Measurement of CP-Violating and Mixing-Induced Observables in Bs0 → φγ Decays

被引：13

作者：

Aaij, R. ^{[29
]}

Beteta, C. Abellan ^{[46
]}

Adeva, B. ^{[43
]}

Adinolfi, M. ^{[50
]}

Aidala, C. A. ^{[63
,77
]}

Ajaltouni, Z. ^{[7
]}

Akar, S. ^{[61
]}

Albicocco, P. ^{[20
]}

Albrecht, J. ^{[12
]}

Alessio, F. ^{[44
]}

Alexander, M. ^{[55
]}

Alfonso Albero, A. ^{[42
]}

Alkhazov, G. ^{[35
]}

Cartelle, P. Alvarez ^{[57
]}

Alves Jr, A. A. ^{[43
]}

Amato, S. ^{[2
]}

Amhis, Y. ^{[9
]}

An, L. ^{[19
]}

Anderlini, L. ^{[19
]}

Andreassi, G. ^{[45
]}

Andreotti, M. ^{[18
]}

Andrews, J. E. ^{[62
]}

Archilli, F. ^{[20
]}

Romeu, J. Arnau ^{[8
]}

Artamonov, A. ^{[41
]}

Artuso, M. ^{[63
]}

Arzymatov, K. ^{[39
]}

Aslanides, E. ^{[8
]}

Atzeni, M. ^{[46
]}

Audurier, B. ^{[24
]}

Bachmann, S. ^{[14
]}

Back, J. J. ^{[52
]}

Baker, S. ^{[57
]}

Balagura, V ^{[9
,79
]}

Baldini, W. ^{[18
,44
]}

Baranov, A. ^{[39
]}

Barlow, R. J. ^{[58
]}

Barsuk, S. ^{[9
]}

Barter, W. ^{[57
]}

Bartolini, M. ^{[21
]}

Baryshnikov, F. ^{[36
,73
]}

Batozskaya, V ^{[33
]}

Batsukh, B. ^{[63
]}

Battig, A. ^{[12
]}

Battista, V ^{[45
]}

Bay, A. ^{[45
]}

Bedeschi, F. ^{[26
]}

Bediaga, I ^{[1
]}

Beiter, A. ^{[63
]}

Bel, L. J. ^{[29
]}

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 Chinese Acad Sci, Beijing, Peoples R China

[5] Inst High Energy Phys, Beijing, Peoples R China

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

[7] Univ Clermont Auvergne, LPC, CNRS, IN2P3, Clermont Ferrand, France

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

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

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

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

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

[13] MPIK, Heidelberg, Germany

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

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

[16] INFN, Sez Bari, Bari, Italy

[17] INFN, Sez Bologna, Bologna, Italy

[18] INFN, Sez Ferrara, Ferrara, Italy

[19] INFN, Sez Firenze, Florence, Italy

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

[21] INFN, Sez Genova, Genoa, Italy

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

[23] INFN, Sez Milano, Milan, Italy

[24] INFN, Sez Cagliari, Monserrato, Italy

[25] INFN, Sez Padova, Padua, Italy

[26] INFN, Sez Pisa, Pisa, Italy

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

[28] INFN, Sez Roma Sapienza, Rome, Italy

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

[30] Vrije Univ Amsterdam, Amsterdam, Netherlands

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

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

[33] Natl Ctr Nucl Res NCBJ, Warsaw, Poland

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

[35] Kurchatov Inst, NRC, Petersburg Nucl Phys Inst, Gatchina, Russia

[36] Kurchatov Inst, NRC, Inst Theoret & Expt Phys, Moscow, Russia

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

[38] Russian Acad Sci, INR, Moscow, Russia

[39] Yandex Sch Data Anal, Moscow, Russia

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

[41] Kurchatov Inst, NRC, IHEP, Protvino, Russia

[42] Univ Barcelona, ICCUB, Barcelona, Spain

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

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

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

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

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

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

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

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

来源：

PHYSICAL REVIEW LETTERS | 2019年 / 123卷 / 08期

关键词：

TOOL;

D O I：

10.1103/PhysRevLett.123.081802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A time-dependent analysis of the B-s(0) -> phi gamma decay rate is performed to determine the CP -violating observables S-phi gamma and C-phi gamma and the mixing-induced observable A(phi gamma)(Delta). The measurement is based on a sample of pp collision data recorded with the LHCb detector, corresponding to an integrated luminosity of 3 fb(-1) at center-of-mass energies of 7 and 8 TeV. The measured values are S-phi gamma = 0.43 +/- 0.30 +/- 0.11, C-phi gamma = 0.11 +/- 0.29 +/- 0.11, and A(phi gamma)(Delta) = -0.67(-0.41)(+0.37) +/- 0.17, where the first uncertainty is statistical and the second systematic. This is the first measurement of the observables S and C in radiative B-s(0) decays. The results are consistent with the standard model predictions.

引用

页数：10

共 27 条

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