or any decent particle physics textbook. FrediFizzx > I just want to ask if the Standard - Model of Leptons has a theory for the > decay times of the Myon and the Tau. The SM *is* the theory you ask for, and yes, it provides a way to calculate the decay amplitude for the heavy leptons. The leading-order scattering amplitude \mu -> something will give you quite precise numbers. > What Environment Parameters (Bonding in an Atom, Temperature etc. ) > influence the decay ? Everything you can take in account will probably alter the result in some way, although muons are usually produced as quasi-free particles. > I just want to ask if the Standard - Model of Leptons has a theory for the > decay times of the Myon and the Tau. The SM *is* the theory you ask for, and yes, it provides a way to calculate the decay amplitude for the heavy leptons. The leading-order scattering amplitude \mu -> something will give you quite precise numbers. > What Environment Parameters (Bonding in an Atom, Temperature etc. ) > influence the decay ? Everything you can take in account will probably alter the result in some way, although muons are usually produced as quasi-free particles. What exactly is a lepton? Chris. > What exactly is a lepton? > > Chris. If it had a yellow label then it is a tea brand. :-) EL | > What exactly is a lepton? Fermions that aren't quarks. | > Chris. | [quoted text clipped - 3 lines] | | EL Welcome back EL. That's an e not an i. ;-) Got your email message about the other group. Will check it out soon. Just got back from vacation and am trying to catch up. Did you ever get your website back up yet? FrediFizzx http://www.vacuum-physics.com/QVC/quantum_vacuum_charge.pdf or postscript http://www.vacuum-physics.com/QVC/quantum_vacuum_charge.ps Is a Quark a Snark in disguise? Chris. > | > What exactly is a lepton? > [quoted text clipped - 18 lines] > or postscript > http://www.vacuum-physics.com/QVC/quantum_vacuum_charge.ps [Chris wrote] > Is a Quark a Snark in disguise? > > Chris. [EL] No, Ducks Quark I Snark after dark. I also drink Leptons and live in Mesons. No Baryons can stop me even when my luck is Hadron. Say Quark Quark and you have a twin pair O' ducks. The Lepton tea company have some sub-brands: The electron tea is delicious. The muon tea is the speciality for girls during making love. The tauon tea is branded for tea-breaks and time-out. Finally, the neutrinos are sachets of ugly tea-dust that I do not recommend sipping before going to bed. On the other hand, ducks are very active and they might quark up or down in a strange way from their bottom but when they are on top of my dinner table I feel charmed. :-) Hahahaha EL > | > What exactly is a lepton? > > Fermions that aren't quarks. [EL] Damn, WHY did you tell him! :-) > | > Chris. > | [quoted text clipped - 5 lines] > > Welcome back EL. That's an e not an i. ;-) [EL] Really! ;-) > Got your email message about the other group. [EL] We certainly need you there, I am out of my full cups. > Will check it out soon. [EL] Please do. > Just got back from vacation and am trying to catch up. > Did you ever get your website back > up yet? [EL] Yes and NO. I uploaded 7 chapters at: http://www.miwa1.com/hemetis/Intro.htm While the 8th is under construction. As for TKTODO, not yet, because I have a lot to reconsider after ten years, don't you think so? ;-) I also buried "Quantology" and coined K&K as a replacement. :-) Kindest regards. EL > FrediFizzx > > http://www.vacuum-physics.com/QVC/quantum_vacuum_charge.pdf > or postscript > http://www.vacuum-physics.com/QVC/quantum_vacuum_charge.ps |
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