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J.Ursov, E.Usachov, A.Ustyuzhanin, A.Uwer, U.Vagner, A.Vagnoni, V.Valassi, A.Valenti, G.Valls Canudas, N.van Beuzekom, M.Van Dijk, M.Van Hecke, H.van Herwijnen, E.VanHulse, C. B.van Veghel, M.Vazquez Gomez, R.Vazquez Regueiro, P.Sierra, C. VazquezVecchi, S.Velthuis, J. J.Veltri, M.Venkateswaran, A.Veronesi, M.Vesterinen, M.Vieira, D.Vieites Diaz, M.Viemann, H.Vilasis-Cardona, X.Figueras, E. VilellaVincent, P.Vitali, G.Vollhardt, A.Vom Bruch, D.Vorobyev, A.Vorobyev, V.Voropaev, N.Waldi, R.Walsh, J.Wang, C.Wang, J.Wang, M.Wang, R.Wang, Y.Wang, Z.Wark, H. M.Watson, N. K.Weber, S. G.Websdale, D.Weisser, C.Westhenry, B. D. C.White, D. J.Whitehead, M.Wiedner, D.Wilkinson, G.Wilkinson, M.Williams, IWilliams, M.Williams, M. R. J.Wilson, F. F.Wislicki, W.Witek, M.Witola, L.Wormser, G.Wotton, S. A.Wu, H.Wyllie, K.Xiang, Z.Xiao, D.Xie, Y.Xu, A.Xu, J.Xu, L.Xu, M.Xu, Q.Xu, Z.Yang, D.Yang, Y.Yang, Z.Yao, Y.Yeomans, L. E.Yin, H.Yu, J.Yuan, X.Yushchenko, O.Zaffaroni, E.Zarebski, K. A.Zavertyaev, M.Zdybal, M.Zenaiev, O.Zeng, M.Zhang, D.Zhang, L.Zhang, S.Zhang, Y.Zhelezov, A.Zheng, Y.Zhou, X.Zhou, Y.Zhu, X.Zhukov, VZonneveld, J. B.Zucchelli, S.Zuliani, D.Zunica, G.2021-12-042021-12-042021-12-042021-11-0110.1140/epjc/s10052-021-09711-7https://infoscience.epfl.ch/handle/20.500.14299/183683WOS:000722225100003A flavour-tagged time-dependent angular analysis of B-s(0) -> J/Psi phi decays is presented where the J/Psi meson is reconstructed through its decay to an e(+)e(-) pair. The analysis uses a sample of pp collision data recorded with the LHCb experiment at centre-of-mass energies of 7 and 8TeV, corresponding to an integrated luminosity of 3 fb(-1). The CP-violating phase and lifetime parameters of the B-s(0) s system are measured to be phi(s) = 0.00 +/- 0.28 +/- 0.07 rad, Delta Gamma(s) = 0.115 +/- 0.045 +/- 0.011 ps(-1) and Delta Gamma(s) = 0.608 +/- 0.018 +/- 0.012 ps(-1) where the first uncertainty is statistical and the second systematic. This is the first time that CP-violating parameters are measured in the B-s(0) -> J/Psi phi decay with an e+e- pair in the final state. The results are consistent with previous measurements in other channels and with the Standard Model predictions.Physics, Particles & FieldsPhysicsFirst measurement of the CP-violating phase in B-s(0) -> J/Psi (-> e(+) e(-))phi decaystext::journal::journal article::research article