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Strange B meson : ウィキペディア英語版
Strange B meson

The meson is a meson composed of a bottom antiquark and a strange quark. Its antiparticle is the meson, composed of a bottom quark and a strange antiquark.
== B–B oscillations ==
Strange B mesons are noted for their ability to oscillate between matter and antimatter via a box-diagram with measured by CDF experiment at Fermilab.
That is, a meson composed of a bottom quark and strange antiquark, the strange meson, can spontaneously change into an bottom antiquark and strange quark pair, the strange meson, and vice versa.
On 25 September 2006, Fermilab announced that they had claimed discovery of previously-only-theorized Bs meson oscillation.〔
〕 According to Fermilab's press release:
Ronald Kotulak, writing for the Chicago Tribune, called the particle "bizarre" and stated that the meson "may open the door to a new era of physics" with its proven interactions with the "spooky realm of antimatter".〔

Better understanding of the meson is one of the main objectives of the LHCb experiment conducted at the Large Hadron Collider.〔
〕 On April 24, 2013, CERN physicists in the LHCb collaboration announced that they had observed CP violation in the decay of strange mesons for the first time.〔
〕〔
〕 Scientists found the Bs meson decaying into two muons for the first time, with Large Hadron Collider experiments casting doubt on the scientific theory of supersymmetry.〔

CERN physicist Tara Shears described the CP violation observations as "verification of the validity of the Standard Model of physics".〔


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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