RT Journal Article
T1 Measurements of the S-wave fraction in B0 → K + π − μ + μ − decays and the B0 → K ∗(892)0 μ + μ − differential branching fraction
A1 LHCb Collaboration, 
A1 Adeva Andany, Bernardo
A1 Borsato, Martino
A1 Chobanova, Veronika
A1 Cid Vidal, Xabier
A1 Dosil Suárez, Álvaro
A1 Fernández Albor, Víctor Manuel
A1 Gallas Torreira, Abraham Antonio
A1 García Pardiñas, Julián
A1 Hernando Morata, José Ángel
A1 Lemos Cid, Edgar
A1 Lucio Martínez, Miriam
A1 Martínez Santos, Diego
A1 Plo Casasus, Máximo
A1 Prisciandaro, Jessica
A1 Ramos Pernas, Miguel
A1 Romero Vidal, Antonio
A1 Saborido Silva, Juan José
A1 Sanmartín Sedes, Brais
A1 Santamarina Ríos, Cibrán
A1 Vázquez Regueiro, Pablo
A1 Vieites Díaz, María
A1 Vázquez Sierra, Carlos
K1 B physics
K1 Hadron-Hadron scattering (experiments)
K1 Rare decay
AB A measurement of the differential branching fraction of the decay B 0 → K ∗(892)0 μ + μ − is presented together with a determination of the S-wave fraction of the K + π − system in the decay B 0 → K +π− μ + μ −. The analysis is based on pp-collision data corresponding to an integrated luminosity of 3 fb−1 collected with the LHCb experiment. The measurements are made in bins of the invariant mass squared of the dimuon system, q 2. Precise theoretical predictions for the differential branching fraction of B 0 → K ∗(892)0 μ + μ − decays are available for the q 2 region 1.1 < q 2 < 6.0 GeV2 /c 4. In this q 2 region, for the K +π− invariant mass range 796 < m Kπ < 996 MeV/c 2, the S-wave fraction of the K +π− system in B 0 → K +π− μ + μ − decays is found to beFS=0.101±0.017(stat)±0.009(syst),and the differential branching fraction of B 0 → K ∗(892)0 μ + μ − decays is determined to bedB/dq2=(0.392+0.020−0.019(stat)±0.010(syst)±0.027(norm))×10−7c4/GeV2.The differential branching fraction measurements presented are the most precise to date and are found to be in agreement with Standard Model predictions.
PB Springer
SN 1029-8479
YR 2016
FD 2016
LK http://hdl.handle.net/10347/22440
UL http://hdl.handle.net/10347/22440
LA eng
NO Aaij, R., Adeva, B., Adinolfi, M. et al. Measurements of the S-wave fraction in B0 → K + π − μ + μ − decays and the B0 → K ∗(892)0 μ + μ − differential branching fraction. J. High Energ. Phys. 2016, 47 (2016). https://doi.org/10.1007/JHEP11(2016)047
DS Minerva
RD 25 abr 2026