RT Journal Article
T1 Measurement of CP asymmetries in the decays B 0 → K *0 μ + μ − and B + → K + μ + μ −
A1 LHCb Collaboration, 
A1 Adeva Andany, Bernardo
A1 Álvarez Cartelle, Paula
A1 Dosil Suárez, Álvaro
A1 Fernández Albor, Víctor Manuel
A1 Gallas Torreira, Abraham Antonio
A1 García Pardiñas, Julián
A1 Hernando Morata, José Ángel
A1 Pazos Álvarez, Antonio
A1 Pérez Trigo, Eliseo
A1 Plo Casasus, Máximo
A1 Romero Vidal, Antonio
A1 Saborido Silva, Juan José
A1 Sanmartín Sedes, Brais
A1 Santamarina Ríos, Cibrán
A1 Seco Miguélez, Marcos Antonio
A1 Vázquez Regueiro, Pablo
A1 Vázquez Sierra, Carlos
A1 Vieites Díaz, María
K1 Rare decay
K1 CP violation
K1 Hadron-Hadron Scattering
K1 B physics
K1 Flavour Changing Neutral Currents
AB The direct CP asymmetries of the decays B 0 → K *0 μ + μ − and B + → K + μ + μ − are measured using pp collision data corresponding to an integrated luminosity of 3.0 fb−1 collected with the LHCb detector. The respective control modes B 0 → J/ψK *0 and B + → J/ψK + are used to account for detection and production asymmetries. The measurements are made in several intervals of μ + μ − invariant mass squared, with the ϕ(1020) and charmonium resonance regions excluded. Under the hypothesis of zero CP asymmetry in the control modes, the average values of the asymmetries areACP(B0→K∗0μ+μ−)=−0.035±0.024±0.003,ACP(B+→K+μ+μ−)=0.012±0.017±0.001,where the first uncertainties are statistical and the second are due to systematic effects. Both measurements are consistent with the Standard Model prediction of small CP asymmetry in these decays.
PB Springer
SN 1029-8479
YR 2014
FD 2014
LK http://hdl.handle.net/10347/22003
UL http://hdl.handle.net/10347/22003
LA eng
NO Aaij, R., Adeva, B., Adinolfi, M. et al. Measurement of CP asymmetries in the decays B 0 → K *0 μ + μ − and B + → K + μ + μ − . J. High Energ. Phys. 2014, 177 (2014). https://doi.org/10.1007/JHEP09(2014)177
DS Minerva
RD 28 abr 2026