Study of B- → DK-π+π- and B- → Dπ-π+π- decays and determination of the CKM angle γ

被引：7

作者：

Aaij, R. ^{[39
]}

Adeva, B. ^{[38
]}

Adinolfi, M. ^{[48
]}

Affolder, A. ^{[54
]}

Ajaltouni, Z. ^{[5
]}

Akar, S. ^{[6
]}

Albrecht, J. ^{[9
]}

Alessio, F. ^{[39
]}

Alexander, M. ^{[53
]}

Ali, S. ^{[42
]}

Alkhazov, G. ^{[30
]}

Cartelle, P. Alvarez ^{[55
]}

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

Amato, S. ^{[2
]}

Amerio, S. ^{[22
]}

Amhis, Y. ^{[7
]}

An, L. ^{[3
]}

Anderlini, L. ^{[17
,77
]}

Anderson, J. ^{[41
]}

Andreotti, M. ^{[16
,78
]}

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

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

Gutierrez, O. Aquines ^{[10
]}

Archilli, F. ^{[39
]}

d'Argent, P. ^{[11
]}

Artamonov, A. ^{[36
]}

Artuso, M. ^{[61
]}

Aslanides, E. ^{[6
]}

Auriemma, G. ^{[25
,79
]}

Baalouch, M. ^{[5
]}

Bachmann, S. ^{[11
]}

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

Badalov, A. ^{[37
]}

Baesso, C. ^{[62
,63
]}

Baldini, W. ^{[16
,39
]}

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

Barschel, C. ^{[39
]}

Barsuk, S. ^{[7
]}

Barter, W. ^{[39
]}

Batozskaya, V. ^{[28
]}

Battista, V. ^{[40
]}

Bay, A. ^{[40
]}

Beaucourt, L. ^{[4
]}

Beddow, J. ^{[53
]}

Bedeschi, F. ^{[23
]}

Bediaga, I. ^{[1
]}

Bel, L. J. ^{[42
]}

Belyaev, I. ^{[31
]}

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

Bencivenni, G. ^{[18
]}

机构：

[1] CBPF, Rio De Janeiro, Brazil

[2] Univ Fed Rio de Janeiro UFRJ, Rio De Janeiro, Brazil

[3] Tsinghua Univ, Ctr High Energy Phys, Beijing 100084, Peoples R China

[4] Univ Savoie Mont Blanc, 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, LAL, CNRS IN2P3, Orsay, France

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

[9] Tech Univ Dortmund, Fak Phys, D-44221 Dortmund, Germany

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

[11] Heidelberg Univ, Inst Phys, 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] Ist Nazl Fis Nucl, Lab Nazl, Frascati, Italy

[19] Sez INFN Genova, Genoa, Italy

[20] Sez INFN Milano Bicocca, Milan, Italy

[21] Sez INFN Milano, Milan, Italy

[22] Sez INFN Padova, Padua, Italy

[23] Sez INFN Pisa, Pisa, Italy

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

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

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

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

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

[29] Horia Hulubei Natl Inst Phys & Nucl Engn, Bucharest 077125, Romania

[30] PNPI, Gatchina, Russia

[31] Inst Theoret & Expt Phys, Moscow 117259, Russia

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

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

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

[35] Novosibirsk State Univ, Novosibirsk 630090, Russia

[36] Inst High Energy Phys, Protvino, Russia

[37] Univ Barcelona, Barcelona, Spain

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

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

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

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

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

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

[44] Vrije Univ Amsterdam, Amsterdam, Netherlands

[45] NSC KIPT, Kharkiv, 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 BS8 1TL, Avon, England

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

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

来源：

PHYSICAL REVIEW D | 2015年 / 92卷 / 11期

基金：

美国国家科学基金会;

关键词：

CP-VIOLATION; MODES; PHASE; TOOL;

D O I：

10.1103/PhysRevD.92.112005

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report a study of the suppressed B- -> DK-pi(+)pi(-) and favored B- -> D pi(-)pi(+)pi(-) decays, where the neutral D meson is detected through its decays to the K--/+pi(+/-) and CP -even K+K- and pi(+)pi(-) final states. The measurement is carried out using a proton-proton collision data sample collected by the LHCb experiment, corresponding to an integrated luminosity of 3.0 fb(-1). We observe the first significant signals in the CP - even final states of the D meson for both the suppressed B- -> DK-pi(+)pi(-) and favored B- -> D pi(-)pi(+)pi(-) modes, as well as in the doubly Cabibbo suppressed D -> K+pi(-) final state of the B- -> D pi(-)pi(+)pi(-) decay. Evidence for the suppressed decay B- -> DK-pi(+)pi(-), with D -> K+pi(-), is also presented. From the observed yields in the B- -> DK-pi(+)pi(-), B- -> D pi(-)pi(+)pi(-) and their charge conjugate decay modes, the most probable value of the weak phase gamma corresponds to gamma = (74(-19)(+20))degrees. This is one of the most precise single-measurement determinations of gamma to date.

引用

页数：20

共 50 条

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