Modern Physics
3rd Edition
ISBN: 9781111794378
Author: Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Publisher: Cengage Learning
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Chapter 15, Problem 10P
To determine
Whether strangeness is conserved in given decays.
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Determine which of the following decays or reactions is not allowed and explain why. (a) p + p → p + π++Λ+-K0 (b) Λ → p + π0
Which of the following reactions and decays are possible? For those forbidden, explain what laws are violated.
(a) π−+p→n+η0
(b) π++p→n+π0
(c) π++p→n+e+
(d) p→e++νe
(e)μ+→e++νμ
(f) p→n+e++νe
Determine which of the following decays is not allowed and explain why. (a) π+ → μ+ + n (b) μ- → e- + γ (c) Λ → p + π- (d) p → π+ + π0
Chapter 15 Solutions
Modern Physics
Ch. 15.6 - Prob. 2ECh. 15.7 - Prob. 3ECh. 15 - Prob. 1QCh. 15 - Prob. 2QCh. 15 - Prob. 3QCh. 15 - Prob. 4QCh. 15 - Prob. 5QCh. 15 - Prob. 6QCh. 15 - Prob. 7QCh. 15 - Prob. 9Q
Ch. 15 - Prob. 10QCh. 15 - Prob. 11QCh. 15 - Prob. 12QCh. 15 - Prob. 14QCh. 15 - Prob. 15QCh. 15 - Prob. 16QCh. 15 - Prob. 17QCh. 15 - Prob. 18QCh. 15 - Prob. 1PCh. 15 - Prob. 2PCh. 15 - Prob. 3PCh. 15 - Prob. 4PCh. 15 - Prob. 5PCh. 15 - Prob. 6PCh. 15 - Prob. 7PCh. 15 - Prob. 8PCh. 15 - Prob. 9PCh. 15 - Prob. 10PCh. 15 - Prob. 11PCh. 15 - Prob. 12PCh. 15 - Prob. 13PCh. 15 - Prob. 14PCh. 15 - Prob. 15PCh. 15 - Prob. 16PCh. 15 - Prob. 17PCh. 15 - Prob. 18PCh. 15 - Prob. 19PCh. 15 - Prob. 20PCh. 15 - Prob. 21PCh. 15 - Prob. 22PCh. 15 - Prob. 23PCh. 15 - An unstable particle, initially at rest, decays...Ch. 15 - Prob. 25PCh. 15 - Prob. 26PCh. 15 - Prob. 27PCh. 15 - Prob. 28PCh. 15 - Prob. 29PCh. 15 - Prob. 30PCh. 15 - Prob. 31PCh. 15 - Prob. 32PCh. 15 - Prob. 33PCh. 15 - Prob. 34PCh. 15 - Prob. 35PCh. 15 - Prob. 36P
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- The K0 meson is an uncharged member of the particle “zoo” that decays into two charged pions according to K0 → π+ + π−. The pions have opposite charges, as indicated, and the same mass, mπ = 140 MeV/c2. Suppose that a K0 at rest decays into two pions in a bubble chamber in which a magnetic field of 2.0 T is present (see Fig. P2.22). If the radius of curvature of the pions is 34.4 cm, find (a) the momenta and speeds of the pions and (b) the mass of the K0 meson.arrow_forwardA pion at rest (m = 273me) decays to a muon (m = 207me) and an antineutrino (mp 0). The reaction is written + v. Find (a) the kinetic energy of the muon and (b) the energy of the antineutrino in electron volts.arrow_forwardThe primary decay mode for the negative pion is +v . (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 p = E/c , just like a photon.arrow_forward
- For each of the following forbidden decays, determine whatconservation laws are violated.(a) μ- → e- + γ (b) n → π + e- + ve(c) Λ0 → p + π0 (d) p → e+ + π0(e) Ξ0 → n + π0arrow_forwardWhich of the following processes are allowed by the strong interaction, the electromagnetic interaction, the weak interaction, or no interaction at all? (a) π− + P → 2η0 (b) K− + n → ^0 + π− (c) K− → π− + π0 (d) Ω− → Ξ− + π0 (e) η0 → 2γarrow_forwardState which of the following decay modes is more likely. Justify the answer well. D+ → K + 2π+ or or D+ → π++πºarrow_forward
- Which of the following reactions cannot occur? (Select all that apply.) γ + p → n + π0p + p → 2γπ+ + p → K+ + Σ+π0 + n → K+ + Σ-arrow_forwardPlease do it correctly, asap!arrow_forwardDetermine whether or not strangeness is conserved in the following decays and reactions. (a) ^0 → p + π− (b) π− + p → ^0 + K0 (c) P- + p → 0 (d) π− + p → π− + Σ+ (e) Ξ− → ^0π−0 → p + π−arrow_forward
- Which of the following decays are allowed and which are forbidden? If the decay is allowed, state which interaction is responsible. If it is forbidden, state which conserva- tion law its occurrence would violate. (а) п" > е +y (Б) п° > е + e* + v, + v (c) T* → e¯ + e* + µ* + (d) Aº → T* + a¯ (е) п— р + е+i Vµarrow_forwardThe following reactions or decays involve one or more neutrinos.In each case, supply the missing neutrino (υe, υμ, or υt ) or antineutrino.(a) π- → μ- + ? (b) K+ → μ+ + ?(c) ? + p → n + e+ (d) ? + n → p + e-(e) ? + n → p + μ- (f) μ- → e- + ? + ?arrow_forwardSome GUT theories allow the proton to be unstable. What conservation laws are broken in the following proton decays? (a) p → π+ + ve bar (b) p → μ+ + π0 (c) p → e+ + K0 + vearrow_forward
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