Test of lepton universality with B0 → K*0l+l- decays

被引：5

作者：

Aaij, R. ^{[42
]}

Adeva, B. ^{[41
]}

Adinolfi, M. ^{[50
]}

Ajaltouni, Z. ^{[5
]}

Akar, S. ^{[61
]}

Albrecht, J. ^{[10
]}

Alessio, F. ^{[42
]}

Alexander, M. ^{[55
]}

Ali, S. ^{[45
]}

Alkhazov, G. ^{[33
]}

Cartelle, P. Alvarez ^{[57
]}

Alves, A. A., Jr. ^{[61
]}

Amato, S. ^{[2
]}

Amerio, S. ^{[25
]}

Amhis, Y. ^{[7
]}

An, L. ^{[3
]}

Anderlini, L. ^{[19
]}

Andreassi, G. ^{[43
]}

Andreotti, M. ^{[17
,18
,80
]}

Andrews, J. E. ^{[62
]}

Appleby, R. B. ^{[58
]}

Archilli, F. ^{[45
]}

d'Argent, P. ^{[12
]}

Romeu, J. Arnau ^{[6
]}

Artamonov, A. ^{[39
]}

Artuso, M. ^{[63
]}

Aslanides, E. ^{[6
]}

Auriemma, G. ^{[28
]}

Baalouch, M. ^{[5
]}

Babuschkin, I. ^{[58
]}

Bachmann, S. ^{[12
]}

Back, J. J. ^{[52
]}

Badalov, A. ^{[40
]}

Baesso, C. ^{[64
]}

Baker, S. ^{[57
]}

Balagura, V. ^{[7
,76
]}

Baldini, W. ^{[17
,18
]}

Baranov, A. ^{[37
]}

Barlow, R. J. ^{[58
]}

Barschel, C. ^{[42
]}

Barsuk, S. ^{[7
]}

Barter, W. ^{[58
]}

Baryshnikov, F. ^{[34
]}

Baszczyk, M. ^{[29
,84
]}

Batozskaya, V. ^{[31
]}

Battista, V. ^{[43
]}

Bay, A. ^{[43
]}

Beaucourt, L. ^{[4
]}

Beddow, J. ^{[55
]}

Bedeschi, F. ^{[26
]}

机构：

[1] CBPF, Rio De Janeiro, Brazil

[2] Univ Fed Rio de Janeiro, Rio De Janeiro, Brazil

[3] Tsinghua Univ, Ctr High Energy Phys, Beijing, Peoples R China

[4] Univ Savoie Mont Blanc, CNRS, LAPP, IN2P3, Annecy Le Vieux, France

[5] Univ Blaise Pascal, CNRS, IN2P3, Clermont Univ,LPC, Clermont Ferrand, France

[6] Aix Marseille Univ, CNRS, CPPM, IN2P3, Marseille, France

[7] Univ Paris Sud, CNRS, LAL, IN2P3, Orsay, France

[8] Univ Paris 06, Univ Paris Diderot, CNRS IN2P3, LPNHE, 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, Phys Inst, 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] Univ Ferrara, Ferrara, Italy

[18] INFN, Ferrara, Italy

[19] Sez INFN Firenze, Florence, Italy

[20] Lab Nazl INFN Frascati, Frascati, Italy

[21] Sez INFN Genova, Genoa, Italy

[22] Univ Milano Bicocca, Milan, Italy

[23] INFN, Milan, Italy

[24] Sez Milano, Milan, Italy

[25] Sez INFN Padova, Padua, Italy

[26] Sez INFN Pisa, Pisa, Italy

[27] Sez INFN Roma Tor Vergata, Rome, Italy

[28] Sez INFN Roma La Sapienza, Rome, Italy

[29] Nucl Phys Polish Acad Sci, Henryk Niewodniczanski Inst, Krakow, Poland

[30] AGH Univ Sci & Technol, Fac Phys & Appl Comp Sci, Krakow, Poland

[31] Natl Ctr Nucl Res NCBJ, Warsaw, Poland

[32] Horia Hulubei Natl Inst Phys & Nucl Engn, Bucharest, Romania

[33] PNPI, Gatchina, Russia

[34] ITEP, Moscow, Russia

[35] Moscow State Univ SINP MSU, Inst Nucl Phys, Moscow, Russia

[36] Russian Acad Sci INR RAN, Inst Nucl Res, Moscow, Russia

[37] Yandex Sch Data Anal, Moscow, Russia

[38] Budker Inst Nucl Phys SB RAS, Novosibirsk, Russia

[39] IHEP, Protvino, Russia

[40] Univ Barcelona, ICCUB, Barcelona, Spain

[41] Univ Santiago Compostela, Santiago De Compostela, Spain

[42] European Org Nucl Res CERN, Geneva, Switzerland

[43] Ecole Polytech Fed Lausanne, Inst Phys, Lausanne, Switzerland

[44] Univ Zurich, Phys Inst, Zurich, Switzerland

[45] Nikhef Natl Inst Subat Phys, Amsterdam, Netherlands

[46] Vrije Univ Amsterdam, Amsterdam, Netherlands

[47] NSC KIPT, Kharkov, 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

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2017年 / 08期

关键词：

B physics; Branching fraction; Hadron-Hadron scattering (experiments); Rare decay; TOOL;

D O I：

10.1007/JHEP08(2017)055

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：

A test of lepton universality, performed by measuring the ratio of the branching fractions of the B-0 -> K*(0)mu(+) mu(-) and B-0 -> K*e(+)e(-) decays, R-K*0, is presented. The K*(0) meson is reconstructed in the final state K+pi(-), which is required to have an invariant mass within 100 MeV/c(2) of the known K*(892)(0) mass. The analysis is performed using proton-proton collision data, corresponding to an integrated luminosity of about 3 fb(-1), collected by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. The ratio is measured in two regions of the dilepton invariant mass squared, q(2), to be R-K*0 - {0.66(-0.007)(+0.11)(stat) +/- 0.03(syst) for 0.045 < q(2) < GeV2/c(4), 0.69(-0.07)(+0.11)(stat) +/- 0.05(syst) for 1.1 < q(2) < 6.0 GeV2/c(4). The corresponding 95.4% confidence level intervals are [0.52, 0.89] and [0.53, 0.94]. The results, which represent the most precise measurements of R-K*0 to date, are compatible with the Standard Model expectations at the level of 2.1-2.3 and 2.4-2.5 standard deviations in the two q(2) regions, respectively.

引用

页数：31

共 50 条

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Afsharnia, H.
Agapopoulou, C.
Aidala, C. A.
Aiola, S.
Ajaltouni, Z.
Akar, S.
Akiba, K.
Albrecht, J.
Alessio, F.
Alexander, M.
Alfonso Albero, A.
Aliouche, Z.
Cartelle, P. Alvarez
Amalric, R.
Amato, S.
Amey, J. L.
Amhis, Y.
An, L.
Anderlini, L.
Andersson, M.
Andreianov, A.
Andreotti, M.
Andreou, D.
Ao, D.
Archilli, F.
Artamonov, A.
Artuso, M.
Aslanides, E.
Atzeni, M.
Audurier, B.
Bachmann, S.
Bachmayer, M.
Back, J. J.
Bailly-reyre, A.
Baladron Rodriguez, P.
Balagura, V.
Baldini, W.
Baptista de Souza Leite, J.
Barbetti, M.
Barlow, R. J.
Barsuk, S.
Barter, W.
Bartolini, M.
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A. S. W. Abdelmotteleb
C. Abellan Beteta
F. Abudinén
T. Ackernley
B. Adeva
M. Adinolfi
H. Afsharnia
C. Agapopoulou
C. A. Aidala
S. Aiola
Z. Ajaltouni
S. Akar
K. Akiba
J. Albrecht
F. Alessio
M. Alexander
A. Alfonso Albero
Z. Aliouche
P. Alvarez Cartelle
R. Amalric
S. Amato
J. L. Amey
Y. Amhis
L. An
L. Anderlini
M. Andersson
A. Andreianov
M. Andreotti
D. Andreou
D. Ao
F. Archilli
A. Artamonov
M. Artuso
E. Aslanides
M. Atzeni
B. Audurier
S. Bachmann
M. Bachmayer
J. J. Back
A. Bailly-reyre
P. Baladron Rodriguez
V. Balagura
W. Baldini
J. Baptista de Souza Leite
M. Barbetti
R. J. Barlow
S. Barsuk
W. Barter
M. Bartolini
Journal of High Energy Physics, 2023

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