First observation of Bs0 → J/ψ f0(980) decays

被引：91

作者：

Aaij, R. ^{[23
]}

Adeva, B. ^{[35
]}

Adinolfi, M. ^{[52
]}

Adrover, C. ^{[6
]}

Affolder, A. ^{[47
]}

Ajaltouni, Z. ^{[5
]}

Albrecht, J. ^{[36
]}

Alessio, F. ^{[6
,36
]}

Alexander, M. ^{[46
]}

Alvarez Cartelle, R. ^{[35
]}

Alves, A. A., Jr. ^{[22
]}

Amato, S. ^{[2
]}

Amhis, Y. ^{[37
]}

Amoraal, J. ^{[23
]}

Anderson, J. ^{[38
]}

Appleby, R. B. ^{[49
]}

Gutierrez, O. Aquines ^{[10
]}

Arrabito, L. ^{[52
]}

Artuso, M. ^{[51
]}

Aslanides, E. ^{[6
]}

Auriemma, G. ^{[22
]}

Bachmann, S. ^{[11
]}

Bailey, D. S. ^{[49
]}

Balagura, V. ^{[30
,36
]}

Baldini, W. ^{[16
]}

Barlow, R. J. ^{[49
]}

Barschel, C. ^{[36
]}

Barsuk, S. ^{[7
]}

Bates, A. ^{[46
]}

Bauer, C. ^{[10
]}

Bauer, Th. ^{[23
]}

Bay, A. ^{[37
]}

Bediaga, I. ^{[1
]}

Elous, K.

Belyaev, I. ^{[30
,36
]}

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

Benayoun, M. ^{[8
]}

Bencivenni, G. ^{[18
]}

Bernet, R. ^{[38
]}

Bettler, M. -O ^{[17
,36
]}

van Beuzekom, M. ^{[23
]}

Bifani, S. ^{[12
]}

Bizzeti, A. ^{[17
]}

Bjornstad, P. M. ^{[49
]}

Blake, T. ^{[48
]}

Blanc, F. ^{[37
]}

Blanks, C. ^{[48
]}

Blouw, J. ^{[11
]}

Blusk, S. ^{[51
]}

Bobrov, A. ^{[33
,36
]}

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 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 11, CNRS, IN2P3, LAL, F-91405 Orsay, France

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

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

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

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

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

[13] Sez INFN Bari, Bari, Italy

[14] Sez INFN Bologna, Bologna, Italy

[15] Sez INFN Cagliari, Cagliari, Italy

[16] Sez INFN Ferrara, Ferrara, Italy

[17] Sez INFN Firenze, Florence, Italy

[18] Lab Nazl INFN Frascati, Frascati, Italy

[19] Sez INFN Genova, Genoa, Italy

[20] Sez INFN Milano Bicocca, Milan, Italy

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

[22] Sez INFN Roma Sapienza, Rome, Italy

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

[24] Vrije Univ Amsterdam, Amsterdam, Netherlands

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

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

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

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

[29] Petersburg Nucl Phys Inst PNPI, Gatchina, Russia

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

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

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

[33] Budker Inst Nucl Phys, Novosibirsk 630090, Russia

[34] Univ Barcelona, Barcelona, Spain

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

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

[37] Ecole Polytech Fed Lausanne, Lausanne, Switzerland

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

[39] NSC Kharkiv Inst Phys & Technol NSC KIPT, Kharkov, Ukraine

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

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

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

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

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

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

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

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

[48] Univ London Imperial Coll Sci Technol & Med, London, England

[49] Univ Manchester, Sch Phys & Astron, Manchester, Lancs, England

[50] Univ Oxford, Dept Phys, Oxford, England

来源：

PHYSICS LETTERS B | 2011年 / 698卷 / 02期

基金：

美国国家科学基金会;

关键词：

LHC; Hadronic B decays; B-s(0) meson;

D O I：

10.1016/j.physletb.2011.03.006

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Using data collected with the LHCb detector in proton-proton collisions at a centre-of-mass energy of 7 TeV, the hadronic decay B-s(0) -> J/psi f(0)(980) is observed. This CP eigenstate mode could be used to measure mixing-induced CP violation in the B? system. Using a fit to the pi(+)pi(-) mass spectrum with interfering resonances gives R-f0/phi equivalent to inverted right perpendicular(B-s(0) -> J/psi f(0) -> pi(+)pi(-)/inverted right perpendicular(B-s(0) -> J/psi phi,phi -> K+K-) = 0.252(-0.032-0.033)(+0.046+0.027). In the interval +/- 90 MeV around 980 MeV, corresponding to approximately two full Jo widths we also find R' equivalent to inverted right perpendicular(B-s(0) -> J/psi pi(+)pi(-),vertical bar m(pi(+)pi(-))-980 MeV vertical bar<90 MeV)/inverted right perpendicular(B-s(0) -> J/psi phi,phi -> K+K- = 0.162 +/- 0.022 +/- 0.016, where in both cases the uncertainties are statistical and systematic, respectively. (C) 2011 CERN. Published by Elsevier B.V. All rights reserved.

引用

页码：115 / 122

页数：8

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