Study of the rare decays of Bs0B^0_s and B0B^0 into muon pairs from data collected during the LHC Run 1 with the ATLAS detector

Collaboration
Apr 14, 2016
46 pages
Published in:
  • Eur.Phys.J.C 76 (2016) 9, 513
  • Published: Sep 21, 2016
e-Print:
Report number:
  • CERN-EP-2016-064
Experiments:

Citations per year

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Abstract: (Springer)
A study of the decays Bs0μ+μB^0_s \rightarrow \mu ^+\mu ^- and B0μ+μB^0 \rightarrow \mu ^+\mu ^- has been performed using data corresponding to an integrated luminosity of 25 fb1^{-1} of 7 and 8 TeV proton–proton collisions collected with the ATLAS detector during the LHC Run 1. For the B0B^0 dimuon decay, an upper limit on the branching fraction is set at B(B0μ+μ)<4.2×1010\mathcal{B}(B^0 \rightarrow \mu ^+\mu ^-) < 4.2 \times 10^{-10} at 95 % confidence level. For Bs0B^0_s , the branching fraction B(Bs0μ+μ)=(0.9+1.10.8)×109\mathcal{B}(B^0_s \rightarrow \mu ^+\mu ^-) = \left( 0.9^{+1.1-0.8} \right) \times 10^{-9} is measured. The results are consistent with the Standard Model expectation with a p value of 4.8 %, corresponding to 2.0 standard deviations.
Note:
  • p p: scattering
  • p p: colliding beams
  • B0: rare decay
  • B0: leptonic decay
  • B/s0: rare decay
  • B/s0: leptonic decay
  • muon: pair production
  • B0: branching ratio
  • B/s0: branching ratio
  • CERN LHC Coll