Determination of fs/fd for 7 TeV pp Collisions and Measurement of the B0 → D-K+ Branching Fraction

被引：34

作者：

Aaij, R. ^{[1
]}

Adeva, B. ^{[52
]}

Adinolfi, M. ^{[59
]}

Adrover, C. ^{[7
]}

Affolder, A. ^{[21
,65
]}

Ajaltouni, Z. ^{[6
]}

Albrecht, J. ^{[53
]}

Alessio, F. ^{[7
,53
]}

Alexander, M. ^{[64
]}

Alkhazov, G. ^{[42
]}

Cartelle, P. Alvarez ^{[52
]}

Alves, A. A., Jr. ^{[35
]}

Amato, S. ^{[3
]}

Amhis, Y. ^{[54
]}

Amoraal, J. ^{[1
]}

Anderson, J. ^{[56
]}

Appleby, R. B. ^{[67
]}

Gutierrez, O. Aquines ^{[11
]}

Arrabito, L.

Artamonov, A. ^{[48
]}

Artuso, M. ^{[53
,69
]}

Aslanides, E. ^{[7
]}

Auriemma, G. ^{[28
,35
]}

Bachmann, S. ^{[13
]}

Back, J. J. ^{[61
]}

Bailey, D. S. ^{[67
]}

Balagura, V. ^{[43
,53
]}

Baldini, W. ^{[21
]}

Barlow, R. J. ^{[67
]}

Barschel, C. ^{[53
]}

Barsuk, S. ^{[8
]}

Barter, W. ^{[60
]}

Bates, A. ^{[64
]}

Bauer, C. ^{[11
]}

Bauer, Th. ^{[1
]}

Bay, A. ^{[54
]}

Bediaga, I. ^{[21
]}

Belous, K. ^{[48
]}

Belyaev, I. ^{[43
,53
]}

Ben-Haim, E.

Benayoun, M. ^{[9
]}

Bencivenni, G. ^{[27
]}

Benson, S. ^{[63
]}

Benton, J. ^{[59
]}

Bernet, R. ^{[56
]}

Bettler, M. -O. ^{[23
,53
]}

van Beuzekom, M. ^{[1
]}

Bien, A. ^{[13
]}

Bifani, S. ^{[14
]}

Bizzeti, A. ^{[23
,26
]}

机构：

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

[2] CBPF, 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, CNRS, IN2P3, LAPP, Annecy Le Vieux, France

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

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

[8] Univ Paris 11, CNRS, IN2P3, LAL, F-91405 Orsay, France

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

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

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

[12] Russian Acad Sci LPI RAS, PN Lebedev Phys Inst, Moscow, Russia

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

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

[15] Sez INFN Bari, Bari, Italy

[16] Univ Bari, Bari, Italy

[17] Sez INFN Bologna, Bologna, Italy

[18] Univ Bologna, Bologna, Italy

[19] Sez INFN Cagliari, Cagliari, Italy

[20] Univ Cagliari, Cagliari, Italy

[21] Sez INFN Ferrara, Ferrara, Italy

[22] Univ Ferrara, I-44100 Ferrara, Italy

[23] Sez INFN Firenze, Florence, Italy

[24] Univ Florence, Florence, Italy

[25] Univ Urbino, I-61029 Urbino, Italy

[26] Univ Modena & Reggio Emilia, Modena, Italy

[27] Lab Nazl INFN Frascati, Frascati, Italy

[28] Univ Roma La Sapienza, Rome, Italy

[29] Sez INFN Genova, Genoa, Italy

[30] Univ Genoa, Genoa, Italy

[31] Sez INFN Milano Bicocca, Milan, Italy

[32] Univ Milano Bicocca, Milan, Italy

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

[34] Univ Roma Tor Vergata, Rome, Italy

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

[36] Univ Basilicata, I-85100 Potenza, Italy

[37] Vrije Univ Amsterdam, Amsterdam, Netherlands

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

[39] Fac Phys & Appl Comp Sci, Krakow, Poland

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

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

[42] PNPI, Gatchina, Russia

[43] ITEP, Moscow, Russia

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

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

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

[47] Novosibirsk State Univ, Novosibirsk 630090, Russia

[48] IHEP, Protvino, Russia

[49] Univ Barcelona, Barcelona, Spain

[50] Univ Ramon Llull, LIFAELS, Barcelona, Spain

来源：

PHYSICAL REVIEW LETTERS | 2011年 / 107卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.107.211801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The relative abundance of the three decay modes B-0 -> D-K+, B-0 -> D-pi(+), and B-s(0) -> D-s(-)pi(+) produced in 7 TeV pp collisions at the LHC is determined from data corresponding to an integrated luminosity of 35 pb(-1). The branching fraction of B-0 -> D-K+ is found to be B(B-0 -> D-K+) = (2.01 +/- 0.18(stat) +/- 0.14(syst)) x 10(-4). The ratio of fragmentation fractions f(s)/f(d) is determined through the relative abundance of B-s(0) -> D-s(-)pi(+) to B-0 -> D-K+ and B-0 -> D-pi(+), leading to f(s)/f(d) = 0.253 +/- 0.017 +/- 0.017 +/- 0.020, where the uncertainties are statistical, systematic, and theoretical, respectively.

引用

页数：8

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