Measurement of the B0 → K*0 e+ e- branching fraction at low dilepton mass

被引：45

作者：

Aaij, R. ^{[41
]}

Beteta, C. Abellan ^{[36
]}

Adeva, B. ^{[37
]}

Adinolfi, M. ^{[47
]}

Adrover, C. ^{[6
]}

Affolder, A. ^{[53
]}

Ajaltouni, Z. ^{[5
]}

Albrecht, J. ^{[9
]}

Alessio, F. ^{[38
]}

Alexander, M. ^{[52
]}

Ali, S. ^{[41
]}

Alkhazov, G. ^{[29
]}

Cartelle, P. Alvarez ^{[37
]}

Alves, A. A., Jr. ^{[24
,38
]}

Amato, S. ^{[2
]}

Amerio, S. ^{[21
]}

Amhis, Y. ^{[7
]}

Anderlini, L. ^{[17
]}

Anderson, J. ^{[40
]}

Andreassen, R. ^{[58
]}

Appleby, R. B. ^{[55
]}

Gutierrez, O. Aquines ^{[10
]}

Archilli, F. ^{[18
]}

Artamonov, A. ^{[35
]}

Artuso, M. ^{[59
]}

Aslanides, E. ^{[6
]}

Auriemmam, G. ^{[24
,74
]}

Bachmann, S. ^{[11
]}

Back, J. J. ^{[49
]}

Baesso, C. ^{[60
]}

Balagura, V. ^{[30
]}

Baldini, W. ^{[16
]}

Barlow, R. J. ^{[55
]}

Barsche, C. ^{[38
]}

Barsuk, S. ^{[7
]}

Barter, W. ^{[48
]}

Bauer, Th. ^{[41
]}

Bay, A. ^{[39
]}

Beddow, J. ^{[52
]}

Bedeschi, F. ^{[22
]}

Bediagal, I. ^{[1
]}

Belogurov, S. ^{[30
]}

Belous, K. ^{[35
]}

Belyaev, I. ^{[30
]}

Ben-Haim, E. ^{[8
]}

Benayoun, M. ^{[8
]}

Bencivenni, G. ^{[18
]}

Benson, S. ^{[51
]}

Benton, J. ^{[47
]}

Berezhnoy, A. ^{[31
]}

机构：

[1] Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil

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

[3] Tsinghua Univ, Ctr High Energy Phys, Beijing 100084, Peoples R China

[4] Univ Savoie, 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 Sud, LAL, CNRS, IN2P3, Orsay, France

[8] Univ Paris Diderot, Univ Pierre & Marie Curie, LPNHE, CNRS,IN2P3, Paris, France

[9] Tech Univ Dortmund, Fak Phys, Dortmund, Germany

[10] MPIK, Heidelberg, Germany

[11] Heidelberg Univ, Inst Phys, Heidelberg, Germany

[12] Univ Coll Dublin, Sch Phys, Dublin 2, Ireland

[13] Sezione INFN Bari, Bari, Italy

[14] Sezione INFN Bologna, Bologna, Italy

[15] Sezione INFN Cagliari, Cagliari, Italy

[16] Sezione INFN Ferrara, Ferrara, Italy

[17] Sezione INFN Firenze, Florence, Italy

[18] Lab Nazl INFN Frascati, Frascati, Italy

[19] Sezione INFN Genova, Genoa, Italy

[20] Sezione INFN Milano Bicocca, Milan, Italy

[21] Sezione INFN Padova, Padua, Italy

[22] Sezione INFN Pisa, Pisa, Italy

[23] Sezione INFN Roma Tor Vergata, Rome, Italy

[24] Sezione INFN Roma Sapienza, Rome, Italy

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

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

[27] NCBJ, Warsaw, Poland

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

[29] Petersburg Nucl Phys Inst, Gatchina, Russia

[30] Inst Theoret & Expt Phys, Moscow 117259, Russia

[31] Moscow MV Lomonosov State Univ, Inst Nucl Phys, SINP MSU, Moscow, Russia

[32] Russian Acad Sci INR RAN, Inst Nucl Res, Moscow 117312, Russia

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

[34] Novosibirsk State Univ, Novosibirsk 630090, Russia

[35] Inst High Energy Phys, Protvino, Russia

[36] Univ Barcelona, Barcelona, Spain

[37] Univ Santiago de Compostela, Santiago De Compostela, Spain

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

[39] Ecole Polytech Fed Lausanne, CH-1015 Lausanne, Switzerland

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

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

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

[43] Vrije Univ Amsterdam, Amsterdam, Netherlands

[44] NSC Kharkiv Inst Phys & Technol, Kharkov, Ukraine

[45] Natl Acad Sci KINR, Inst Nucl Res, Kiev, Ukraine

[46] Univ Birmingham, Birmingham, W Midlands, England

[47] Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England

[48] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

[49] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England

[50] STFC Rutherford Appleton Lab, Didcot, Oxon, England

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2013年 / 05期

关键词：

Rare decay; Hadron-Hadron Scattering; Branching fraction; B physics; Flavour Changing Neutral Currents; DECAY; TOOL;

D O I：

10.1007/JHEP05(2013)159

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：

The branching fraction of the rare decay B-0 -> K*(0) e(+) e(-) in the dilepton mass region from 30 to 1000 MeV/c(2) has been measured by the LHCb experiment, using pp collision data, corresponding to an integrated luminosity of 1.0 fb(-1), at a centre-of-mass energy of 7 TeV. The decay mode B-0 -> J/psi (e(+) e(-)) K*(0) is utilized as a normalization channel. The branching fraction B(B-0 -> K*(0) e(+) e(-)) is measured to be B(B-0 -> K*(0) e(+) e(-))(30-1000 MeV/c2) = (3.1(-0.8)(-0.3)(+0.9)(+0.2) +/- 0.2) x 10(-7) where the fi rst error is statistical, the second is systematic, and the third comes from the uncertainties on the B-0 -> J/K*(0) and J/psi -> e(+) e(-) branching fractions.

引用

页数：18

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