Strong constraints on the b → sγ photon polarisation from B0 → K*0e+e- decays

被引:30
作者
Aaij, R. [28 ]
Beteta, C. Abellan [46 ]
Adeva, B. [43 ]
Adinolfi, M. [50 ]
Aidala, C. A. [77 ]
Ajaltouni, Z. [6 ]
Akar, S. [61 ]
Albicocco, P. [19 ]
Albrecht, J. [11 ]
Alessio, F. [44 ]
Alexander, M. [55 ]
Albero, A. Alfonso [42 ]
Alkhazov, G. [34 ]
Cartelle, P. Alvarez [57 ]
Alves, A. A., Jr. [43 ]
Amato, S. [2 ]
Amerio, S. [24 ]
Amhis, Y. [8 ]
An, L. [18 ]
Anderlini, L. [18 ]
Andreassi, G. [45 ]
Andreotti, M. [17 ]
Andrews, J. E. [62 ]
Archilli, F. [28 ]
d'Argent, P. [13 ]
Romeu, J. Arnau [7 ]
Artamonov, A. [41 ]
Artuso, M. [63 ]
Arzymatov, K. [38 ]
Aslanides, E. [7 ]
Atzeni, M. [46 ]
Audurier, B. [23 ]
Bachmann, S. [13 ]
Back, J. J. [52 ]
Baker, S. [57 ]
Balagura, V. [8 ,80 ]
Baldini, W. [17 ]
Baranov, A. [38 ]
Barlow, R. J. [58 ]
Barrand, G. C. [8 ]
Barsuk, S. [8 ]
Barter, W. [58 ]
Bartolini, M. [20 ]
baryshnikov, F. [74 ]
Batozskaya, V. [32 ]
Batsukh, B. [63 ]
Battig, A. [11 ]
Battista, V. [45 ]
Bay, A. [45 ]
Beddow, J. [55 ]
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] Ihep, Beijing, Peoples R China
[5] Univ Savoie Mont Blanc, Univ Grenoble Alpes, CNRS, IN2P3,LAPP, Annecy, France
[6] Univ Blaise Pascal, Clermont Univ, LPC, CNRS,IN2P3, Clermont Ferrand, France
[7] Aix Marseille Univ, CPPM, CNRS, IN2P3, Marseille, France
[8] Univ Paris Saclay, Univ Paris Sud, LAL, CNRS,IN2P3, Orsay, France
[9] Sorbonne Univ, Paris Diderot Sorbonne Paris Cite, LPNHE, CNRS,IN2P3, Paris, France
[10] Rhein Westfal TH Aachen, Phys Inst 1, Aachen, Germany
[11] Tech Univ Dortmund, Fak Phys, Dortmund, Germany
[12] Max Planck Inst Kernphys, Heidelberg, Germany
[13] Heidelberg Univ, Phys Inst, Heidelberg, Germany
[14] Univ Coll Dublin, Sch Phys, Dublin, Ireland
[15] INFN, Sez Bari, Bari, Italy
[16] INFN, Sez Bologna, Bologna, Italy
[17] INFN, Sez Ferrara, Ferrara, Italy
[18] INFN, Sez Firenze, Florence, Italy
[19] INFN, Lab Nazl Frascati, Frascati, Italy
[20] INFN, Sez Genova, Genoa, Italy
[21] INFN, Sez Milano Bicocca, Milan, Italy
[22] INFN, Sez Milano, Milan, Italy
[23] INFN, Sez Cagliari, Monserrato, Italy
[24] INFN, Sez Padova, Padua, Italy
[25] INFN, Sez Pisa, Pisa, Italy
[26] INFN, Sez Roma Tor Vergata, Rome, Italy
[27] INFN, Sez Roma La Sapienza, Rome, Italy
[28] Nikhef Natl Inst Subat Phys, Amsterdam, Netherlands
[29] Vrije Univ Amsterdam, Amsterdam, Netherlands
[30] Polish Acad Sci, Henryk Niewodniczanski Inst Nucl Phys, Krakow, Poland
[31] AGH Univ Sci & Technol, Fac Phys & Appl Comp Sci, Krakow, Poland
[32] Natl Ctr Nucl Res NCBJ, Warsaw, Poland
[33] Horia Hulubei Natl Inst Phys & Nucl Engn, Bucharest, Romania
[34] PNPI, Gatchina, Russia
[35] ITEP, Moscow, Russia
[36] Moscow State Univ SINP MSU, Inst Nucl Phys, Moscow, Russia
[37] Russian Acad Sci, Inst Nucl Res, Moscow, Russia
[38] Yandex Sch Data Anal, Moscow, Russia
[39] Natl Res Univ Higher Sch Econ, Moscow, Russia
[40] RAS, SB, Budker Inst Nucl Phys, Novosibirsk, Russia
[41] IHEP, Protvino, Russia
[42] Univ Barcelona, ICCUB, Barcelona, Spain
[43] Univ Santiago de Compostela, IGFAE, Santiago De Compostela, Spain
[44] European Org Nucl Res CERN, Geneva, Switzerland
[45] Ecole Polytech Fed Lausanne, Inst Phys, Lausanne, Switzerland
[46] Univ Zurich, Phys Inst, Zurich, Switzerland
[47] NSC KIPT, Kharkiv, Ukraine
[48] Natl Acad Sci KINR, Inst Nucl Res, Kiev, Ukraine
[49] Univ Birmingham, Birmingham, W Midlands, England
[50] Univ Bristol, HH Wills Phys Lab, Bristol, Avon, England
关键词
Rare decay; Flavour Changing Neutral Currents; Polarization; B physics; Hadron-Hadron scattering (experiments); ASYMMETRIES;
D O I
10.1007/JHEP12(2020)081
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
An angular analysis of the B-0 -> K*(0)e(+)e(-) decay is performed using a data sample corresponding to an integrated luminosity of 9 fb(-1) of pp collisions collected with the LHCb experiment. The analysis is conducted in the very low dielectron mass squared (q(2)) interval between 0.0008 and 0.257 GeV2, where the rate is dominated by the B-0 -> K*(0)gamma transition with a virtual photon. The fraction of longitudinal polarisation of the K*(0) meson, F-L, is measured to be F-L = (4.4 +/- 2.6 +/- 1.4)%, where the first uncertainty is statistical and the second systematic. The A(T)(Re) observable, which is related to the lepton forward-backward asymmetry, is measured to be A(T)(Re) = -0.06 +/- 0.08 +/- 0.02. The A(T)((2)) and A(T)(Im) transverse asymmetries, which are sensitive to the virtual photon polarisation, are found to be A(T)((2)) = 0.11 +/- 0.10 +/- 0.02 and A(T)(Im) = 0.02 +/- 0.10 +/- 0.01. The results are consistent with Standard Model predictions and provide the world's best constraint on the b -> s gamma photon polarisation.
引用
收藏
页数:25
相关论文
共 50 条
  • [31] Searches for rare Bs0 and B0 decays into four muons
    Aaij, R.
    Abdelmotteleb, A. S. W.
    Beteta, C. Abellan
    Abudinen, F.
    Ackernley, T.
    Adeva, B.
    Adinolfi, M.
    Afsharnia, H.
    Agapopoulou, C.
    Aidala, C. A.
    Aiola, S.
    Ajaltouni, Z.
    Akar, S.
    Albrecht, J.
    Alessio, F.
    Alexander, M.
    Alfonso Albero, A.
    Aliouche, Z.
    Alkhazov, G.
    Cartelle, P. Alvarez
    Amato, S.
    Amey, J. L.
    Amhis, Y.
    An, L.
    Anderlini, L.
    Andersson, M.
    Andreianov, A.
    Andreotti, M.
    Archilli, F.
    Artamonov, A.
    Artuso, M.
    Arzymatov, K.
    Aslanides, E.
    Atzeni, M.
    Audurier, B.
    Bachmann, S.
    Bachmayer, M.
    Back, J. J.
    Baladron Rodriguez, P.
    Balagura, V
    Baldini, W.
    Leite, J. Baptista
    Barbetti, M.
    Barlow, R. J.
    Barsuk, S.
    Barter, W.
    Bartolini, M.
    Baryshnikov, F.
    Basels, J. M.
    Bashir, S.
    JOURNAL OF HIGH ENERGY PHYSICS, 2022, (03):
  • [32] Measurement of the ratio of branching fractions of the decays Λb0→ ψ(2S) Λ and Λb0→ J/ψΛ
    Aaij, R.
    Adeva, B.
    Adinolfi, M.
    Ajaltouni, Z.
    Akar, S.
    Albrecht, J.
    Alessio, F.
    Alexander, M.
    Alfonso Albero, A.
    Ali, S.
    Alkhazov, G.
    Cartelle, P. Alvarez
    Alves, A. A., Jr.
    Amato, S.
    Amerio, S.
    Amhis, Y.
    An, L.
    Anderlini, L.
    Andreassi, G.
    Andreotti, M.
    Andrews, J. E.
    Appleby, R. B.
    Archilli, F.
    Romeu, J. Arnau
    Artamonov, A.
    Artuso, M.
    Aslanides, E.
    Atzeni, M.
    Auriemma, G.
    Baalouch, M.
    Babuschkin, I.
    Bachmann, S.
    Back, J. J.
    Badalov, A.
    Baesso, C.
    Baker, S.
    Balagura, V.
    Baldini, W.
    Baranov, A.
    Barlow, R. J.
    Barschel, C.
    Barsuk, S.
    Barter, W.
    Baryshnikov, F.
    Batozskaya, V.
    Battista, V.
    Bay, A.
    Beaucourt, L.
    Beddow, J.
    Bedeschi, F.
    JOURNAL OF HIGH ENERGY PHYSICS, 2019, (03):
  • [33] Measurement of the ratio of branching fractions of the decays Λb0 → ψ(2S)Λ and Λb0 → J/ψΛ
    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
    S. Amato
    S. Amerio
    Y. Amhis
    L. An
    L. Anderlini
    G. Andreassi
    M. Andreotti
    J. E. Andrews
    R. B. Appleby
    F. Archilli
    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
    Journal of High Energy Physics, 2019
  • [34] Differential branching fraction and angular analysis of the decay B0 → K*0μ+μ-
    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.
    Aquines Gutierrez, O.
    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.
    Bencivenni, G.
    Benson, S.
    Benton, J.
    Berezhnoy, A.
    Bernet, R.
    JOURNAL OF HIGH ENERGY PHYSICS, 2013, (08):
  • [35] Measurement of time-dependent CP violation in B0 - η′K0 decays
    Santelj, L.
    Yusa, Y.
    Abdesselam, A.
    Adachi, I.
    Aihara, H.
    Al Said, S.
    Asner, D. M.
    Aulchenko, V.
    Aushev, T.
    Ayad, R.
    Bahinipati, S.
    Bakich, A. M.
    Bansalu, V.
    Bhardwaj, V.
    Bhuyan, B.
    Bondar, A.
    Bonvicini, G.
    Bozek, A.
    Bracko, M.
    Browder, T. E.
    Cervenkov, D. T.
    Chekelian, V.
    Chen, A.
    Cheon, B. G.
    Chilikin, K.
    Cho, K.
    Chobanova, V.
    Choi, Y.
    Cinabro, D.
    Dalseno, J.
    Danilov, M.
    Dolezal, Z.
    Drasal, Z.
    Drutskoy, A.
    Eidelman, S.
    Farhat, H.
    Fast, J. E.
    Ferber, T.
    Frost, O.
    Gaur, V.
    Gabyshev, N.
    Ganguly, S.
    Garmash, A.
    Gillard, R.
    Glattauer, R.
    Goh, Y. M.
    Golob, B.
    Haba, J.
    Hara, K.
    Hayasaka, K.
    JOURNAL OF HIGH ENERGY PHYSICS, 2014, (10):
  • [36] Observation of Λb0 → D+pπ-π- and Λb0 → D*+pπ-π- decays
    Aaij, R.
    Abdelmotteleb, A. S. W.
    Beteta, C. Abellan
    Abudinen, F.
    Ackernley, T.
    Adeva, B.
    Adinolfi, M.
    Afsharnia, H.
    Agapopoulou, C.
    Aidala, C. A.
    Aiola, S.
    Ajaltouni, Z.
    Akar, S.
    Albrecht, J.
    Alessio, F.
    Alexander, M.
    Alfonso Albero, A.
    Aliouche, Z.
    Alkhazov, G.
    Cartelle, P. Alvarez
    Amato, S.
    Amey, J. L.
    Amhis, Y.
    An, L.
    Anderlini, L.
    Andersson, M.
    Andreianov, A.
    Andreotti, M.
    Archilli, F.
    Artamonov, A.
    Artuso, M.
    Arzymatov, K.
    Aslanides, E.
    Atzeni, M.
    Audurier, B.
    Bachmann, S.
    Bachmayer, M.
    Back, J. J.
    Baladron Rodriguez, P.
    Balagura, V
    Baldini, W.
    Leite, J. Baptista de Souza
    Barbetti, M.
    Barlow, R. J.
    Barsuk, S.
    Barter, W.
    Bartolini, M.
    Baryshnikov, F.
    Basels, J. M.
    Bashir, S.
    JOURNAL OF HIGH ENERGY PHYSICS, 2022, (03):
  • [37] Measurement of CP violation in B0 → J/ψKS0 and B0 → ψ(2S)KS0 decays
    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
    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
    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
    Journal of High Energy Physics, 2017
  • [38] Measurement of CP violation in B0 → J/ψ KS0 and B0 → ψ(2S) KS0 decays
    Aaij, R.
    Adeva, B.
    Adinolfi, M.
    Ajaltouni, Z.
    Akar, S.
    Albrecht, J.
    Alessio, F.
    Alexander, M.
    Albero, A. Alfonso
    Ali, S.
    Alkhazov, G.
    Cartelle, P. Alvarez
    Alves, A. A., Jr.
    Amato, S.
    Amerio, S.
    Amhis, Y.
    An, L.
    Anderlini, L.
    Andreassi, G.
    Andreotti, M.
    Andrews, J. E.
    Appleby, R. B.
    Archilli, F.
    d'Argent, P.
    Romeu, J. Arnau
    Artamonov, A.
    Artuso, M.
    Aslanides, E.
    Auriemma, G.
    Baalouch, M.
    Babuschkin, I.
    Bachmann, S.
    Back, J. J.
    Badalov, A.
    Baesso, C.
    Baker, S.
    Balagura, V.
    Baldini, W.
    Baranov, A.
    Barlow, R. J.
    Barschel, C.
    Barsuk, S.
    Barter, W.
    Baryshnikov, F.
    Batozskaya, V.
    Battista, V.
    Bay, A.
    Beaucourt, L.
    Beddow, J.
    Bedeschi, F.
    JOURNAL OF HIGH ENERGY PHYSICS, 2017, (11):
  • [39] Differential branching fraction and angular analysis of Λb0 → Λμ+μ− decays
    R. Aaij
    B. Adeva
    M. Adinolfi
    A. Affolder
    Z. Ajaltouni
    S. Akar
    J. Albrecht
    F. Alessio
    M. Alexander
    S. Ali
    G. Alkhazov
    P. Alvarez Cartelle
    A. A. Alves
    S. Amato
    S. Amerio
    Y. Amhis
    L. An
    L. Anderlini
    J. Anderson
    M. Andreotti
    J. E. Andrews
    R. B. Appleby
    O. Aquines Gutierrez
    F. Archilli
    A. Artamonov
    M. Artuso
    E. Aslanides
    G. Auriemma
    M. Baalouch
    S. Bachmann
    J. J. Back
    A. Badalov
    C. Baesso
    W. Baldini
    R. J. Barlow
    C. Barschel
    S. Barsuk
    W. Barter
    V. Batozskaya
    V. Battista
    A. Bay
    L. Beaucourt
    J. Beddow
    F. Bedeschi
    I. Bediaga
    L. J. Bel
    I. Belyaev
    E. Ben-Haim
    G. Bencivenni
    S. Benson
    Journal of High Energy Physics, 2015
  • [40] Differential branching fraction and angular analysis of Λb0 → Λμ+μ- decays
    Aaij, R.
    Adeva, B.
    Adinolfi, M.
    Affolder, A.
    Ajaltouni, Z.
    Akar, S.
    Albrecht, J.
    Alessio, F.
    Alexander, M.
    Ali, S.
    Alkhazov, G.
    Cartelle, P. Alvarez
    Alves, A. A.
    Amato, S.
    Amerio, S.
    Amhis, Y.
    An, L.
    Anderlini, L.
    Anderson, J.
    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.
    Bel, L. J.
    Belyaev, I.
    Ben-Haim, E.
    Bencivenni, G.
    Benson, S.
    JOURNAL OF HIGH ENERGY PHYSICS, 2015, (06):