A search for Bs0→μ +μ - and B0→μ +μ - decays is performed using 1.0fb -1 of pp collision data collected at √s=7TeV with the LHCb experiment at the Large Hadron Collider. For both decays, the number of observed events is consistent with expectation from background and standard model signal predictions. Upper limits on the branching fractions are determined to be B(Bs0→μ +μ -)<4.5(3.8)×10 -9 and B(B0→μ +μ -)<1.0(0.81)×10 -9 at 95% (90%) confidence level.
Bibliographical noteFunding Information:
This work was supported by the China Post-doctoral Foundation No. 2012M520572 , Tianjin Municipal Education Commission Grant No. 20120401 , and Tianjin Municipal Science and Technology Commission Key Project No. ( 14JCZDJC39500 ).
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)