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习题练习:Elementary Particles

 作者: 王信东Wood 发布日期: 2025-10-07 21:48   总分: 21分  得分: _____________

答题人: 游客未登录  开始时间: 10月07日 21:48  切换到: 整卷模式

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1#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Give a reaction between two nucleons, si43a7b0 cpml ak6jja /umilar to Eq. 32-4, that could produce a jb4 /ac3j6pkla u 70ma$\pi^0$.
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2#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If a proton is moving at very high speedb.hm;vy+oi o0 , so that its kinetic energy is much greater than its rest energy (v.ooy b0;m+ih $mc^2$), can it then decay via $p \to n + \pi^+$?  

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3#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
What would an "antiatom," m /yucehgy+(hth8v-51 x0d gue ade up of the antiparticles to the constituents of normal atomhhxg+ e0/v ce5d 1uy8u(ghy-ts, consist of? What might happen if antimatter, made of such antiatoms, came in contact with our normal world of matter?
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4#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
What particle in a decay signals the electromagnetir,tf.*ws;sej:ktrm 1 /ujo3j c interaction?
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5#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Does the presence of a neutrino among the dece36*vcjfbao z(+ gb )oay products of a particle necessarily mean that the decay occurs via bcv*6 go z(f +boaj3e)the weak interaction? Do all decays via the weak interaction produce a neutrino? Explain.
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6#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Why is it that a neutron decays via the weak interaction evenwkb7- kszpw0/;zd8a 9e t xpe. though the neutron and one of its decay products (proton) are stronglwkbd 8e pew;x-0k79 s/zpa.tz y interacting?
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7#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Which of the four interactions (strong, electromagnetic, weak, gravid(oj w52i+du++ (v6vn fk q(x mixa-titational) does an electron take par vm qxuivf+ (tx (wj++a65dd-(ni2koit in? A neutrino? A proton?
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8#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Check that charge and baryp (y/6imef7;lm-kmf m 34vj klon number are conserved in each of the decays in Table /y ;vmml l(f4f6 i3k emjp-m7k32-2.
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9#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Which of the particle decays in Table 32-2 occur via the electromagneo-onnaca/q6 -tic interacnan/o6 q a-o-ction?
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10#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Which of the particle decays in Tabl9/ 8k s okubxg7y+a.xee 32-2 occur by the weak interaction?
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11#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
By what interaction, and whcy+q4nj1i8hr9y* hirw z -f2l s2 irm6y, does $\Sigma^0$ decay to $\Lambda^0 + \gamma$? What about $\Xi^-$ decaying to $\Lambda^0 + \pi^-$?
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12#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
The $\Delta$ baryon has spin $\frac{3}{2}$, baryon number 1, and charge states $Q = +2, +1, 0, -1$. Why is there no charge state $Q = -2$?
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13#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Which of the particle decays in Table 32-4 occur via the electromagnetic intew7)+ n xbfxa:mracti7anb f:wx )x+mon?
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14#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Which of the particle decays in Table 32-4 occur by the weak interaxjfp coa 0j8 -ob*5/41ro doebction?
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15#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Quarks have spin $\frac{1}{2}$. How do you account for the fact that baryons have spin $\frac{1}{2}$ or $\frac{3}{2}$, and mesons have spin 0 or 1?
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16#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Suppose there were a kind of "neutrinolet" that wag.4(3fafvi4bk l as s6s massless, had no color charge or electrical charge, and did not fesfga b(is.44 v3lk f6ael the weak force. Could you say that this particle even exists?
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17#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Is it possible for a 6hj8 h;m6zkng si/ tf1particle to be both
(a) a lepton and a baryon?
(b) a baryon and a hadron? 
(c) a meson and a quark? 
(d) a hadron and a lepton?  
Explain.

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18#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Using the ideas of quantum chromodynamics, would it be possivkoura-,oc-q:b/1 t *ti hm +fble to find particles made up of two quarks and no antiquarks? What about two quarks and two antiq ua-f+qcib*,1k t/ mo:o-thrvuarks?
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19#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Why do neutrons decay when they arcm m0u5slp7xa;s hth/7g)e, ie free but not when they are inside the nucleus?l ap,m)tmx h/ic;5hue70sgs 7
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20#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Is the reaction $e^- + p \to n + \nu_e$ possible? Explain.  

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21#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Occasionally, the $\pi^+$ will decay by the following reaction: $\pi^+ \to e^+ + \nu_e$. Which of the four forces in nature is responsible for this decay? How do you know?
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总分:21分 及格:12.6分 时间:不限时
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