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arXiv 0712.1708hep-ex
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用ppbar碰撞的2fb-1寻找Bs-> mu + mu-和Bd-> mu + mu-衰变

Search for Bs --> mu+mu- and Bd --> mu+mu- Decays with 2fb-1 of ppbar Collisions

CDF Collaboration, T. Aaltonen

摘要:

利用费米实验室Tevatron对撞机CDF II探测器收集的2fb-1的积分亮度,对sqrt(s)= 1.96TeV的ppbar碰撞中的Bs-> μ + μ-和Bd-> μ + μ-衰变进行了研究。观察到的Bs和Bd候选物的数量与背景预期一致。在95% C. L时,得到的支化分数上限为B(Bs--> mu + mu-)<5.8 × 10 ^-8,B(Bd--> mu + mu-)<1.8 × 10 ^-8。

英文摘要:

We have performed a search for Bs-->mu+mu- and Bd-->mu+mu- decays in ppbar collisions at sqrt(s) = 1.96TeV using 2fb-1 of integrated luminosity collected by the CDF II detector at the Fermilab Tevatron Collider. The observed number of Bs and Bd candidates is consistent with background expectations. The resulting upper limits on the branching fractions are B(Bs-->mu+mu-) < 5.8X10^-8 and B(Bd-->mu+mu-) < 1.8X10^-8 at 95% C.L.

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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