Abstract: We report on measurements of the time-dependent CP violating observables in Bs0 → Ds∓K± decays using a dataset corresponding to 1.0 fb−1 of pp collisions recorded with the LHCb detector. We find the CP violating observables Cf = 0.53±0.25±0.04, AfΔΓ = 0.37 ± 0.42 ± 0.20, (Formula presented.), where the uncertainties are statistical and systematic, respectively. Using these observables together with a recent measurement of the Bs0 mixing phase −2βs leads to the first extraction of the CKM angle γ from Bs0 → Ds∓K± decays, finding γ = (115− 43+ 28)° modulo 180° at 68% CL, where the error contains both statistical and systematic uncertainties.[Figure not available: see fulltext.].

LHCb collaboration, N., Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., et al. (2014). Measurement of CP asymmetry in Bs0 → Ds∓ K± decays. JOURNAL OF HIGH ENERGY PHYSICS, 2014(11) [10.1007/JHEP11(2014)060].

Measurement of CP asymmetry in Bs0 → Ds∓ K± decays

Borsato, M;CALVI, MARTA;CASSINA, LORENZO;GOTTI, CLAUDIO;KHANJI, BASEM;KUCHARCZYK, MARCIN;Martinelli, M;
2014

Abstract

Abstract: We report on measurements of the time-dependent CP violating observables in Bs0 → Ds∓K± decays using a dataset corresponding to 1.0 fb−1 of pp collisions recorded with the LHCb detector. We find the CP violating observables Cf = 0.53±0.25±0.04, AfΔΓ = 0.37 ± 0.42 ± 0.20, (Formula presented.), where the uncertainties are statistical and systematic, respectively. Using these observables together with a recent measurement of the Bs0 mixing phase −2βs leads to the first extraction of the CKM angle γ from Bs0 → Ds∓K± decays, finding γ = (115− 43+ 28)° modulo 180° at 68% CL, where the error contains both statistical and systematic uncertainties.[Figure not available: see fulltext.].
Articolo in rivista - Articolo scientifico
B physics; CKM angle gamma; CP violation; Flavor physics; Hadron-Hadron Scattering; Nuclear and High Energy Physics
English
2014
2014
11
60
none
LHCb collaboration, N., Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., et al. (2014). Measurement of CP asymmetry in Bs0 → Ds∓ K± decays. JOURNAL OF HIGH ENERGY PHYSICS, 2014(11) [10.1007/JHEP11(2014)060].
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/88962
Citazioni
  • Scopus 17
  • ???jsp.display-item.citation.isi??? 19
Social impact