Table 33.2 Selected Particle Characteristics Rest mass Lifetime (5) Particle Category Symbol Antiparticle (MeV/e?) Le Lu LT name Gauge Photon Self Stable 80.39x10 91.19x10 w+ 1.6х 10-25 Bosons z° Self 1.32x10-25 Electron et 0.511 Stable Neutrino (e) 0(7.0eV) 16] Ve Ve ±1 Stable Muon 105.7 ±1 2.20x10-6 Leptons Neutrino (H) O( < 0.27) 10 ±1 Stable 1777 2.91x10-13 Tau Neutrino (7) O( < 31) Vr ±1 Stable Hadrons (selected) 139.6 2.60 x 10 - Pion Self 135.0 8.4 x 10 -17 к+ к" ±1 124 x 10 -3 Mesons 493.7 Kaon 497.6 0.90 x 10 -10 Eta Self 547.9 2.53 x 10 -19 (many other mesons known) Proton 938.3 +1 Stable Neutron 939.6 +1 882 Lambda ло ло 王1 1115.7 +1 2.63 x 10 -10 Σ Σ- 1189.4 21 王1 0.80 x 10 -10 Baryons Sigma Σ0 호이 1192.6 21 王1 7.4 x 10 -20 Σ 1197.4 +1 王1 148 x 10 -10 1314.9 +1 72 2.90 x 10 -10 Xi 1321.7 :1 王2 1.64 x 10 -10 Omega 1672.5 :1 10 王3 -10 0.82 x 10 Table 33.4 Quark Composition of Selected Hadrons1) Particle Quark Composition Mesons иd üd då mixturel12) ,0 ий, dd mixture13) EP ds к* и5 к" йs Jlw cč bѣ Baryons14157 инd udd 4° udd иud A- ddd A++ 10 uds ΣΟ uds Σ. ΣΤ dds dss

Table 33.2 Selected Particle Characteristics Rest mass Lifetime (5) Particle Category Symbol Antiparticle (MeV/e?) Le Lu LT name Gauge Photon Self Stable 80.39x10 91.19x10 w+ 1.6х 10-25 Bosons z° Self 1.32x10-25 Electron et 0.511 Stable Neutrino (e) 0(7.0eV) 16] Ve Ve ±1 Stable Muon 105.7 ±1 2.20x10-6 Leptons Neutrino (H) O( < 0.27) 10 ±1 Stable 1777 2.91x10-13 Tau Neutrino (7) O( < 31) Vr ±1 Stable Hadrons (selected) 139.6 2.60 x 10 - Pion Self 135.0 8.4 x 10 -17 к+ к" ±1 124 x 10 -3 Mesons 493.7 Kaon 497.6 0.90 x 10 -10 Eta Self 547.9 2.53 x 10 -19 (many other mesons known) Proton 938.3 +1 Stable Neutron 939.6 +1 882 Lambda ло ло 王1 1115.7 +1 2.63 x 10 -10 Σ Σ- 1189.4 21 王1 0.80 x 10 -10 Baryons Sigma Σ0 호이 1192.6 21 王1 7.4 x 10 -20 Σ 1197.4 +1 王1 148 x 10 -10 1314.9 +1 72 2.90 x 10 -10 Xi 1321.7 :1 王2 1.64 x 10 -10 Omega 1672.5 :1 10 王3 -10 0.82 x 10 Table 33.4 Quark Composition of Selected Hadrons1) Particle Quark Composition Mesons иd üd då mixturel12) ,0 ий, dd mixture13) EP ds к* и5 к" йs Jlw cč bѣ Baryons14157 инd udd 4° udd иud A- ddd A++ 10 uds ΣΟ uds Σ. ΣΤ dds dss

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter31: Particle Physics

Section: Chapter Questions

Problem 18P

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Similar questions

(a) Estimate the mass of the luminous matter in the known universe, given there are 1011 galaxies, each containing 1011 stars of average mass 1.5 times that of our Sun. (b) How many protons (the most abundant nuclide) are there in this mates? (c) Estimate the total number of particles in the observable universe by multiplying the answer to (b) by two, since there is an electron for each proton, and then by 109, since there are far more particles (such as photons and neutrinos) in space than in luminous matter.
Integrated Concepts Suppose you are designing a proton decay experiment and you can detect 50 percent of the proton decays in a tank of water. (a) How many kilograms of water would you need to see one decay per month, assuming a lifetime of 1031 y? (b) How many cubic meters of water is this? (c) If the actual lifetime is 1033 y, how long would you have to wait on an average to see a single proton decay?
Integrated Concepts The primary decay mode for the negative pion is (a) What is the energy release in MeV in this decay? (b) Using conservation of momentum, how much energy does each of the decay products receive, given the is at rest when it decays? You may assume the muon antineutrino is massless and has momentum just like a photon.
(a) What particle has the quark composition u-u-d? (b) What should its decay made be?
The peak intensity of the CMBR occurs at a wavelength of 1.1 mm. (a) What is the energy in eV at a 1.1mm photon? (b) There are approximately 109 photons for each massive particle in deep space. Calculate the energy of 109 such photons. (c) If the average massive particle in space has a mass half that of a proton, what energy would be created by convening its mass to enemy? (d) Does this imply that space is “matter dominated”? Explain briefly.
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The total energy in the beam of an accelerator is far greater than the energy of the individual beam particles. Why isn't this total energy available to create a single extremely massive particle?
The 3.20kmlong SLAC produces a beam of 50.0GeV electrons. If there are 15,000 accelerating tubes, what average un?age must be across the gaps between them to achieve this energy?
The primary decay mode for the negative pion is What is the energy release in MeV in this decay?
Suppose you are designing a proton decay experiment and you can detect 50 percent of the proton decays in a tank of water. (a) How many kilograms of water would you need to see one decay per month, assuming a lifetime of 1031 y? (b) How many cubic meters of water is this? (c) If the actual lifetime is 1033 y, how long would you have to wait on an average to see a single proton decay?