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), 1-30 [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;
B physics; CKM angle gamma; CP violation; Flavor physics; Hadron-Hadron Scattering; Nuclear and High Energy Physics
English
2014
2014
11
1
30
60
open
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), 1-30 [10.1007/JHEP11(2014)060].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/88962
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