TABLE 44.2 Some Particles and Their Properties Particle Anti- Mass Category Name Symbol particle (MeV/c*) B L. L. L, Lifetime(s) Spin Leptons Electron 0.511 +1 Stable Electron-neutrinot <2 eV/c2 +1 Stable Muon 105.7 +1 2.20 x 10-6 <2 eV/c² 1 777 <2 eV/c? Muon-neutrinot +1 Stable Tau +1 2.9 x 10-13 Tau-neutrinot +1 Stable Hadrons Mesons Pion 139.6 2.60 x 10-8 Self 135.0 8.52 x 10-17s Каon K+ K- 493.7 +1 1.24 x 10-8 Kg Kg 497.7 +1 0.89 x 10-10 497.7 +1 5.1 x 10-8 Вaryons Proton P. 938.3 +1 Stable Neutron n 939.6 +1 881 1 115.7 1 189.4 1 192.6 1 197.4 1 232 1 232 1 232 1 232 1 315 1 322 1 672 Lambda A° +1 -1 2.6 x 10-10 Sigma Σ +1 -1 0.80 x 10-10 +1 -1 7.4 x 10-20 +1 -1 1.5 x 10-10 6 x 10-24 6 x 10-24 6 x 10-24 Delta 4++ +1 A+ +1 +1 +1 6 x 10-24 Xi +1 -2 2.9 x 10-10 +1 -2 1.64 x 10-10 Omega +1 -3 0.82 x 10-10 *The mass of neutrinos is an elusive quantity and is an ongoing field of research. Determination of their mass is complicated by the fact that neutrinos undergo oscillations among all three types as they move through space. 1,
TABLE 44.2 Some Particles and Their Properties Particle Anti- Mass Category Name Symbol particle (MeV/c*) B L. L. L, Lifetime(s) Spin Leptons Electron 0.511 +1 Stable Electron-neutrinot <2 eV/c2 +1 Stable Muon 105.7 +1 2.20 x 10-6 <2 eV/c² 1 777 <2 eV/c? Muon-neutrinot +1 Stable Tau +1 2.9 x 10-13 Tau-neutrinot +1 Stable Hadrons Mesons Pion 139.6 2.60 x 10-8 Self 135.0 8.52 x 10-17s Каon K+ K- 493.7 +1 1.24 x 10-8 Kg Kg 497.7 +1 0.89 x 10-10 497.7 +1 5.1 x 10-8 Вaryons Proton P. 938.3 +1 Stable Neutron n 939.6 +1 881 1 115.7 1 189.4 1 192.6 1 197.4 1 232 1 232 1 232 1 232 1 315 1 322 1 672 Lambda A° +1 -1 2.6 x 10-10 Sigma Σ +1 -1 0.80 x 10-10 +1 -1 7.4 x 10-20 +1 -1 1.5 x 10-10 6 x 10-24 6 x 10-24 6 x 10-24 Delta 4++ +1 A+ +1 +1 +1 6 x 10-24 Xi +1 -2 2.9 x 10-10 +1 -2 1.64 x 10-10 Omega +1 -3 0.82 x 10-10 *The mass of neutrinos is an elusive quantity and is an ongoing field of research. Determination of their mass is complicated by the fact that neutrinos undergo oscillations among all three types as they move through space. 1,
Related questions
Question
A Λ0 particle at rest decays into a proton and a π- meson. (a) Use the data as shown to find the Q value for this decay in MeV. (b) What is the total kinetic energy shared by the proton and the π- meson after the decay? (c) What is the total momentum shared by the proton and the π- meson? (d) The proton and the π- meson have momenta with the same magnitude after the decay. Do they have equal kinetic energies? Explain.
Transcribed Image Text:TABLE 44.2 Some Particles and Their Properties
Particle
Anti-
Mass
Category
Name
Symbol
particle
(MeV/c*)
B
L.
L.
L,
Lifetime(s)
Spin
Leptons
Electron
0.511
+1
Stable
Electron-neutrinot
<2 eV/c2
+1
Stable
Muon
105.7
+1
2.20 x 10-6
<2 eV/c²
1 777
<2 eV/c?
Muon-neutrinot
+1
Stable
Tau
+1
2.9 x 10-13
Tau-neutrinot
+1
Stable
Hadrons
Mesons
Pion
139.6
2.60 x 10-8
Self
135.0
8.52 x 10-17s
Каon
K+
K-
493.7
+1
1.24 x 10-8
Kg
Kg
497.7
+1
0.89 x 10-10
497.7
+1
5.1 x 10-8
Вaryons
Proton
P.
938.3
+1
Stable
Neutron
n
939.6
+1
881
1 115.7
1 189.4
1 192.6
1 197.4
1 232
1 232
1 232
1 232
1 315
1 322
1 672
Lambda
A°
+1
-1
2.6 x 10-10
Sigma
Σ
+1
-1
0.80 x 10-10
+1
-1
7.4 x 10-20
+1
-1
1.5 x 10-10
6 x 10-24
6 x 10-24
6 x 10-24
Delta
4++
+1
A+
+1
+1
+1
6 x 10-24
Xi
+1
-2
2.9 x 10-10
+1
-2
1.64 x 10-10
Omega
+1
-3
0.82 x 10-10
*The mass of neutrinos is an elusive quantity and is an ongoing field of research. Determination of their mass is complicated by the fact that neutrinos undergo
oscillations among all three types as they move through space.
1,
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