Evidence for CP Violation in Time- Integrated D0 → h-h+ Decay Rates

被引：157

作者：

Aaij, R. ^{[1
]}

Abellan Beteta, C. ^{[36
,71
]}

Adeva, B. ^{[37
]}

Adinolfi, M. ^{[43
]}

Adrover, C. ^{[7
]}

Affolder, A. ^{[49
]}

Ajaltouni, Z. ^{[6
]}

Albrecht, J. ^{[38
]}

Alessio, F. ^{[38
]}

Alexander, M. ^{[48
]}

Alkhazov, G. ^{[29
]}

Alvarez Cartelle, P. ^{[37
]}

Alves, A. A., Jr. ^{[23
]}

Amato, S. ^{[3
]}

Amhis, Y. ^{[39
]}

Anderson, J. ^{[40
]}

Appleby, R. B. ^{[51
]}

Gutierrez, O. Aquines ^{[11
]}

Archilli, F. ^{[19
,38
]}

Arrabito, L. ^{[54
]}

Artamonov, A. ^{[35
]}

Artuso, M. ^{[38
,53
]}

Aslanides, E. ^{[7
]}

Auriemma, G. ^{[23
,70
]}

Bachmann, S. ^{[12
]}

Back, J. J. ^{[45
]}

Bailey, D. S. ^{[51
]}

Balagura, V. ^{[30
,38
]}

Baldini, W. ^{[17
]}

Barlow, R. J. ^{[51
]}

Barschel, C. ^{[38
]}

Barsuk, S. ^{[8
]}

Barter, W. ^{[44
]}

Bates, A. ^{[48
]}

Bauer, C. ^{[11
]}

Bauer, Th ^{[1
]}

Bay, A. ^{[39
]}

Bediaga, I. ^{[2
]}

Belogurov, S. ^{[30
]}

Belous, K. ^{[35
]}

Belyaev, I. ^{[30
,38
]}

Ben-Haim, E. ^{[9
]}

Benayoun, M. ^{[9
]}

Bencivenni, G. ^{[19
]}

Benson, S. ^{[47
]}

Benton, J. ^{[43
]}

Bernet, R. ^{[40
]}

Bettler, M. -O. ^{[18
]}

van Beuzekom, M. ^{[1
]}

Bien, A. ^{[12
]}

机构：

[1] Nikhef Natl Inst Subatom 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, LAPP, CNRS, IN2P3, 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, CNRS, IN2P3,LPNHE, Paris, France

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

[11] MPIK, Heidelberg, Germany

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

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

[14] Sez INFN Bari, Bari, Italy

[15] Sez INFN Bologna, Bologna, Italy

[16] Sez INFN Cagliari, Cagliari, Italy

[17] Sez INFN Ferrara, Ferrara, Italy

[18] Sez INFN Firenze, Florence, Italy

[19] Lab Nazl INFN Frascati, Frascati, Italy

[20] Sez INFN Genova, Genoa, Italy

[21] Sez INFN Milano Bicocca, Milan, Italy

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

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

[24] Vrije Univ Amsterdam, Amsterdam, Netherlands

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

[26] AGH Univ Sci & Technol, Krakow, Poland

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

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

[29] PNPI, Gatchina, Russia

[30] 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] Novosibirsk State Univ, Novosibirsk 630090, Russia

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

[35] IHEP, Protvino, Russia

[36] Univ Barcelona, Barcelona, Spain

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

[38] CERN, European Org Nucl Res, CH-1211 Geneva, Switzerland

[39] Ecole Polytech Fed Lausanne, CH-1015 Lausanne, Switzerland

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

[41] NSC KIPT, Kharkov, Ukraine

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

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

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

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

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

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

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

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

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

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 108卷 / 11期

关键词：

Supersymmetry;

D O I：

10.1103/PhysRevLett.108.111602

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A search for time-integrated CP violation in D-0 -> h(-)h(+) (h = K, pi) decays is presented using 0.62 fb(-1) of data collected by LHCb in 2011. The flavor of the charm meson is determined by the charge of the slow pion in the D*(+) -> D-0 pi(+) and D*(-) -> (D) over bar (0)pi(-) decay chains. The difference in CP asymmetry between D-0 -> K-K+ and D-0 -> pi(-)pi(+), Delta A(CP) A(CP)(K-K+) - A(CP)(pi(-)pi(+)), is measured to be [-0.82 +/- 0.21(stat) +/- 0.11(syst) +/-]%. This differs from the hypothesis of CP conservation by 3.5 standard deviations.

引用

页数：8

共 15 条

[1] Measurement of CP-violating asymmetries in D0 → π+ π- and D0 → K+ K- decays at CDF [J].

Aaltonen, T. ;

Alvarez Gonzalez, B. ;

Amerio, S. ;

Amidei, D. ;

Anastassov, A. ;

Annovi, A. ;

Antos, J. ;

Apollinari, G. ;

Appel, J. A. ;

Arisawa, T. ;

Artikov, A. ;

Asaadi, J. ;

Ashmanskas, W. ;

Auerbach, B. ;

Aurisano, A. ;

Azfar, F. ;

Badgett, W. ;

Bae, T. ;

Barbaro-Galtieri, A. ;

Barnes, V. E. ;

Barnett, B. A. ;

Barria, P. ;

Bartos, P. ;

Bauce, M. ;

Bedeschi, F. ;

Behari, S. ;

Bellettini, G. ;

Bellinger, J. ;

Benjamin, D. ;

Beretvas, A. ;

Bhatti, A. ;

Bisello, D. ;

Bizjak, I. ;

Bland, K. R. ;

Blumenfeld, B. ;

Bocci, A. ;

Bodek, A. ;

Bortoletto, D. ;

Boudreau, J. ;

Boveia, A. ;

Brigliadori, L. ;

Bromberg, C. ;

Brucken, E. ;

Budagov, J. ;

Budd, H. S. ;

Burkett, K. ;

Busetto, G. ;

Bussey, P. ;

Buzatu, A. ;

Calamba, A. .

PHYSICAL REVIEW D, 2012, 85 (01)

[2] The LHCb Detector at the LHC [J].

Alves, A. Augusto, Jr. ;

Andrade Filho, L. M. ;

Barbosa, A. F. ;

Bediaga, I. ;

Cernicchiaro, G. ;

Guerrer, G. ;

Lima, H. P., Jr. ;

Machado, A. A. ;

Magnin, J. ;

Marujo, F. ;

de Miranda, J. M. ;

Reis, A. ;

Santos, A. ;

Toledo, A. ;

Akiba, K. ;

Amato, S. ;

de Paula, B. ;

de Paula, L. ;

da Silva, T. ;

Gandelman, M. ;

Lopes, J. H. ;

Marechal, B. ;

Moraes, D. ;

Polycarpo, E. ;

Rodrigues, F. ;

Ballansat, J. ;

Bastian, Y. ;

Boget, D. ;

De Bonis, I. ;

Coco, V. ;

David, P. Y. ;

Decamp, D. ;

Delebecque, P. ;

Drancourt, C. ;

Dumont-Dayot, N. ;

Girard, C. ;

Lieunard, B. ;

Minard, M. N. ;

Pietrzyk, B. ;

Rambure, T. ;

Rospabe, G. ;

T'Jampens, S. ;

Ajaltouni, Z. ;

Bohner, G. ;

Bonnefoy, R. ;

Borras, D. ;

Carloganu, C. ;

Chanal, H. ;

Conte, E. ;

Cornat, R. .

JOURNAL OF INSTRUMENTATION, 2008, 3

[3]

Asner D., ARXIV10101589 HEAV F

[4] 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)

[5]

Aubert B, 2007, PHYS REV LETT, V98, DOI 10.1103/PhysRevLett.98.211802

[6] 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

[7] Conclusions from CDF results on CP violation in D0 → π+π-, K+K- and future tasks [J].

Bigi, Ikaros I. ;

Paul, Ayan ;

Recksiegel, Stefan .

JOURNAL OF HIGH ENERGY PHYSICS, 2011, (06)

[8] CP violation in D0-(D)over-bar0 oscillations: general considerations and applications to the Littlest Higgs model with T-parity [J].

Bigi, Ikaros I. ;

Blanke, Monika ;

Buras, Andrzej J. ;

Recksiegel, Stefan .

JOURNAL OF HIGH ENERGY PHYSICS, 2009, (07)

[9]

Bobrowski M, 2010, J HIGH ENERGY PHYS, DOI 10.1007/JHEP03(2010)009

[10] Comment on extracting α from B→ρρ -: art. no. 011502 [J].

Falk, AF ;

Ligeti, Z ;

Nir, Y ;

Quinn, H .

PHYSICAL REVIEW D, 2004, 69 (01)

← 1 2 →