@article{975c03605cb04be797f45ab6979bf179,
title = "First measurement of the CP-violating phase ϕsdd¯ in Bs 0 → (K + π −)(K − π +) decays",
abstract = "A flavour-tagged decay-time-dependent amplitude analysis of Bs 0 → (K+π−)(K−π+) decays is presented in the K±π∓ mass range from 750 to 1600MeV/c2. The analysis uses pp collision data collected with the LHCb detector at centre-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of 3.0 fb−1. Several quasi-two-body decay modes are considered, corresponding to K±π∓ combinations with spin 0, 1 and 2, which are dominated by the K0 *(800)0 and K0 *(1430)0, the K*(892)0 and the K2 *(1430)0 resonances, respectively. The longitudinal polarisation fraction for the Bs0→K∗(892)°K¯∗(892)0 decay is measured as fL = 0.208 ± 0.032 ± 0.046, where the first uncertainty is statistical and the second is systematic. The first measurement of the mixing-induced CP-violating phase, ϕsdd¯, in b→ dd¯ s transitions is performed, yielding a value of ϕsdd¯=−0.10±0.13(stat)±0.14 (syst) rad.",
keywords = "B physics, CP violation, Flavour Changing Neutral Currents, Hadron-Hadron scattering (experiments), Oscillation, DISTRIBUTIONS, PP COLLISIONS, PHYSICS, TOOL",
author = "{The LHCb Collaboration} and R. Aaij and B. Adeva and M. Adinolfi and Z. Ajaltouni and S. Akar and J. Albrecht and F. Alessio and M. Alexander and {Alfonso Albero}, A. and S. Ali and G. Alkhazov and {Alvarez Cartelle}, P. and Alves, {A. A.} and S. Amato and S. Amerio and Y. Amhis and L. An and L. Anderlini and G. Andreassi and M. Andreotti and Andrews, {J. E.} and Appleby, {R. B.} and F. Archilli and P. d{\textquoteright}Argent and {Arnau Romeu}, J. and A. Artamonov and M. Artuso and E. Aslanides and M. Atzeni and G. Auriemma and M. Baalouch and I. Babuschkin and S. Bachmann and Back, {J. J.} and A. Badalov and C. Baesso and S. Baker and V. Balagura and W. Baldini and A. Baranov and Barlow, {R. J.} and C. Barschel and S. Barsuk and W. Barter and F. Baryshnikov and A. Bondar and S. Eidelman and P. Krokovny and L. Shekhtman and V. Vorobyev",
year = "2018",
month = mar,
day = "1",
doi = "10.1007/JHEP03(2018)140",
language = "English",
volume = "2018",
journal = "Journal of High Energy Physics",
issn = "1029-8479",
publisher = "Springer US",
number = "3",
}