Observation of the Λb0 → Λφ decay

被引:18
作者
Aaij, R. [40 ]
Beteta, C. Abellan [42 ]
Adeva, B. [39 ]
Adinolfi, M. [48 ]
Ajaltouni, Z. [5 ]
Akar, S. [6 ]
Albrecht, J. [10 ]
Alessio, F. [40 ]
Alexander, M. [53 ]
Ali, S. [43 ]
Alkhazov, G. [31 ]
Cartelle, R. Alvarez [55 ]
Alves, A. A., Jr. [59 ]
Amato, S. [2 ]
Amerio, S. [23 ]
Amhis, Y. [7 ]
An, L. [3 ,41 ]
Anderlini, L. [18 ]
Andreassi, G. [41 ]
Andreotti, M. [17 ,77 ]
Andrews, J. E. [60 ]
Appleby, R. B. [56 ]
Gutierrez, O. Aquines [11 ]
Archilli, F. [40 ]
d'Argent, P. [12 ]
Artamonov, A. [37 ]
Artuso, M. [61 ]
Aslanides, E. [6 ]
Auriemma, G. [26 ,84 ]
Baalouch, M. [5 ]
Bachmann, S. [12 ]
Back, J. J. [50 ]
Badalov, A. [38 ]
Baesso, C. [62 ,92 ]
Baker, S. [55 ]
Baldini, W. [17 ]
Barlow, R. J. [56 ]
Barschel, C. [40 ]
Barsuk, S. [7 ]
Barter, W. [40 ]
Batozskaya, V. [29 ]
Battista, V. [41 ]
Bay, A. [41 ]
Beaucourt, L. [4 ]
Beddow, J. [53 ]
Bedeschi, F. [24 ]
Bediaga, I. [1 ]
Bel, L. J. [43 ]
Bellee, V. [41 ]
Belloli, N. [21 ,81 ]
机构
[1] CBPF, Rio De Janeiro, Brazil
[2] Univ Fed Rio de Janeiro UFRJ, Rio De Janeiro, Brazil
[3] Tsinghua Univ, Ctr High Energy Phys, Beijing, Peoples R China
[4] Univ Savoie Mt Blanc, LAPP, CNRS IN2P3, Annecy Le Vieux, France
[5] Univ Blaise Pascal, Clermont Univ, CNRS IN2P3, LPC, Clermont Ferrand, France
[6] Aix Marseille Univ, CPPM, CNRS IN2P3, Marseille, France
[7] Univ Paris 11, LAL, CNRS IN2P3, Orsay, France
[8] Univ Paris 06, LPNHE, Univ Paris Diderot, CNRS IN2P3, Paris, France
[9] Rhein Westfal TH Aachen, Phys Inst 1, Aachen, Germany
[10] Tech Univ Dortmund, Fak Phys, Dortmund, Germany
[11] MPIK, Heidelberg, Germany
[12] Heidelberg Univ, Inst Phys, Philosophenweg 12, Heidelberg, Germany
[13] Univ Coll Dublin, Sch Phys, Dublin, Ireland
[14] Sez INFN Bari, Bari, Italy
[15] Sez INFN Bologna, Bologna, Italy
[16] Sez INFN Cagliari, Cagliari, Italy
[17] Sez INFN Ferrara, Ferrara, Italy
[18] Sez INFN Firenze, Florence, Italy
[19] Ist Nazl Fis Nucl, Lab Nazl, Frascati, Italy
[20] Sez INFN Genova, Genoa, Italy
[21] Sez INFN Milano Bicocca, Milan, Italy
[22] Sez INFN Milano, Milan, Italy
[23] Sez INFN Padova, Padua, Italy
[24] Sez INFN Pisa, Pisa, Italy
[25] Sez INFN Roma Tor Vergata, Rome, Italy
[26] Sez INFN Roma La Sapienza, Rome, Italy
[27] Polish Acad Sci, Henryk Niewodniczanski Inst Nucl Phys, Krakow, Poland
[28] AGH Univ Sci & Technol, Fac Phys & Appl Comp Sci, Krakow, Poland
[29] Natl Ctr Nucl Res NCBJ, Warsaw, Poland
[30] Horia Hulubei Natl Inst Phys & Nucl Engn, Bucharest, Romania
[31] PNPI, Gatchina, Russia
[32] ITEP, Moscow, Russia
[33] Moscow State Univ SINP MSU, Inst Nucl Phys, Moscow, Russia
[34] Russian Acad Sci INR RAN, Inst Nucl Res, Moscow, Russia
[35] Budker Inst Nucl Phys SB RAS, Novosibirsk, Russia
[36] Novosibirsk State Univ, Novosibirsk, Russia
[37] IHEP, Protvino, Russia
[38] Univ Barcelona, Barcelona, Spain
[39] Univ Santiago de Compostela, Santiago De Compostela, Spain
[40] European Org Nucl Res CERN, Geneva, Switzerland
[41] Ecole Polytech Fed Lausanne, Lausanne, Switzerland
[42] Univ Zurich, Phys Inst, Zurich, Switzerland
[43] Nikhef Natl Inst Subatom Phys, Amsterdam, Netherlands
[44] Vrije Univ Amsterdam, Amsterdam, Netherlands
[45] NSC KIPT, Kharkov, Ukraine
[46] Natl Acad Sci KINR, Inst Nucl Res, Kiev, Ukraine
[47] Univ Birmingham, Birmingham, W Midlands, England
[48] Univ Bristol, HH Wills Phys Lab, Bristol, Avon, England
[49] Univ Cambridge, Cavendish Lab, Cambridge, England
[50] Univ Warwick, Dept Phys, Coventry, W Midlands, England
关键词
CP VIOLATION; TOOL;
D O I
10.1016/j.physletb.2016.05.077
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The Lambda(0)(b) -> Lambda phi decay is observed using data corresponding to an integrated luminosity of 3.0 fb(-1) recorded by the LHCb experiment. The decay proceeds at leading order via a b -> s<(s)double over bar>s loop transition and is therefore sensitive to the possible presence of particles beyond the Standard Model. A first observation is reported with a significance of 5.9 standard deviations. The value of the branching fraction is measured to be (5.18 +/- 1.04 +/- 0.35(-0.62)(+0.67)) x 10(-6), where the first uncertainty is statistical, the second is systematic, and the third is related to external inputs. Triple-product asymmetries are measured to be consistent with zero. (C) 2016 The Author. Published by Elsevier B.V.
引用
收藏
页码:282 / 292
页数:11
相关论文
共 40 条
  • [1] LHCb detector performance
    Aaij, R.
    Adeva, B.
    Adinolfi, M.
    Affolder, A.
    Ajaltouni, Z.
    Akar, S.
    Albrecht, J.
    Alessio, F.
    Alexander, M.
    Ali, S.
    Alkhazov, G.
    Alvarez Cartelle, P.
    Alves, A. A., Jr.
    Amato, S.
    Amerio, S.
    Amhis, Y.
    An, L.
    Anderlini, L.
    Anderson, J.
    Andreassen, R.
    Andreotti, M.
    Andrews, J. E.
    Appleby, R. B.
    Gutierrez, O. Aquines
    Archilli, F.
    Artamonov, A.
    Artuso, M.
    Aslanides, E.
    Auriemma, G.
    Baalouch, M.
    Bachmann, S.
    Back, J. J.
    Badalov, A.
    Baesso, C.
    Baldini, W.
    Barlow, R. J.
    Barschel, C.
    Barsuk, S.
    Barter, W.
    Batozskaya, V.
    Battista, V.
    Bay, A.
    Beaucourt, L.
    Beddow, J.
    Bedeschi, F.
    Bediaga, I.
    Belogurov, S.
    Belous, K.
    Belyaev, I.
    Ben-Haim, E.
    [J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS A, 2015, 30 (07):
  • [2] Measurement of the track reconstruction efficiency at LHCb
    Aaij, R.
    Adeva, B.
    Adinolfi, M.
    Affolder, A.
    Ajaltouni, Z.
    Akar, S.
    Albrecht, J.
    Alessio, F.
    Alexander, M.
    Ali, S.
    Alkhazov, G.
    Alvarez Cartelle, P.
    Alves, A. A., Jr.
    Amato, S.
    Amerio, S.
    Amhis, Y.
    An, L.
    Anderlini, L.
    Anderson, J.
    Andreassen, R.
    Andreotti, M.
    Andrews, J. E.
    Appleby, R. B.
    Gutierrez, O. Aquines
    Archilli, F.
    Artamonov, A.
    Artuso, M.
    Aslanides, E.
    Auriemma, G.
    Baalouch, M.
    Bachmann, S.
    Back, J. J.
    Badalov, A.
    Baldini, W.
    Barlow, R. J.
    Barschel, C.
    Barsuk, S.
    Barter, W.
    Batozskaya, V.
    Battista, V.
    Bay, A.
    Beaucourt, L.
    Beddow, J.
    Bedeschi, F.
    Bediaga, I.
    Belogurov, S.
    Belous, K.
    Belyaev, I.
    Ben-Haim, E.
    Bencivenni, G.
    [J]. JOURNAL OF INSTRUMENTATION, 2015, 10
  • [3] Measurement of CP violation in B0s →ΦΦ decays
    Aaij, R.
    Adeva, B.
    Adinolfi, M.
    Affolder, A.
    Ajaltouni, Z.
    Akar, S.
    Albrecht, J.
    Alessio, F.
    Alexander, M.
    Ali, S.
    Alkhazov, G.
    Alvarez Cartelle, P.
    Alves, A. A., Jr.
    Amato, S.
    Amerio, S.
    Amhis, Y.
    An, L.
    Anderlini, L.
    Anderson, J.
    Andreassen, R.
    Andreotti, M.
    Andrews, J. E.
    Appleby, R. B.
    Gutierrez, O. Aquines
    Archilli, F.
    Artamonov, A.
    Artuso, M.
    Aslanides, E.
    Auriemma, G.
    Baalouch, M.
    Bachmann, S.
    Back, J. J.
    Badalov, A.
    Balagura, V.
    Baldini, W.
    Barlow, R. J.
    Barschel, C.
    Barsuk, S.
    Barter, W.
    Batozskaya, V.
    Battista, V.
    Bay, A.
    Beaucourt, L.
    Beddow, J.
    Bedeschi, F.
    Bediaga, I.
    Belogurov, S.
    Belous, K.
    Belyaev, I.
    Ben-Haim, E.
    [J]. PHYSICAL REVIEW D, 2014, 90 (05)
  • [4] Study of the kinematic dependences of Λb0 production in pp collisions and a measurement of the Λb0 → Λc+π- branching fraction
    Aaij, R.
    Adeva, B.
    Adinolfi, M.
    Affolder, A.
    Ajaltouni, Z.
    Albrecht, J.
    Alessio, F.
    Alexander, M.
    Ali, S.
    Alkhazov, G.
    Alvarez Cartelle, P.
    Alves, A. A., Jr.
    Amato, S.
    Amerio, S.
    Amhis, Y.
    An, L.
    Anderlini, L.
    Anderson, J.
    Andreassen, R.
    Andreotti, M.
    Andrews, J. E.
    Appleby, R. B.
    Gutierrez, O. Aquines
    Archilli, F.
    Artamonov, A.
    Artuso, M.
    Aslanides, E.
    Auriemma, G.
    Baalouch, M.
    Bachmann, S.
    Back, J. J.
    Badalov, A.
    Balagura, V.
    Baldini, W.
    Barlow, R. J.
    Barschel, C.
    Barsuk, S.
    Barter, W.
    Batozskaya, V.
    Bauer, Th.
    Bay, A.
    Beddow, J.
    Bedeschi, F.
    Bediaga, I.
    Belogurov, S.
    Belous, K.
    Belyaev, I.
    Ben-Haim, E.
    Bencivenni, G.
    Benson, S.
    [J]. JOURNAL OF HIGH ENERGY PHYSICS, 2014, (08):
  • [5] Measurement of polarization amplitudes and CP asymmetries in B0 → φK*(892)0
    Aaij, R.
    Abba, A.
    Adeva, B.
    Adinolfi, M.
    Affolder, A.
    Ajaltouni, Z.
    Albrecht, J.
    Alessio, F.
    Alexander, M.
    Ali, S.
    Alkhazov, G.
    Alvarez Cartelle, P.
    Alves, A. A., Jr.
    Amato, S.
    Amerio, S.
    Amhis, Y.
    An, L.
    Anderlini, L.
    Anderson, J.
    Andreassen, R.
    Andreotti, M.
    Andrews, J. E.
    Appleby, R. B.
    Gutierrez, O. Aquines
    Archilli, F.
    Artamonov, A.
    Artuso, M.
    Aslanides, E.
    Auriemma, G.
    Baalouch, M.
    Bachmann, S.
    Back, J. J.
    Badalov, A.
    Balagura, V.
    Baldini, W.
    Barlow, R. J.
    Barschel, C.
    Barsuk, S.
    Barter, W.
    Batozskaya, V.
    Bauer, Th.
    Bay, A.
    Beddow, J.
    Bedeschi, F.
    Bediaga, I.
    Belogurov, S.
    Belous, K.
    Belyaev, I.
    Ben-Haim, E.
    Bencivenni, G.
    [J]. JOURNAL OF HIGH ENERGY PHYSICS, 2014, (05):
  • [6] Study of B(s)0 → Ks0h+h′- decays with first observation of Bs0 → Ks0K±π∓ and Bs0 → Ks0π+π-
    Aaij, R.
    Adeva, B.
    Adinolfi, M.
    Adrover, C.
    Affolder, A.
    Ajaltouni, Z.
    Albrecht, J.
    Alessio, F.
    Alexander, M.
    Ali, S.
    Alkhazov, G.
    Cartelle, P. Alvarez
    Alves, A. A., Jr.
    Amato, S.
    Amerio, S.
    Amhis, Y.
    Anderlini, L.
    Anderson, J.
    Andreassen, R.
    Andrews, J. E.
    Appleby, R. B.
    Gutierrez, O. Aquines
    Archilli, F.
    Artamonov, A.
    Artuso, M.
    Aslanides, E.
    Auriemma, G.
    Baalouch, M.
    Bachmann, S.
    Back, J. J.
    Baesso, C.
    Balagura, V.
    Baldini, W.
    Barlow, R. J.
    Barschel, C.
    Barsuk, S.
    Barter, W.
    Bauer, Th.
    Bay, A.
    Beddow, J.
    Bedeschi, F.
    Bediaga, I.
    Belogurov, S.
    Belous, K.
    Belyaev, I.
    Ben-Haim, E.
    Bencivenni, G.
    Benson, S.
    Benton, J.
    Berezhnoy, A.
    [J]. JOURNAL OF HIGH ENERGY PHYSICS, 2013, (10):
  • [7] Measurements of the Λb0 → J/ψ Λ decay amplitudes and the Λb0 polarisation in pp collisions at √s=7 TeV
    Aaij, R.
    Abellan Beteta, C.
    Adeva, B.
    Adinolfi, M.
    Adrover, C.
    Affolder, A.
    Ajaltouni, Z.
    Albrecht, J.
    Alessio, F.
    Alexander, M.
    Ali, S.
    Alkhazov, G.
    Alvarez Cartelle, P.
    Alves, A. A., Jr.
    Amato, S.
    Amerio, S.
    Amhis, Y.
    Anderlini, L.
    Anderson, J.
    Andreassen, R.
    Appleby, R. B.
    Gutierrez, O. Aquines
    Archilli, F.
    Artamonov, A.
    Artuso, M.
    Aslanides, E.
    Auriemma, G.
    Bachmann, S.
    Back, J. J.
    Baesso, C.
    Balagura, V.
    Baldini, W.
    Barlow, R. J.
    Barschel, C.
    Barsuk, S.
    Barter, W.
    Bauer, Th.
    Bay, A.
    Beddow, J.
    Bedeschi, F.
    Bediaga, I.
    Belogurov, S.
    Belous, K.
    Belyaev, I.
    Ben-Haim, E.
    Benayoun, M.
    Bencivenni, G.
    Benson, S.
    Benton, J.
    Berezhnoy, A.
    [J]. PHYSICS LETTERS B, 2013, 724 (1-3) : 27 - 35
  • [8] First Measurement of the CP-Violating Phase in Bs0 → φφ Decays
    Aaij, R.
    Abellan Beteta, C.
    Adeva, B.
    Adinolfi, M.
    Adrover, C.
    Affolder, A.
    Ajaltouni, Z.
    Albrecht, J.
    Alessio, F.
    Alexander, M.
    Ali, S.
    Alkhazov, G.
    Alvarez Cartelle, P.
    Alves, A. A., Jr.
    Amato, S.
    Amerio, S.
    Amhis, Y.
    Anderlini, L.
    Anderson, J.
    Andreassen, R.
    Appleby, R. B.
    Gutierrez, O. Aquines
    Archilli, F.
    Artamonov, A.
    Artuso, M.
    Aslanides, E.
    Auriemma, G.
    Bachmann, S.
    Back, J. J.
    Baesso, C.
    Balagura, V.
    Baldini, W.
    Barlow, R. J.
    Barschel, C.
    Barsuk, S.
    Barter, W.
    Bauer, Th.
    Bay, A.
    Beddow, J.
    Bedeschi, F.
    Bediaga, I.
    Belogurov, S.
    Belous, K.
    Belyaev, I.
    Ben-Haim, E.
    Benayoun, M.
    Bencivenni, G.
    Benson, S.
    Benton, J.
    Berezhnoy, A.
    [J]. PHYSICAL REVIEW LETTERS, 2013, 110 (24)
  • [9] Observation of CP violation in B± → D K± decays
    Aaij, R.
    Beteta, C. Abellan
    Adeva, B.
    Adinolfi, M.
    Adrover, C.
    Affolder, A.
    Ajaltouni, Z.
    Albrecht, J.
    Alessio, F.
    Alexander, M.
    Ali, S.
    Alkhazov, G.
    Alvarez Cartelle, P.
    Alves, A. A., Jr.
    Amato, S.
    Amhis, Y.
    Anderson, J.
    Appleby, R. B.
    Aquines Gutierrez, O.
    Archilli, F.
    Artamonov, A.
    Artuso, M.
    Aslanides, E.
    Auriemma, G.
    Bachmann, S.
    Back, J. J.
    Balagura, V.
    Baldini, W.
    Barlow, R. J.
    Barschel, C.
    Barsuk, S.
    Barter, W.
    Bates, A.
    Bauer, C.
    Bauer, Th.
    Bay, A.
    Bediaga, I.
    Belogurov, S.
    Belous, K.
    Belyaev, I.
    Ben-Haim, E.
    Benayoun, M.
    Bencivenni, G.
    Benson, S.
    Benton, J.
    Bernet, R.
    Bettler, M. -O
    van Beuzekom, M.
    Bien, A.
    Bifani, S.
    [J]. PHYSICS LETTERS B, 2012, 712 (03) : 203 - 212
  • [10] Measurement of time-dependent CP-violating asymmetries in B0→φKS0, K+K-KS0, and η′KS0 decays -: art. no. 261602
    Abe, K
    Abe, K
    Abe, T
    Adachi, I
    Aihara, H
    Akai, K
    Akatsu, M
    Asano, Y
    Aso, T
    Aushev, T
    Bahinipati, S
    Bakich, AM
    Ban, Y
    Banerjee, S
    Bedny, I
    Bizjak, I
    Bondar, A
    Bozek, A
    Bracko, M
    Brodzicka, J
    Browder, TE
    Chang, MC
    Chang, P
    Chao, Y
    Chen, KF
    Cheon, BG
    Chistov, R
    Choi, SK
    Choi, Y
    Choi, YK
    Chuvikov, A
    Danilov, M
    Dong, LY
    Eidelman, S
    Eiges, V
    Enari, Y
    Flanagan, J
    Fukunaga, C
    Furukawa, K
    Gabyshev, N
    Garmash, A
    Gershon, T
    Golob, B
    Guo, R
    Haba, J
    Hagner, C
    Hara, K
    Hara, T
    Hastings, NC
    Hayashii, H
    [J]. PHYSICAL REVIEW LETTERS, 2003, 91 (26)