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 1.0 fb-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<19.0 GeV2/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%. © 2013 CERN.

Aaij, R., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., Ajaltouni, Z., et al. (2013). Measurement of form-factor-independent observables in the decay B0→K*0μ+μ-. PHYSICAL REVIEW LETTERS, 111(19) [10.1103/PhysRevLett.111.191801].

Measurement of form-factor-independent observables in the decay B0→K*0μ+μ-

CALVI, MARTA;GOTTI, CLAUDIO;Martinelli, M;
2013

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 1.0 fb-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
Articolo in rivista - Articolo scientifico
Physics and Astronomy (all)
English
2013
111
19
191801
none
Aaij, R., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., Ajaltouni, Z., et al. (2013). Measurement of form-factor-independent observables in the decay B0→K*0μ+μ-. PHYSICAL REVIEW LETTERS, 111(19) [10.1103/PhysRevLett.111.191801].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/66859
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