Bibcode
Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Brondolin, E.; Dragicevic, M.; Erö, J.; Flechl, M.; Friedl, M.; Frühwirth, R.; Ghete, V. M.; Hartl, C.; Hörmann, N.; Hrubec, J.; Jeitler, M.; Knünz, V.; König, A.; Krammer, M.; Krätschmer, I.; Liko, D.; Matsushita, T.; Mikulec, I.; Rabady, D.; Rahbaran, B.; Rohringer, H.; Schieck, J.; Schöfbeck, R.; Strauss, J.; Treberer-Treberspurg, W.; Waltenberger, W.; Wulz, C.-E.; Mossolov, V.; Shumeiko, N.; Suarez Gonzalez, J.; Alderweireldt, S.; Cornelis, T.; de Wolf, E. A.; Janssen, X.; Knutsson, A.; Lauwers, J.; Luyckx, S.; Ochesanu, S.; Rougny, R.; van de Klundert, M.; van Haevermaet, H.; van Mechelen, P.; van Remortel, N.; van Spilbeeck, A.; Abu Zeid, S.; Blekman, F.; D'Hondt, J.; Daci, N.; de Bruyn, I.; Deroover, K.; Heracleous, N.; Keaveney, J.; Lowette, S.; Moreels, L.; Olbrechts, A.; Python, Q.; Strom, D.; Tavernier, S.; van Doninck, W.; van Mulders, P.; van Onsem, G. P.; van Parijs, I.; Barria, P.; Brun, H.; Caillol, C.; Clerbaux, B.; de Lentdecker, G.; Delannoy, H.; Fasanella, G.; Favart, L.; Gay, A. P. R.; Grebenyuk, A.; Karapostoli, G.; Lenzi, T.; Léonard, A.; Maerschalk, T.; Marinov, A.; Perniè, L.; Randle-Conde, A.; Reis, T.; Seva, T.; Vander Velde, C.; Vanlaer, P.; Yonamine, R.; Zenoni, F.; Zhang, F.; Beernaert, K.; Benucci, L.; Cimmino, A.; Crucy, S.; Dobur, D.; Fagot, A.; Garcia, G. et al.
Referencia bibliográfica
Physics Letters B, Volume 757, p. 97-120.
Fecha de publicación:
6
2016
Número de citas
21
Número de citas referidas
18
Descripción
The CP-violating weak phase ϕs of the
Bs0 meson and the decay width difference
ΔΓs of the Bs0 light and
heavy mass eigenstates are measured with the CMS detector at the LHC
using a data sample of Bs0 → J / ψ ϕ
(1020) →μ+μ-K+K-
decays. The analysed data set corresponds to an integrated luminosity of
19.7fb-1 collected in pp collisions at a centre-of-mass
energy of 8TeV. A total of 49 200 reconstructed
Bs0 decays are used to extract the values of
ϕs and ΔΓs by performing a
time-dependent and flavour-tagged angular analysis of the
μ+μ-K+K- final state.
The weak phase is measured to be ϕs = - 0.075 ±
0.097 (stat) ± 0.031 (syst) rad, and the decay width difference
is ΔΓs = 0.095 ± 0.013 (stat) ±
0.007 (syst) ps-1.