Measurement of the ratio of branching fractions B(B0 → K*0γ)/B(Bs0 → φγ)

被引：13

作者：

Aaij, R. ^{[1
]}

Abellan Beteta, C. ^{[35
,70
]}

Adeva, B. ^{[36
]}

Adinolfi, M. ^{[44
]}

Adrover, C. ^{[7
]}

Affolder, A. ^{[50
]}

Ajaltouni, Z. ^{[6
]}

Albrecht, J. ^{[37
]}

Alessio, F. ^{[37
]}

Alexander, M. ^{[49
]}

Alkhazov, G. ^{[28
]}

Alvarez Cartelle, P. ^{[36
]}

Alves, A. A., Jr. ^{[23
]}

Amato, S. ^{[3
]}

Amhis, Y. ^{[38
]}

Anderson, J. ^{[39
]}

Appleby, R. B. ^{[52
]}

Gutierrez, O. Aquines ^{[11
]}

Archilli, F. ^{[19
,37
]}

Arrabito, L.

Artamonov, A. ^{[34
]}

Artuso, M. ^{[37
,54
]}

Aslanides, E. ^{[7
]}

Auriemma, G. ^{[23
,69
]}

Bachmann, S. ^{[12
]}

Back, J. J. ^{[46
]}

Bailey, D. S. ^{[52
]}

Balagura, V. ^{[29
,37
]}

Baldini, W. ^{[17
]}

Barlow, R. J. ^{[52
]}

Barschel, C. ^{[37
]}

Barsuk, S. ^{[8
]}

Barter, W. ^{[45
]}

Bates, A. ^{[49
]}

Bauer, C. ^{[11
]}

Bauer, Th. ^{[1
]}

Bay, A. ^{[38
]}

Bediaga, I. ^{[2
]}

Belogurov, S. ^{[29
]}

Belous, K. ^{[34
]}

Belyaev, I. ^{[29
]}

Ben-Haim, E. ^{[9
]}

Benayoun, M. ^{[9
]}

Bencivenni, G. ^{[19
]}

Benson, S. ^{[48
]}

Benton, J. ^{[44
]}

Bernet, R. ^{[39
]}

Bettler, M. -O. ^{[18
]}

van Beuzekom, M. ^{[1
]}

Bien, A. ^{[12
]}

机构：

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

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

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

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

[5] Univ Savoie, LAPP, CNRS, IN2P3, Annecy Le Vieux, France

[6] Univ Clermont Ferrand 2, Univ Blaise Pascal, CNRS, IN2P3,LPC, Clermont Ferrand, France

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

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

[9] Univ Paris 06, Univ Paris Diderot, LPNHE, CNRS IN2P3, Paris, France

[10] Univ Dortmund, Fak Phys, Dortmund, Germany

[11] Max Planck Inst Kernphys, D-69117 Heidelberg, Germany

[12] Heidelberg Univ, Inst Phys, D-6900 Heidelberg, Germany

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

[14] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy

[15] Ist Nazl Fis Nucl, Sez Bologna, I-40126 Bologna, Italy

[16] Ist Nazl Fis Nucl, Sez Cagliari, Cagliari, Italy

[17] Ist Nazl Fis Nucl, Sez Ferrara, Ferrara, Italy

[18] Ist Nazl Fis Nucl, Sez Firenze, I-50125 Florence, Italy

[19] Lab Nazl INFN Frascati, Frascati, Italy

[20] Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy

[21] Ist Nazl Fis Nucl, Sez Milano Bicocca, I-20133 Milan, Italy

[22] Ist Nazl Fis Nucl, Sez Roma Tor Vergata, Rome, Italy

[23] Ist Nazl Fis Nucl, Sez Roma La Sapienza, Rome, Italy

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

[25] AGH Univ Sci & Technol, Krakow, Poland

[26] Soltan Inst Nucl Studies, PL-00681 Warsaw, Poland

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

[28] Petersburg Nucl Phys Inst, Gatchina, Russia

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

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

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

[32] Budker Inst Nucl Phys, SB RAS, Novosibirsk 630090, Russia

[33] Novosibirsk State Univ, Novosibirsk 630090, Russia

[34] Inst High Energy Phys, Protvino, Russia

[35] Univ Barcelona, Barcelona, Spain

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

[37] CERN, European Org Nucl Res, CH-1211 Geneva, Switzerland

[38] Ecole Polytech Fed Lausanne, Lausanne, Switzerland

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

[40] Vrije Univ Amsterdam, Amsterdam, Netherlands

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

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

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

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

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

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

[47] Rutherford Appleton Lab, STFC, Didcot OX11 0QX, Oxon, England

[48] Univ Edinburgh, Sch Phys & Astron, Edinburgh, Midlothian, Scotland

[49] Univ Glasgow, Sch Phys & Astron, Glasgow, Lanark, Scotland

[50] Univ Liverpool, Oliver Lodge Lab, Liverpool L69 3BX, Merseyside, England

来源：

PHYSICAL REVIEW D | 2012年 / 85卷 / 11期

关键词：

DECAYS;

D O I：

10.1103/PhysRevD.85.112013

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The ratio of branching fractions of the radiative B decays B-0 -> K*(0)gamma and B(0)s -> phi gamma has been measured using 0.37 fb(-1) of pp collisions at a center of mass energy of root s = 7 TeV, collected by the LHCb experiment. The value obtained is B(B-0 -> K*(0)gamma)/B(B(0)s ->phi gamma) = 1.12 +/- 0.08(-0.04-0.08)(+0.06+0 .09), where the first uncertainty is statistical, the second systematic, and the third is associated with the ratio of fragmentation fractions f(s)/f(d). Using the world average for B(B-0 -> K*(0)gamma) = (4.33 +/- 0.15) x 10(-5), the branching fraction B(B(0)s -> phi gamma) is measured to be (3.9 +/- 0.5) x 10(-5), which is the most precise measurement to date.

引用

页数：8

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