Question

What is the quark combination needed to produce a $\mathrm{D}^{0}$ meson $(Q=B=S=0, c=+1) ?$

Name: Problem 42, Chapter 43: Physics for Scientists and Engineers with Modern Physics
Uploaded: 2022-11-26T22:32:34-08:00
Duration: 2 min 33 s
Channel: Robert Schnibbe
Description: What is the quark combination needed to produce a D^0 meson (Q=B=S=0, c=+1) ?

   What is the quark combination needed to produce a $\mathrm{D}^{0}$ meson $(Q=B=S=0, c=+1) ?$

Physics for Scientists and Engineers with Modern Physics

Douglas C. Giancoli 4th Edition

Chapter 43, Problem 42

Instant Answer

Solved by Expert Robert Schnibbe

11/26/2022

Step 1

The charge (Q), baryon number (B), and strangeness (S) are all 0, while the charm (c) is +1. The lepton number is also 0, as it is not a lepton. Show more…

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What is the quark combination needed to produce a $\mathrm{D}^{0}$ meson $(Q=B=S=0, c=+1) ?$

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Key Concepts

Meson Structure

Mesons are particles composed of one quark and one antiquark bound together by the strong force. Their identity and properties are determined by the flavors and quantum numbers of these constituent particles.

Quark Flavors and Quantum Numbers

Quarks come in various flavors such as up, down, strange, charm, bottom, and top, each carrying specific quantum numbers including electric charge, baryon number, and flavor quantum numbers like charm. These quantum numbers combine in quark-antiquark pairs to yield mesons with the observed totals.

Charge and Conservation Principles

The overall properties of a meson, such as its net electric charge, must result from the sum of the charges of its quark and antiquark. For example, to form a meson with zero net charge but a charm quantum number of +1, the combination must include a charm quark and an antiquark with the appropriate opposite charge.

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