Observation of the decay Bs0 → (D)over-bar0K + K-

被引：17

作者：

Aaij, R. ^{[27
]}

Adeva, B. ^{[41
]}

Adinolfi, M. ^{[48
]}

Aidala, C. A. ^{[61
,73
]}

Alaltouni, Z. ^{[5
]}

Akarp, S. ^{[59
]}

Albicocco, P. ^{[18
]}

Albrecht, J. ^{[10
]}

Alessio, F. ^{[42
]}

Alexander, M. ^{[53
]}

Alfonso Albero, A. ^{[40
]}

Ali, S. ^{[27
]}

Alkhazov, G. ^{[33
]}

Cartelle, P. Alvarez ^{[55
]}

Alves, A. A., Jr. ^{[59
]}

Amato, S. ^{[2
]}

Amerio, S. ^{[23
]}

Amhis, Y. ^{[7
]}

An, L. ^{[3
]}

Anderlini, L. ^{[17
]}

Andreassi, G. ^{[43
]}

Andreotti, M. ^{[16
,75
]}

Andrews, J. E. ^{[60
]}

Appleby, R. B. ^{[56
]}

Archilli, F. ^{[27
]}

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

Romeu, J. Arnau ^{[6
]}

Artamonov, A. ^{[39
]}

Artuso, M. ^{[61
]}

Arzymatov, K. ^{[37
]}

Aslanides, E. ^{[6
]}

Atzeni, M. ^{[44
]}

Bachmann, S. ^{[12
]}

Back, J. J. ^{[50
]}

Baker, S. ^{[55
]}

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

Baldini, W. ^{[16
]}

Baranov, A. ^{[37
]}

Barlow, R. J. ^{[56
]}

Barsuk, S. ^{[7
]}

Barter, W. ^{[56
]}

Baryshnikov, F. ^{[34
,70
]}

Batozskaya, V. ^{[31
]}

Batsukh, B. ^{[61
]}

Battista, V. ^{[43
]}

Bay, A. ^{[43
]}

Beddow, J. ^{[53
]}

Bedeschi, F. ^{[24
]}

Bediaga, I. ^{[1
]}

Beiter, A. ^{[61
]}

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 Grenoble Alpes, Univ Savoie Mt Blanc, CNRS, IN2P3,LAPP, Annecy, France

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

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

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

[8] Sorbonne Univ, Paris Diderot Sorbonne Paris Cite, LPNHE, CNRS,IN2P3, Paris, France

[9] Rhein Westfal TH Aachen, Inst Phys 1, Aachen, Germany

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

[11] MPIK, Heidelberg, Germany

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

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

[14] INFN, Sez Bari, Bari, Italy

[15] INFN, Sez Bologna, Bologna, Italy

[16] INFN, Sez Ferrara, Ferrara, Italy

[17] INFN, Sez Firenze, Florence, Italy

[18] INFN, Lab Nazl Frascati, Frascati, Italy

[19] INFN, Sez Genova, Genoa, Italy

[20] INFN, Sez Milano Bicocca, Milan, Italy

[21] INFN, Sez Milano, Milan, Italy

[22] INFN, Sez Cagliari, Monserrato, Italy

[23] INFN, Sez Padova, Padua, Italy

[24] INFN, Sez Pisa, Pisa, Italy

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

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

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

[28] Vrije Univ Amsterdam, Amsterdam, Netherlands

[29] Polish Acad Sci, Henryk Niewodniczanski Inst Nucl Phys, 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] RAS, INR, Moscow, Russia

[37] Yandex Sch Data Anal, Moscow, Russia

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

[39] IHEP, Protvino, Russia

[40] Univ Barcelona, ICCUB, Barcelona, Spain

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

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

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

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

[45] NSC KIPT, Kharkov, Ukraine

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

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

[48] Univ Bristol, HH Wills Phys Lab, Bristol, Avon, England

[49] Univ Cambridge, Cavendish Lab, Cambridge, England

[50] Univ Warwick, Dept Phys, Coventry, W Midlands, England

来源：

PHYSICAL REVIEW D | 2018年 / 98卷 / 07期

关键词：

TOOL;

D O I：

10.1103/PhysRevD.98.072006

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The first observation of the B-s(0) -> (D) over bar K-0 (+) K- decay is reported, together with the most precise branching fraction measurement of the mode B-0 -> (D) over bar K-0 (+) K- The results are obtained from an analysis of pp collision data corresponding to an integrated luminosity of 3.0 fb(-1). The data were collected with the LHCb detector at center-of-mass energies of 7 and 8 TeV, The branching fraction of the B-0 -> (D) over bar K-0 (+) K- decay is measured relative to that of the decay B-0 -> (D) over bar (0)pi (+) pi(-) to be B(B-0 -> (D) over bar K-0 (+) K-)/B(B-0 -> (D) over bar (0)pi (+) pi(-)) =(69 +/- 0.4 +/- 0.3)%, where the first uncertainty is statistical and the second is systematic. The measured branching fraction of the B-s(0) -> (D) over bar K-0 (+) K- decay mode relative to that of the corresponding B-0 decay is B(B-0 -> (D) over bar K-0 (+) K-)/B(B-0 -> (D) over bar K-0 (+) K-) = (93.0 +/- 809 +/- 6.9)%. Using the known branching fraction of B-0 -> (D) over bar (0)pi (+) pi(-), the values of B-0 -> (D) over bar K-0 (+) K- = (6.1 +/- 0.4 +/- 0.3 +/- 0.3) x 10(-5) and B(B-s(0) -> (D) over bar K-0 (+) K- = (5.7 +/- 0.5 +/- 0.4 +/- 0.5) x 10(-5) are obtained, where the third uncertainties arise from the branching fraction of the decay modes B-0 -> (D) over bar (0)pi (+) pi(-) and B-0 -> (D) over bar K-0 (+) K-, respectively.

引用

页数：19

共 61 条

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