College Physics
1st Edition
ISBN: 9781938168048
Author: Paul Peter Urone, OpenStax, Roger Hinrichs
Publisher: OpenStax
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Textbook Question
Chapter 33, Problem 17CQ
Why is it easier to see the properties of the c, b, and t quarks in mesons having composition W− or 
rather than in baryons having a mixture of quarks, such as udb?
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Why is it easier to see the properties of the c, b, and t quarks in mesons having composition W − or tt - rather than in baryons having a mixture of quarks, such as udb?
One of the decay modes of the omega minus is Ω− → Λ0 + K−..(a) What is the change in strangeness?(b) Verify that baryon number and charge are conserved,while lepton numbers are unaffected.(c) Write the equation in terms of the constituent quarks,indicating that the weak force is responsible.
The principal decay mode of the sigma zero is ∑0 → ʌ0 + ϒ . Considering the quark structure of the two baryons, does it appear that the ∑0 is an excited state of the ʌ0 ?
Chapter 33 Solutions
College Physics
Ch. 33 - The total energy in the beam of an accelerator is...Ch. 33 - Synchrotron radiation takes energy from an...Ch. 33 - What two major limitations prevent us from...Ch. 33 - What are the advantages of collidingbeam...Ch. 33 - Large quanti?es of antimatter isolated from normal...Ch. 33 - Massless particles are not only neutral, they are...Ch. 33 - Massless particles must travel at the speed of...Ch. 33 - When a stat erupts in a supernova explosion, huge...Ch. 33 - Theorists have had spectacular success in...Ch. 33 - What lifetime do you expect for an antineutron...
Ch. 33 - Why does the meson have such a short lifetime...Ch. 33 - (a) Is a hadron always a baryon? (b) Is a baryon...Ch. 33 - Explain how conservation of baryon number is...Ch. 33 - The quark ?avor change it takes place in decay....Ch. 33 - Explain how the weak force can change strangeness...Ch. 33 - Beta decay is caused by the weak force, as are all...Ch. 33 - Why is it easier to see the properties of the c,...Ch. 33 - How can quarks, which are fermions, combine to...Ch. 33 - What evidence is cited is support the contention...Ch. 33 - Discuss how we know that (mesons are not...Ch. 33 - An antibaryon has three antiquarks with colors...Ch. 33 - Suppose leptons are created in a reaction. Does...Ch. 33 - How can the lifetime of a particle indicate that...Ch. 33 - (a) Do all particles having strangeness also have...Ch. 33 - The sigmazero particle decays mostly via the...Ch. 33 - What do the quark compositions and other quantum...Ch. 33 - Discuss the similarities and differences between...Ch. 33 - Identity evidence for electroweak unification.Ch. 33 - The quarks in a particle are con?ned, meaning...Ch. 33 - If a GUT is proven, and the four forces are...Ch. 33 - If the Higgs boson is discovered and found to have...Ch. 33 - Gluons and the photon are massless. Does this...Ch. 33 - A virtual particle having an approximate mass of...Ch. 33 - Calculate the mass in of a virtual carrier...Ch. 33 - Another component of the strong nuclear force is...Ch. 33 - (a) Find the ratio of the strengths the weak and...Ch. 33 - We ratio of the strong to the weak force and the...Ch. 33 - At full energy, protons in the 2.00kmdiameter...Ch. 33 - Suppose a W created in a bubble chamber lives for...Ch. 33 - What length track does a (+ traveling at 0.100 c...Ch. 33 - The 3.20kmlong SLAC produces a beam of 50.0GeV...Ch. 33 - Because of energy loss due to synchrotron...Ch. 33 - A proton and an antiproton collide headon, with...Ch. 33 - When an electron and positron collide at the SLAC...Ch. 33 - The is its own antiparticle and decays in the...Ch. 33 - The primary decay mode for the negative pion is...Ch. 33 - The mass of a theoretical particle that may be...Ch. 33 - The decay mode of the negative muon is (a) Find...Ch. 33 - The decay mode of the positive tau is (a) What...Ch. 33 - The principal decay mode at the sigma zero is (a)...Ch. 33 - (a) What is the uncertainty in the energy released...Ch. 33 - (a) What is the uncertainty in the energy released...Ch. 33 - (a) Verify from its quark composition that the...Ch. 33 - Accelerators such as the Triangle Universities...Ch. 33 - The reaction (described in the preceding problem)...Ch. 33 - One of the decay modes of the omega minus is (a)...Ch. 33 - Repeat the previous problem for the decay modeCh. 33 - One decay mode for the etazero meson is (a) Find...Ch. 33 - One decay mode for the etazero meson is (a) Write...Ch. 33 - Is the decay possible considering the appropriate...Ch. 33 - Is the decay possible considering the appropriate...Ch. 33 - (a) Is the decay possible considering the...Ch. 33 - (a) Is the decay possible considering the...Ch. 33 - The only combination of quark colors that produces...Ch. 33 - (a) Three quarks form a baryon. How many...Ch. 33 - (a) Show that the conjectured decay of the proton,...Ch. 33 - Verify the quantum numbers given for the + in...Ch. 33 - Verify the quantum numbers given for the proton...Ch. 33 - (a) How much energy would be released if the...Ch. 33 - (a) Find the charge, baryon number, strangeness,...Ch. 33 - There are particles called Dmesons. One of them is...Ch. 33 - There are particles called bottom mesons or...Ch. 33 - (a) What particle has the quark composition u-u-d?...Ch. 33 - (a) Show than all combinations of three quarks...Ch. 33 - Integrated Concepts The intensity of cosmic ray...Ch. 33 - Integrated Concepts Assuming conservation of...Ch. 33 - Integrated Concepts What is the wavelength of a...Ch. 33 - Integrated Concepts Calculate the relativistic...Ch. 33 - Integrated Concepts The primary decay mode for the...Ch. 33 - Integrated Concepts Plans for an accelerator that...Ch. 33 - Integrated Concepts Suppose you are designing a...Ch. 33 - Integrated Concepts In supernovas, neutrinos are...Ch. 33 - Construct Your Own Problem Consider an...Ch. 33 - Construct Your Own Problem Consider a detector...
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- (a) Show that the conjectured decay of the proton, violates conservation of baryon number and conservation of lepton number. (b) What is the analogous decay process for the antiproton?arrow_forward(a) Is the decay possible considering the appropriate conservation laws? State why or why not. (b) Write the decay in terms of the quark constituents of the particles.arrow_forward(a) Is a hadron always a baryon? (b) Is a baryon always a hadron? (c) Can an unstable baryon decay into a meson, leaving no other baryon?arrow_forward
- (a) Find the charge, baryon number, strangeness, charm, and bottomness of the particle from its quark composition. (b) Do the same for the particle.arrow_forward(a) Show than all combinations of three quarks produce integral changes. Thus baryons must have integral charge. (b) Show than all combinations at a quark and an antiquark produce only integral charges. Thus mesons must have integral change.arrow_forward(a) Three quarks form a baryon. How many combinations of the six known quarks are there if all combinations are possible? (b) This number is less than the number of known baryons. Explain why.arrow_forward
- (a) Is the decay possible considering the appropriate conservation laws? Stale why or why not. (b) Write the decay in terms of the quark constituents of the particles.arrow_forwardExplain how conservation of baryon number is responsible for conservation of total atomic mass (total number at nucleons) in nuclear decay and reactions.arrow_forwardThe quarks in a particle are con?ned, meaning individual quarks cannot be directly observed. Are gluons con?ned as well? Explainarrow_forward
- One of the decay modes of the omega minus is (a) What is the change in strangeness? (b) Verify that baryon number and charge are conserved, while lepton numbers are unaffected. (c) Write the equation in terms of the constituent quarks, indicating that the weak force is responsible.arrow_forwardThe 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_forwardOne decay mode for the etazero meson is (a) Write the decay in terms at the quark constituents. (b) How much energy is released? (c) What is the ultimate release of energy, given the decay mode for the pi zero isarrow_forward
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