Measurement of Form-Factor-Independent Observables in the Decay B0→K*0μ+μ-
Abstract
We present a measurement of form-factor-independent angular observables in the decay B0→K*(892)0μ+μ-. The analysis is based on a data sample corresponding to an integrated luminosity of 1.0fb-1, collected by the LHCb experiment in pp collisions at a center-of-mass energy of 7 TeV. Four observables are measured in six bins of the dimuon invariant mass squared q2 in the range 0.1<q2<19.0GeV2/c4. Agreement with recent theoretical predictions of the standard model is found for 23 of the 24 measurements. A local discrepancy, corresponding to 3.7 Gaussian standard deviations is observed in one q2 bin for one of the observables. Considering the 24 measurements as independent, the probability to observe such a discrepancy, or larger, in one is 0.5%.
- Publication:
-
Physical Review Letters
- Pub Date:
- November 2013
- DOI:
- 10.1103/PhysRevLett.111.191801
- arXiv:
- arXiv:1308.1707
- Bibcode:
- 2013PhRvL.111s1801A
- Keywords:
-
- 13.20.He;
- 11.30.Rd;
- 12.60.-i;
- Decays of bottom mesons;
- Chiral symmetries;
- Models beyond the standard model;
- High Energy Physics - Experiment
- E-Print:
- Phys. Rev. Lett. 111, 191801 (2013)