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arXiv 0707.0294hep-ph
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B_s混合的寿命差:标准模型及以后

Lifetime Difference in B_s mixing: Standard Model and beyond

Andriy Badin, Fabrizio Gabbiani, Alexey A. Petrov

摘要:

本文计算了重夸克展开中B_s介子寿命差ΔΓ_s的1/m^2_b修正。我们发现它们很小,对ΔΓ_s有显著影响,并给出了包含非微扰1/m_b和1/m_b^2修正的寿命差的结果。我们还分析了一般ΔB = 1的新物理对ΔΓ_s的贡献,并给出了几个例子。

英文摘要:

We present a calculation of 1/m^2_b corrections to the lifetime differences of B_s mesons ΔΓ_s in the heavy-quark expansion. We find that they are small to significantly affect ΔΓ_s and present the result for lifetime difference including non-perturbative 1/m_b and 1/m_b^2 corrections. We also analyze the generic ΔB = 1 New Physics contributions to ΔΓ_s and provide several examples.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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