Measurements of the differential branching fraction and angular moments of the decay B0 → K+π−μ+μ− in the K+π− invariant mass range 1330 < m(K+π−) < 1530 MeV/c2 are presented. Proton-proton collision data are used, corresponding to an integrated luminosity of 3 fb−1 collected by the LHCb experiment. Differential branching fraction measurements are reported in five bins of the invariant mass squared of the dimuon system, q2, between 0.1 and 8.0 GeV2/c4. For the first time, an angular analysis sensitive to the S-, P- and D-wave contributions of this rare decay is performed. The set of 40 normalised angular moments describing the decay is presented for the q2 range 1.1-6.0 GeV2/c4.
Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., et al. (2016). Differential branching fraction and angular moments analysis of the decay B 0 → K +π− μ + μ − in the K 0,2∗ (1430)0 region. JOURNAL OF HIGH ENERGY PHYSICS, 2016(12) [10.1007/JHEP12(2016)065].
Differential branching fraction and angular moments analysis of the decay B 0 → K +π− μ + μ − in the K 0,2∗ (1430)0 region
BELLOLI, NICOLETTAMembro del Collaboration Group
;BORGHERESI, ALESSIOMembro del Collaboration Group
;Borsato, M;CALVI, MARTAMembro del Collaboration Group
;CARNITI, PAOLOMembro del Collaboration Group
;CASSINA, LORENZOMembro del Collaboration Group
;FAZZINI, DAVIDEMembro del Collaboration Group
;GOTTI, CLAUDIOMembro del Collaboration Group
;GRILLO, LUCIAMembro del Collaboration Group
;Martinelli, MMembro del Collaboration Group
;Petruzzo, M;
2016
Abstract
Measurements of the differential branching fraction and angular moments of the decay B0 → K+π−μ+μ− in the K+π− invariant mass range 1330 < m(K+π−) < 1530 MeV/c2 are presented. Proton-proton collision data are used, corresponding to an integrated luminosity of 3 fb−1 collected by the LHCb experiment. Differential branching fraction measurements are reported in five bins of the invariant mass squared of the dimuon system, q2, between 0.1 and 8.0 GeV2/c4. For the first time, an angular analysis sensitive to the S-, P- and D-wave contributions of this rare decay is performed. The set of 40 normalised angular moments describing the decay is presented for the q2 range 1.1-6.0 GeV2/c4.
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