| 41. | The Upsilon is a flavourless meson called a quarkonium.
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| 42. | Adapted from Meson Galicia, Norwalk, Conn.
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| 43. | Several other hypothetical " exotic " mesons lie outside the quark model of classification.
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| 44. | These interactions usually produce pi mesons initially, which most often decay to muons.
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| 45. | Each pion consists of a quark and an antiquark and is therefore a meson.
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| 46. | The other members of this octet are the four kaons and the eta meson.
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| 47. | Examples of mesons include the pion, kaon, and the J / ?.
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| 48. | Meson power is dangerous to use in atmosphere.
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| 49. | By 1935 the nuclear force was conceived to be transmitted by particles called mesons.
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| 50. | CLEO decided to study the various bottom and charm quarkonia states and charm mesons.
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