Physics: Principles with Applications (7th Edition)

Published by Pearson
ISBN 10: 0-32162-592-7
ISBN 13: 978-0-32162-592-2

Chapter 32 - Elementary Particles - Problems - Page 945: 30

Answer

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Work Step by Step

a. $$B^- = b \overline{u}$$ Checking charge: $-1=-\frac{1}{3}-\frac{2}{3}$ Checking spin: $0=\frac{1}{2}-\frac{1}{2}$ Checking baryon number: $0=\frac{1}{3}-\frac{1}{3}$ Checking strangeness, charm, and topness: $0=0+0$ Checking bottomness: $-1=-1+0$ b. $B^+$ is the antiparticle of $B^-$, $$B^+ = \overline{b}u$$ $B^0$ has a bottom quark, but is electrically neutral. $$B^0 = b \overline{d}$$ $\overline{B}^0$ is the antiparticle of $B^0$. $$\overline{B}^0= \overline{b}d$$
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