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.

Measurement of form-factor-independent observables in the decay B0→K*0μ+μ- / R., A., B., A., M., A., C., A., A., A., Z., A., J., A., F., A., M., A., S., A., G., A., P. A., C., J. A., A., S., A., S., A., Y., A., L., A., J., A., R., A., J. E., A., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 111:19(2013). [10.1103/physrevlett.111.191801]

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

SARTI, ALESSIO;SCIUBBA, Adalberto;
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<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.
2013
01 Pubblicazione su rivista::01a Articolo in rivista
Measurement of form-factor-independent observables in the decay B0→K*0μ+μ- / R., A., B., A., M., A., C., A., A., A., Z., A., J., A., F., A., M., A., S., A., G., A., P. A., C., J. A., A., S., A., S., A., Y., A., L., A., J., A., R., A., J. E., A., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 111:19(2013). [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/11573/560391
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