Observation of CP Violation in Charm Decays

被引：205

作者：

Aaij, R. ^{[29
]}

Beteta, C. Abellan ^{[46
]}

Adeva, B. ^{[43
]}

Adinolfi, M. ^{[50
]}

Aidala, C. A. ^{[85
,86
]}

Ajaltouni, Z. ^{[7
]}

Akar, S. ^{[61
]}

Albicocco, P. ^{[20
]}

Albrecht, J. ^{[12
]}

Alessio, F. ^{[44
]}

Alexander, M. ^{[55
]}

Albero, A. Alfonso ^{[42
]}

Alkhazov, G. ^{[41
]}

Cartelle, P. Alvarez ^{[57
]}

Alves, A. A., Jr. ^{[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. ^{[29
]}

Romeu, J. Arnau ^{[8
]}

Artamonov, A. ^{[40
]}

Artuso, M. ^{[63
]}

Arzymatov, K. ^{[38
]}

Aslanides, E. ^{[8
]}

Atzeni, M. ^{[46
]}

Audurier, B. ^{[24
]}

Bachmann, S. ^{[14
]}

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

Baker, S. ^{[57
]}

Balagura, V. ^{[9
,88
]}

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

Baranov, A. ^{[38
]}

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

Barsuk, S. ^{[9
]}

Barter, W. ^{[57
]}

Bartolini, M. ^{[21
]}

Baryshnikov, F. ^{[78
,79
]}

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] Ihep, Beijing, Peoples R China

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

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

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

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

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

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

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

[13] MPIK, Heidelberg, Germany

[14] Heidelberg Univ, Inst Phys, 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 La 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] NRC KI, ITEP, Moscow, Russia

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

[37] RAS, INR, Moscow, Russia

[38] Yandex Sch Data Anal, Moscow, Russia

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

[40] NRC KI, IHEP, Protvino, Russia

[41] NRC KI, PNPI, Gatchina, Russia

[42] Univ Barcelona, ICCUB, Barcelona, Spain

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

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

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

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

[47] NSC KIPT, 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 / 122卷 / 21期

关键词：

PRODUCTION ASYMMETRY; PROGRESS; SEARCH; B-S(0); D-0;

D O I：

10.1103/PhysRevLett.122.211803

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A search for charge-parity (CP) violation in D-0 -> K-K+ and D-0 -> pi(-)pi(+) decays is reported, using pp collision data corresponding to an integrated luminosity of 5.9 fb(-1) collected at a center-of-mass energy of 13 TeV with the LHCb detector. The flavor of the charm meson is inferred from the charge of the pion in D* (2010)(+) -> D-0 pi(+) decays or from the charge of the muon in (B) over bar -> D-0 mu(-)(nu) over bar X-mu decays. The difference between the CP asymmetries in D-0 -> K-K+ and D-0 -> pi(-)pi(+) decays is measured to be Delta A(CP) = [-18.2 +/- 3.2(stat) +/- 0.9(syst)] x 10(-4) for pi-tagged and Delta A(CP) = [-9 +/- 8(stat) +/- 5(syst)] x 10(-4) for mu-tagged D-0 mesons. Combining these with previous LHCb results leads to Delta A(CP) = (-15.4 +/- 2.9) x 10(-4), where the uncertainty includes both statistical and systematic contributions. The measured value differs from zero by more than 5 standard deviations. This is the first observation of CP violation in the decay of charm hadrons.

引用

页数：12

共 65 条

[21]

[Anonymous], 2008, J INSTRUM, DOI [DOI 10.1088/1748-0221/3/08/S08005, 10.1088/1748-0221/3/08/S08005]

[22]

[Anonymous], 2012, J HIGH ENERGY PHYS, DOI DOI 10.1007/JHEP05(2012)140

[23] Charm Meson Decays [J].

Artuso, Manna ;

Meadows, Brian ;

Petrov, Alexey A. .

ANNUAL REVIEW OF NUCLEAR AND PARTICLE SCIENCE, 2008, 58 :249-291

[24] Searching for the origin of CP violation in Cabibbo-suppressed D-meson decays [J].

Atwood, David ;

Soni, Amarjit .

PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS, 2013, 2013 (09)

[25] Search for CP violation in the decays D0→K-K+ and D0→π-π+ [J].

Aubert, B. ;

Bona, M. ;

Boutigny, D. ;

Karyotakis, Y. ;

Lees, J. P. ;

Poireau, V. ;

Prudent, X. ;

Tisserand, V. ;

Zghiche, A. ;

Tico, J. Garra ;

Grauges, E. ;

Lopez, L. ;

Palano, A. ;

Pappagallo, M. ;

Eigen, G. ;

Stugu, B. ;

Sun, L. ;

Abrams, G. S. ;

Battaglia, M. ;

Brown, D. N. ;

Button-Shafer, J. ;

Cahn, R. N. ;

Groysman, Y. ;

Jacobsen, R. G. ;

Kadyk, J. A. ;

Kerth, L. T. ;

Kolomensky, Yu. G. ;

Kukartsev, G. ;

Pegna, D. Lopes ;

Lynch, G. ;

Mir, L. M. ;

Orimoto, T. J. ;

Osipenkov, I. L. ;

Ronan, M. T. ;

Tackmann, K. ;

Tanabe, T. ;

Wenzel, W. A. ;

Sanchez, P. del Amo ;

Hawkes, C. M. ;

Watson, A. T. ;

Koch, H. ;

Schroeder, T. ;

Walker, D. ;

Asgeirsson, D. J. ;

Cuhadar-Donszelmann, T. ;

Fulsom, B. G. ;

Hearty, C. ;

Mattison, T. S. ;

McKenna, J. A. ;

Barrett, M. .

PHYSICAL REVIEW LETTERS, 2008, 100 (06)

[26]

Aubert B, 2004, PHYS REV LETT, V93, DOI [10.1103/PhysRevLett.93.181801, 10.1103/PhysRevLett.93.231801, 10.1103/PhysRevLett.93.131801, 10.1103/PhysRevLett.93.041801, 10.1103/PhysRevLett.93.081801]

[27]

Aubert B, 2001, PHYS REV LETT, V87, DOI [10.1103/PhysRevLett.87.091801, 10.1103/PhysRevLett.87.241801]

[28] CP asymmetries in singly-Cabibbo-suppressed D decays to two pseudoscalar mesons [J].

Bhattacharya, Bhubanjyoti ;

Gronau, Michael ;

Rosner, Jonathan L. .

PHYSICAL REVIEW D, 2012, 85 (05)

[29] A Cicerone for the physics of charm [J].

Bianco, S. ;

Fabbri, F. L. ;

Benson, D. ;

Bigi, I. .

RIVISTA DEL NUOVO CIMENTO, 2003, 26 (7-8) :1-200

[30] A consistent picture for large penguins in D → π+π-, K+K- [J].

Brod, Joachim ;

Grossman, Yuval ;

Kagan, Alexander L. ;

Zupan, Jure .

JOURNAL OF HIGH ENERGY PHYSICS, 2012, (10)

← 1 2 3 4 5 6 7 →