Physics for Scientists and Engineers with Modern Physics
4th Edition
ISBN: 9780131495081
Author: Douglas C. Giancoli
Publisher: Addison-Wesley
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Chapter 43, Problem 14Q
To determine
The reason for the fact that baryons have spin
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If all of the quarks combining to form a meson are in the ground state, what are the possible spins a
meson might have? Give an example particle (and describe its constituents) for each of your answers.
You have entered a graduate program in particle physics and are learning about the use of symmetry. You begin by repeating the analysis that led to the prediction of the Ω- particle. Nine of the spin- 3/2 baryons are four ∆ particles, each with mass 1232 MeV/c2 , strangeness 0, and charges +2e, +e, 0, and -e; three Σ* particles, each with mass 1385 Me/c2 , strangeness -1, and charges +e, 0, and -e; and two Ξ* particles, each with mass 1530 MeV/c2 , strangeness -2, and charges 0 and -e. (a) Place these particles on a plot of S versus Q. Deduce the Q and S values of the tenth spin- 3/2 baryon, the Ω- particle, and place it on your diagram. Also label the particles with their masses. The mass of the Ω- is 1672 MeV/c2 ; is this value consistent with your diagram? (b) Deduce the three-quark combinations (of u, d, and s) that make up each of these ten particles. Redraw the plot of S versus Q from part (a) with each particle labeled by its quark content. What regularities do you see?
Determine the electric charge, baryon number, strangeness quantum number, and charm quantum number for the following quark combinations: (a) uds; (b) cu bar; (c) ddd; and (d) d c bar. Explain your reasoning.
Chapter 43 Solutions
Physics for Scientists and Engineers with Modern Physics
Ch. 43.1 - Prob. 1AECh. 43.2 - Prob. 1CECh. 43.9 - Prob. 1DECh. 43.9 - Prob. 1EECh. 43 - Prob. 1QCh. 43 - If a proton is moving at very high speed, so that...Ch. 43 - Prob. 3QCh. 43 - Prob. 4QCh. 43 - Prob. 5QCh. 43 - Prob. 6Q
Ch. 43 - Prob. 7QCh. 43 - Prob. 8QCh. 43 - Prob. 9QCh. 43 - Prob. 10QCh. 43 - Prob. 11QCh. 43 - Prob. 12QCh. 43 - Prob. 13QCh. 43 - Prob. 14QCh. 43 - Prob. 15QCh. 43 - Prob. 16QCh. 43 - Prob. 17QCh. 43 - Prob. 18QCh. 43 - Prob. 19QCh. 43 - Prob. 20QCh. 43 - Prob. 1PCh. 43 - Prob. 2PCh. 43 - Prob. 3PCh. 43 - Prob. 4PCh. 43 - Prob. 5PCh. 43 - Prob. 6PCh. 43 - Prob. 7PCh. 43 - Prob. 8PCh. 43 - Prob. 9PCh. 43 - Prob. 10PCh. 43 - Prob. 11PCh. 43 - Prob. 12PCh. 43 - Prob. 13PCh. 43 - Prob. 14PCh. 43 - Prob. 15PCh. 43 - Prob. 16PCh. 43 - Prob. 17PCh. 43 - Prob. 18PCh. 43 - Prob. 19PCh. 43 - Prob. 20PCh. 43 - Prob. 21PCh. 43 - Prob. 22PCh. 43 - Prob. 23PCh. 43 - Prob. 24PCh. 43 - Prob. 25PCh. 43 - Prob. 26PCh. 43 - Prob. 27PCh. 43 - Prob. 28PCh. 43 - Prob. 29PCh. 43 - Prob. 30PCh. 43 - Prob. 31PCh. 43 - Prob. 32PCh. 43 - Prob. 33PCh. 43 - Prob. 34PCh. 43 - Prob. 35PCh. 43 - Prob. 36PCh. 43 - Prob. 37PCh. 43 - Prob. 38PCh. 43 - Prob. 39PCh. 43 - Prob. 40PCh. 43 - Prob. 41PCh. 43 - Prob. 42PCh. 43 - Prob. 43PCh. 43 - Prob. 44PCh. 43 - Prob. 45PCh. 43 - Prob. 46GPCh. 43 - Prob. 47GPCh. 43 - Prob. 48GPCh. 43 - Prob. 49GPCh. 43 - Prob. 50GPCh. 43 - Prob. 51GPCh. 43 - Prob. 52GPCh. 43 - Prob. 53GPCh. 43 - Prob. 54GPCh. 43 - Prob. 55GPCh. 43 - Prob. 56GPCh. 43 - Prob. 57GPCh. 43 - Prob. 58GPCh. 43 - Prob. 59GPCh. 43 - Prob. 60GPCh. 43 - Prob. 61GPCh. 43 - Prob. 62GPCh. 43 - Prob. 63GPCh. 43 - Prob. 64GPCh. 43 - What fraction of the speed of light c is the speed...Ch. 43 - Prob. 66GPCh. 43 - Prob. 67GP
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- (a) What particle has the quark composition u-u-d? (b) What should its decay made be?arrow_forwardWhat do the quark compositions and other quantum numbers imply about the relationships between the ∆+ and the proton? The ∆0 and the neutron?arrow_forwardLepton. and Baryon conservation: For the reaction, tell me the missing particle @k+h -→ 1° + ? OP+Pp+ ^° + ?arrow_forward
- According to the standard model of the fundamental particles, what are the similarities between baryons and leptons? What are the most important differences?arrow_forwardThere are particles called bottom mesons orB-mesons. One of them is the B- meson, which has a single negative charge; its baryon number is zero, as are its strangeness, charm, and topness. It has a bottomness of -1 . What is its quark configuration?arrow_forwardExplain with reasons and showing working whether the following reactions and decays would be possible. For those that are possible state with reasons which of the fundamental forces is responsible. et +er+ + V₂ + µ¯¯ + ¯ μ B+ →+K+ ++ + ¯ p+nt →Σ+ + K+ [Quark structures are Bub, : cc, K+: us, E+ : uus] Write down a reaction that would provide a clean method of measuring the struc- ture of the neutron. Explain your answer. Sketch on separate graphs the d and d quark distributions of the neutron as a function of x, the fraction of the neutron's momentum carried by the struck quark. Include in each graph a comparison with the d and d quark distributions of the proton.arrow_forward
- Each of the following reactions is missing a single particle. Calculate the baryon number, charge, strangeness, and the three lepton numbers (where appropriate) of the missing particle, and from this identify the particle. (a) p + p S p + Λ0 + ?; (b) K- + n S Λ0 + ?; (c) pbar + p S n + ?; (d) n barm + p S n + ?arrow_forwardthe baryon number p + p → 2y. Determine (b) the baryon number and (c) the electron-lepton number of the reaction N → A° + K¯. Determine of the reactionarrow_forward** 18. Use the fact that the E* has charge +1, baryon number 1, and strangeness -1 to find its quark content. [Note: The strange quark is described in Table 26.4.]arrow_forward
- What spin does a gluon have and what is the charge of a down quark?arrow_forwardFor left-handed and right-handed quarks, what is the left-handed and right-handed coupling to Z bosons?arrow_forwardHow can quarks, which are fermions, combine to form bosons? Why must an even number combine to form a boson? Give one example by stating the quark substructure of a boson.arrow_forward
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