Measurement of CP observables in B ± → DK * ± decays using two- and four-body D final states

R. Aaij, B. Adeva,M. Adinolfi,Z. Ajaltouni,S. Akar,J. Albrecht, F. Alessio, M. Alexander,A. Alfonso Albero,S. Ali,G. Alkhazov,P. Alvarez Cartelle,A. A. Alves Jr,S. Amato,S. Amerio, Y. Amhis, L. An, L. Anderlini, G. Andreassi, M. Andreotti,J. E. Andrews,R. B. Appleby,F. Archilli,P. d’Argent,J. Arnau Romeu,A. Artamonov,M. Artuso,E. Aslanides,M. Atzeni,G. Auriemma,M. Baalouch,I. Babuschkin,S. Bachmann,J. J. Back,A. Badalov,C. Baesso,S. Baker,V. Balagura,W. Baldini,A. Baranov,R. J. Barlow,C. Barschel,S. Barsuk,W. Barter,F. Baryshnikov, V. Batozskaya, V. Battista, A. Bay,L. Beaucourt,J. Beddow, F. Bedeschi, I. Bediaga, A. Beiter, L. J. Bel,N. Beliy,V. Bellee, N. Belloli, K. Belous, I. Belyaev, E. Ben-Haim, G. Bencivenni, S. Benson,S. Beranek,A. Berezhnoy,R. Bernet, D. Berninghoff, E. Bertholet, A. Bertolin,C. Betancourt,F. Betti,M.-O. Bettler,M. van Beuzekom,Ia. Bezshyiko,S. Bifani,P. Billoir, A. Birnkraut, A. Bizzeti,M. Bjørn,T. Blake,F. Blanc,S. Blusk,V. Bocci,T. Boettcher,A. Bondar,N. 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Hutchcroft, P. Ibis, M. Idzik, P. Ilten, R. Jacobsson, J. Jalocha, E. Jans,A. Jawahery,F. Jiang,M. John,D. Johnson,C. R. Jones,C. Joram,B. Jost,N. Jurik,S. Kandybei,M. Karacson,J. M. Kariuki,S. Karodia,N. Kazeev, M. Kecke, F. Keizer,M. Kelsey,M. Kenzie,T. Ketel,E. Khairullin, B. Khanji, C. Khurewathanakul,T. Kirn,S. Klaver,K. Klimaszewski,T. Klimkovich,S. Koliiev,M. Kolpin,I. Komarov,R. Kopecna, P. Koppenburg, A. Kosmyntseva,S. Kotriakhova,M. Kozeiha, L. Kravchuk, M. Kreps, F. Kress, P. Krokovny,F. Kruse,W. Krzemien,W. Kucewicz,M. Kucharczyk,V. Kudryavtsev,A. K. Kuonen,T. Kvaratskheliya, D. Lacarrere, G. Lafferty,A. Lai,G. Lanfranchi, C. Langenbruch,T. Latham,C. Lazzeroni,R. Le Gac,A. Leflat, J. Lefrançois,R. Lefèvre,F. Lemaitre,E. Lemos Cid,O. Leroy,T. Lesiak,B. Leverington, P.-R. Li,T. Li,Y. Li,Z. Li,T. Likhomanenko,R. Lindner,F. Lionetto,V. Lisovskyi,X. Liu,D. Loh,A. Loi,I. Longstaff,J. H. Lopes,D. Lucchesi,M. Lucio Martinez,H. Luo,A. Lupato, E. Luppi, O. Lupton, A. Lusiani,X. 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Journal of High Energy Physics（2017）

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摘要

Measurements of CP observables in B ± → DK *± decays are presented, where D denotes a superposition of D 0 and D^0 meson states. Decays of the D meson to K − π + , K − K + , π − π + , K − π + π − π + and π − π + π − π + are used and the K *± meson is reconstructed in the K S 0 π ± final state. This analysis uses a data sample of pp collisions collected with the LHCb experiment, corresponding to integrated luminosities of 1 fb −1 , 2 fb −1 and 1.8 fb −1 at centre-of-mass energies √(s)=7 TeV, 8 TeV and 13 TeV, respectively. The sensitivity of the results to the CKM angle γ is discussed.

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B physics,CKM angle gamma,CP violation,Hadron-Hadron scattering (experiments)

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