RT Journal Article
T1 First measurement of the differential branching fraction and CP asymmetry of the B ± → π ± μ + μ − decay
A1 LHCb Collaboration, 
A1 Adeva Andany, Bernardo
A1 Dosil Suárez, Álvaro
A1 Fernández Albor, Víctor Manuel
A1 Gallas Torreira, Abraham Antonio
A1 García Pardiñas, Julián
A1 Lemos Cid, Edgar
A1 Lucio Martínez, Miriam
A1 Martínez Santos, Diego
A1 Plo Casasus, Máximo
A1 Romero Vidal, Antonio
A1 Saborido Silva, Juan José
A1 Sanmartín Sedes, Brais
A1 Santamarina Ríos, Cibrán
A1 Vázquez Regueiro, Pablo
A1 Vázquez Sierra, Carlos
A1 Vieites Díaz, María
K1 Rare decay
K1 CP violation
K1 Hadron-Hadron Scattering
K1 Branching fraction
K1 B physics
AB The differential branching fraction with respect to the dimuon invariant mass squared, and the CP asymmetry of the B ± → π ± μ + μ − decay are measured for the first time. The CKM matrix elements |V td | and |V ts |, and the ratio |V td /V ts | are determined. The analysis is performed using proton-proton collision data corresponding to an integrated luminosity of 3.0 fb−1, collected by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. The total branching fraction and CP asymmetry of B ± → π ± μ + μ − decays are measured to beB(B±→π±μ+μ−)=(1.83±0.24±0.05)×10−8andACP(B±→π±μ+μ−)=−0.11±0.12±0.01,where the first uncertainties are statistical and the second are systematic. These are the most precise measurements of these observables to date, and they are compatible with the predictions of the Standard Model
PB Springer
YR 2015
FD 2015
LK http://hdl.handle.net/10347/21711
UL http://hdl.handle.net/10347/21711
LA eng
NO Aaij, R., Adeva, B., Adinolfi, M. et al. First measurement of the differential branching fraction and CP asymmetry of the B ± → π ± μ + μ − decay. J. High Energ. Phys. 2015, 34 (2015). https://doi.org/10.1007/JHEP10(2015)034
DS Minerva
RD 24 abr 2026