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arXiv 1302.1471hep-ph
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可能观测到增强的Bd0 --> mu+ mu-衰变的意义

Implication of possible observation of enhanced Bd0 --> mu+ mu- decay

Wei-Shu Hou, Masaya Kohda, Fanrong Xu

摘要:

在2015年13 TeV运行之前,非常罕见的Bd 0-> mu+ mu-衰变可能是LHC中新物理学在风味部门的最后机会。由于sin(2 β/φ_1)中已知的张力,超过(3-4)× 10^-10的增强可能意味着第四代夸克的效应。如果在这个水平上观察,126 GeV的玻色子可能不是真正的希格斯玻色子玻色子,而b --> d四边形(模m_t ')会跳出来。2011-2012年的数据可能对低于3 x 10^-10的值不敏感,13 TeV的运行应该继续追求这种模式。

英文摘要:

The very rare Bd0 --> mu+ mu- decay may be the last chance for New Physics in flavor sector at the LHC, before the 13 TeV run in 2015. Partially motivated by the known tension in sin(2beta/phi_1), enhancement beyond (3-4) x 10^-10 would likely imply the effect of a fourth generation of quarks. If observed at this level, the 126 GeV boson may not be the actual Higgs boson, while the b --> d quadrangle (modulo m_t') would jump out. The 2011-2012 data is likely not sensitive to values below 3 x 10^-10, and the mode should continue to be pursued with the 13 TeV run.

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