RT Journal Article
T1 Model-independent measurement of the CKM angle γ using B0 → DK∗0 decays with D → K0S π + π − and K0SK+K−
A1 LHCb Collaboration, 
A1 Adeva Andany, Bernardo
A1 Borsato, Martino
A1 Chobanova, Veronika
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 Vázquez Sierra, Carlos
A1 Vieites Díaz, María
K1 B physics
K1 CKM angle gamma
K1 CP violation
K1 Flavor physics
K1 Hadron-Hadron scattering (experiments)
AB A binned Dalitz plot analysis of the decays B 0 → DK ∗0, with D → K 0S π + π − and D → K  0S K + K −, is performed to measure the observables x ± and y ±, which are related to the CKM angle γ and the hadronic parameters of the decays. The D decay strong phase variation over the Dalitz plot is taken from measurements performed at the CLEO-c experiment, making the analysis independent of the D decay model. With a sample of proton-proton collision data, corresponding to an integrated luminosity of 3.0 fb−1, collected by the LHCb experiment, the values of the CP violation parameters are found to be x + = 0.05 ± 0.35 ± 0.02, x − = −0.31 ± 0.20 ± 0.04, y + = −0.81 ± 0.28 ± 0.06 and y − = 0.31 ± 0.21 ± 0.05, where the first uncertainties are statistical and the second systematic. These observables correspond to values γ = (71 ± 20)°, rB0=0.56±0.17 and δB0=(204+21−20)∘. The parameters rB0 and δB0 are the magnitude ratio and strong phase difference between the suppressed and favoured B 0 decay amplitudes, and have been measured in a region of ±50 MeV/c 2 around the K ∗(892)0 mass and with the magnitude of the cosine of the K ∗(892)0 helicity angle larger than 0.4.
PB Springer
SN 1029-8479
YR 2016
FD 2016
LK http://hdl.handle.net/10347/22446
UL http://hdl.handle.net/10347/22446
LA eng
NO Aaij, R., Abellán Beteta, C., Adeva, B. et al. Model-independent measurement of the CKM angle γ using B0 → DK∗0 decays with D → K0S π + π − and K0SK+K−. J. High Energ. Phys. 2016, 131 (2016). https://doi.org/10.1007/JHEP06(2016)131
DS Minerva
RD 30 abr 2026