First Observation of the Decays (B)over-bar0 → D+K-π+π- and B- → D0K-π+π-

被引：9

作者：

Aaij, R. ^{[1
]}

Abellan Beteta, C. ^{[36
,41
,58
]}

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
,59
]}

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 Subat Phys, Amsterdam, Netherlands

[2] Ctr Brasileiro Pesquisas Fis, 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, CNRS, LAPP, IN2P3, Annecy Le Vieux, France

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

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

[8] Univ Paris Sud, LAL, CNRS, IN2P3, Orsay, France

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

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

[11] Max Planck Inst Kernphys, D-69117 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] Petersburg Nucl Phys Inst PNPI, Gatchina, Russia

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

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

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

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

[34] Novosibirsk State Univ, Novosibirsk 630090, Russia

[35] Inst High Energy Phys, Protvino, Russia

[36] Univ Barcelona, Barcelona, Spain

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

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

[39] Ecole Polytech Fed Lausanne, Lausanne, Switzerland

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

[41] NSC Kharkiv Inst Phys & Technol 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 / 16期

基金：

美国国家科学基金会;

关键词：

CP-VIOLATION; EXTRACTION; PHASE;

D O I：

10.1103/PhysRevLett.108.161801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

First observations of the Cabibbo-suppressed decays (B) over bar (0) -> D+K-pi(+)pi(-) and B- -> (DK-)-K-0 pi(+)pi(-) are reported using 35 pb(-1) of data collected with the LHCb detector. Their branching fractions are measured with respect to the corresponding Cabibbo-favored decays, from which we obtain B((B) over bar (0) -> D+K-pi(+)pi(-))/B((B) over bar (0) -> D+pi(-)pi(+)pi(-) = (5.9 +/- 1.1 +/- 0.5) x 10(-2) and B(B- -> (DK-)-K-0 pi(+)pi(-))/B(B- -> D-0 pi(-)pi(+)pi(-)) = (0.9 +/- 1.3 +/- 0.9) x 10(-2), where the uncertainties are statistical and systematic, respectively. The B- -> (DK-)-K-0 pi(+)pi(-) decay is particularly interesting, as it can be used in a similar way to B- -> (DK-)-K-0 to measure the Cabibbo-Kobayashi-Maskawa phase gamma.

引用

页数：8

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