Question

There are particles called bottom mesons or B-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?

a) b+b+u
b) s+s+b
c) b+u+d
d) b+b+c

Answer 1

The quark configuration of the- B-meson is b+u+d.

Step-by-step explanation:

The quark configuration of the B- meson is b+u+d.

Quarks are elementary particles that make up composite particles like the B- meson. The B- meson consists of three quarks: a bottom quark (b- with charge -1/3), an up quark (u with charge +2/3), and a down quark (d with charge -1/3).

Among the given options:

a)

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+

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+

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b+b+u - This doesn't match the quark content of a

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−

B

−

meson.

b)

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+

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+

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s+s+b - This has a strange quark (

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s), but the

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−

B

−

meson doesn't have any strangeness.

c)

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+

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+

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b+u+d - This doesn't have the correct antiquark (

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ˉ

b

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) in the combination.

d)

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+

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+

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b+b+c - This doesn't match the quark content of a

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−

B

−

meson.

Therefore, the correct answer is not among the given options. The correct quark configuration for a

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−

B

−

meson is

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b

ˉ

d.