The decays of Bs0 and anti-B0s mesons into the J/ψ K+ K− final state are studied in the K+ K− mass region above the ϕ(1020) meson in order to determine the resonant substructure and measure the CP-violating phase, ϕ_s, the decay width, Γ_s, and the width difference between light and heavy mass eigenstates, ΔΓ_s. A decay-time dependent amplitude analysis is employed. The data sample corresponds to an integrated luminosity of 3 fb^−1 produced in 7 and 8 TeV pp collisions at the LHC, collected by the LHCb experiment. The measurement determines ϕ_s = 119 ± 107 ± 34 mrad. A combination with previous LHCb measurements using similar decays into the J/ψ π+ π− and J/ψ ϕ(1020) final states gives ϕ_s = 1 ± 37 mrad, consistent with the Standard Model prediction.

Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., et al. (2017). Resonances and CP Violation in B0s and anti-B0s → J/ψ K+ K− Decays in the Mass Region Above the ϕ(1020). JOURNAL OF HIGH ENERGY PHYSICS, 2017(8), 0-27 [10.1007/JHEP08(2017)037].

Resonances and CP Violation in B0s and anti-B0s → J/ψ K+ K− Decays in the Mass Region Above the ϕ(1020)

BETTI, FEDERICO;Capriotti, L.;CARBONE, ANGELO;FERRARI, FABIO;GALLI, DOMENICO;MUSSINI, MANUEL;PATRIGNANI, CLAUDIA;PERAZZINI, STEFANO;VAGNONI, VINCENZO MARIA;ZUCCHELLI, STEFANO
2017

Abstract

The decays of Bs0 and anti-B0s mesons into the J/ψ K+ K− final state are studied in the K+ K− mass region above the ϕ(1020) meson in order to determine the resonant substructure and measure the CP-violating phase, ϕ_s, the decay width, Γ_s, and the width difference between light and heavy mass eigenstates, ΔΓ_s. A decay-time dependent amplitude analysis is employed. The data sample corresponds to an integrated luminosity of 3 fb^−1 produced in 7 and 8 TeV pp collisions at the LHC, collected by the LHCb experiment. The measurement determines ϕ_s = 119 ± 107 ± 34 mrad. A combination with previous LHCb measurements using similar decays into the J/ψ π+ π− and J/ψ ϕ(1020) final states gives ϕ_s = 1 ± 37 mrad, consistent with the Standard Model prediction.
2017
Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., et al. (2017). Resonances and CP Violation in B0s and anti-B0s → J/ψ K+ K− Decays in the Mass Region Above the ϕ(1020). JOURNAL OF HIGH ENERGY PHYSICS, 2017(8), 0-27 [10.1007/JHEP08(2017)037].
Aaij, R.; Adeva, B.; Adinolfi, M.; Ajaltouni, Z.; Akar, S.; Albrecht, J.; Alessio, F.; Alexander, M.; Ali, S.; Alkhazov, G.; Alvarez Cartelle, P.; Alv...espandi
File in questo prodotto:
File Dimensione Formato  
2017-AR-44-Resonances_and_CP_V_in_B0s_and_antiB0s_to_Jpsi_Kp_Km_Dec-JHEP.pdf

accesso aperto

Tipo: Versione (PDF) editoriale
Licenza: Licenza per Accesso Aperto. Creative Commons Attribuzione (CCBY)
Dimensione 1.17 MB
Formato Adobe PDF
1.17 MB Adobe PDF Visualizza/Apri

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/11585/609997
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 43
  • ???jsp.display-item.citation.isi??? 42
social impact