Observation of decays B0→Ds()+π- and B0→Ds()-K+

被引：11

作者：

Aubert, B. ^{[1
]}

Barate, R.

Bona, M.

Boutigny, D.

Couderc, F.

Karyotakis, Y.

Lees, J. P.

Poireau, V.

Tisserand, V.

Zghiche, A.

Grauges, E.

Palano, A.

Chen, J. C.

Qi, N. D.

Rong, G.

Wang, P.

Zhu, Y. S.

Eigen, G.

Ofte, I.

Stugu, B.

Abrams, G. S.

Battaglia, M.

Brown, D. N.

Button-Shafer, J.

Cahn, R. N.

Charles, E.

Gill, M. S.

Groysman, Y.

Jacobsen, R. G.

Kadyk, J. A.

Kerth, L. T.

Kolomensky, Yu. G.

Kukartsev, G.

Lynch, G.

Mir, L. M.

Oddone, P. J.

Orimoto, T. J.

Pripstein, M.

Roe, N. A.

Ronan, M. T.

Suzuki, A.

Troost, D.

Wenzel, W. A.

Barrett, M.

Ford, K. E.

Harrison, T. J.

Hart, A. J.

Hawkes, C. M.

Morgan, S. E.

Watson, A. T.

机构：

[1] Lab Annecy Le Vieux Phys Particules, F-74941 Annecy Le Vieux, France

[2] Univ Barcelona, Fac Fis, Dept ECM, E-08028 Barcelona, Spain

[3] Univ Bari, Dipartmento Fis, I-70126 Bari, Italy

[4] Ist Nazl Fis Nucl, I-70126 Bari, Italy

[5] Inst High Energy Phys, Beijing 100039, Peoples R China

[6] Univ Bergen, Inst Phys, N-5007 Bergen, Norway

[7] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

[8] Univ Calif Berkeley, Berkeley, CA 94720 USA

[9] Univ Birmingham, Birmingham B15 2TT, W Midlands, England

[10] Ruhr Univ Bochum, Inst Expt Phys, D-44780 Bochum, Germany

[11] Univ Bristol, Bristol BS8 1TL, Avon, England

[12] Univ British Columbia, Vancouver, BC V6T 1Z1, Canada

[13] Brunel Univ, Uxbridge UB8 3PH, Middx, England

[14] Budker Inst Nucl Phys, Novosibirsk 630090, Russia

[15] Univ Calif Irvine, Irvine, CA 92697 USA

[16] Univ Calif Los Angeles, Los Angeles, CA 90024 USA

[17] Univ Calif Riverside, Riverside, CA 92521 USA

[18] Univ Calif San Diego, La Jolla, CA 92093 USA

[19] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA

[20] Univ Calif Santa Cruz, Inst Particle Phys, Santa Cruz, CA 95064 USA

[21] CALTECH, Pasadena, CA 91125 USA

[22] Univ Cincinnati, Cincinnati, OH 45221 USA

[23] Univ Colorado, Boulder, CO 80309 USA

[24] Colorado State Univ, Ft Collins, CO 80523 USA

[25] Univ Dortmund, Inst Phys, D-44221 Dortmund, Germany

[26] Tech Univ Dresden, Inst Kern & Teilchenphys, D-01062 Dresden, Germany

[27] Ecole Polytech, LLR, F-91128 Palaiseau, France

[28] Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland

[29] Univ Ferrara, Dipartmento Fis, I-44100 Ferrara, Italy

[30] Ist Nazl Fis Nucl, I-44100 Ferrara, Italy

[31] Lab Nazl Frascati, INFN, I-00044 Frascati, Italy

[32] Univ Genoa, Dept Phys, I-16146 Genoa, Italy

[33] Ist Nazl Fis Nucl, I-16146 Genoa, Italy

[34] Harvard Univ, Cambridge, MA 02138 USA

[35] Heidelberg Univ, Inst Phys, D-69120 Heidelberg, Germany

[36] Univ London Imperial Coll Sci Technol & Med, London SW7 2AZ, England

[37] Univ Iowa, Iowa City, IA 52242 USA

[38] Iowa State Univ, Ames, IA 50011 USA

[39] Johns Hopkins Univ, Baltimore, MD 21218 USA

[40] Univ Karlsruhe, Inst Expt Kernphys, D-76021 Karlsruhe, Germany

[41] CNRS, IN2P3, Lab Accelerateur Lineaire, F-91898 Orsay, France

[42] Univ Paris 11, Ctr Sci Orsay, F-91898 Orsay, France

[43] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

[44] Univ Liverpool, Liverpool L69 7ZE, Merseyside, England

[45] Queen Mary Univ London, London E1 4NS, England

[46] Univ London Royal Holloway & Bedford New Coll, Egham TW20 0EX, Surrey, England

[47] Univ Louisville, Louisville, KY 40292 USA

[48] Univ Manchester, Manchester M13 9PL, Lancs, England

[49] Univ Maryland, College Pk, MD 20742 USA

[50] Univ Massachusetts, Amherst, MA 01003 USA

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 98卷 / 08期

基金：

英国科学技术设施理事会;

关键词：

Electron energy levels - Elementary particles - Particle detectors - Storage rings;

D O I：

10.1103/PhysRevLett.98.081801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the observation of decays B-0 -> D-s((*)+)pi(-) and B-0 -> Ds(*)-K+ in a sample of 230x10(6) Upsilon(4S)-> BB events recorded with the BABAR detector at the SLAC PEP-II asymmetric-energy e(+)e(-) storage ring. We measure the branching fractions B(B-0 -> D-s(+)pi(-))=(1.3 +/- 0.3(stat)+/- 0.2(syst))x10(-5), B(B-0 -> Ds-K+)=(2.5 +/- 0.4(stat)+/- 0.4(syst))x10(-5), B(B-0 -> D-s(*+)pi(-))=(2.8 +/- 0.6(stat)+/- 0.5(syst))x10(-5), and B(B-0 -> Ds*-K+)=(2.0 +/- 0.5(stat)+/- 0.4(syst))x10(-5). The significances of the measurements to differ from zero are 5, 9, 6, and 5 standard deviations, respectively. This is the first observation of B-0 -> D-s(+)pi(-), B-0 -> D-s(*+)pi(-), and B-0 -> Ds*-K+ decays.

引用

页数：7

共 21 条

[1]

AGOSTINELLI S, 2002, NUCL INSTRUM METH A, V479, P1

[2]

ALBRECHT H, 1990, Z PHYS C PART FIELDS, V48, P543, DOI 10.1007/BF01614687

[3]

[Anonymous], CP VIOLATION

[4] Measurement of time-dependent CP-violating asymmetries and constraints on sin(2β+γ) with partial reconstruction of B→D*±π± decays -: art. no. 112003 [J].

Aubert, B ;

Barate, R ;

Boutigny, D ;

Couderc, F ;

Karyotakis, Y ;

Lees, JP ;

Poireau, V ;

Tisserand, V ;

Zghiche, A ;

Grauges, E ;

Palano, A ;

Pappagallo, M ;

Pompili, A ;

Chen, JC ;

Qi, ND ;

Rong, G ;

Wang, P ;

Zhu, YS ;

Eigen, G ;

Ofte, I ;

Stugu, B ;

Abrams, GS ;

Battaglia, M ;

Borgland, AW ;

Breon, AB ;

Brown, DN ;

Button-Shafer, J ;

Cahn, RN ;

Charles, E ;

Day, CT ;

Gill, MS ;

Gritsan, AV ;

Groysman, Y ;

Jacobsen, RG ;

Kadel, RW ;

Kadyk, J ;

Kerth, LT ;

Kolomensky, YG ;

Kukartsev, G ;

Lynch, G ;

Mir, LM ;

Oddone, PJ ;

Orimoto, TJ ;

Pripstein, M ;

Roe, NA ;

Ronan, MT ;

Wenzel, WA ;

Barrett, M ;

Ford, KE ;

Harrison, TJ .

PHYSICAL REVIEW D, 2005, 71 (11)

[5] Measurement of the B0→D*- Ds*+ and Ds+→ φπ+ branching fractions -: art. no. 091104 [J].

Aubert, B ;

Barate, R ;

Boutigny, D ;

Couderc, F ;

Karyotakis, Y ;

Lees, JP ;

Poireau, V ;

Tisserand, V ;

Zghiche, A ;

Grauges-Pous, E ;

Palano, A ;

Pappagallo, M ;

Pompili, A ;

Chen, JC ;

Qi, ND ;

Rong, G ;

Wang, P ;

Zhu, YS ;

Eigen, G ;

Ofte, I ;

Stugu, B ;

Abrams, GS ;

Borgland, AW ;

Breon, AB ;

Brown, DN ;

Button-Shafer, J ;

Cahn, RN ;

Charles, E ;

Day, CT ;

Gill, MS ;

Gritsan, AV ;

Groysman, Y ;

Jacobsen, RG ;

Kadel, RW ;

Kadyk, J ;

Kerth, LT ;

Kolomensky, YG ;

Kukartsev, G ;

Lynch, G ;

Mir, LM ;

Oddone, PJ ;

Orimoto, TJ ;

Pripstein, M ;

Roe, NA ;

Ronan, MT ;

Wenzel, WA ;

Barrett, M ;

Ford, KE ;

Harrison, TJ ;

Hart, AJ .

PHYSICAL REVIEW D, 2005, 71 (09) :1-7

[6] Measurement of time-dependent CP asymmetries in B0→D(*)±π∓ decays and constraints on sin(2β+γ) -: art. no. 251801 [J].

Aubert, B ;

Barate, R ;

Boutigny, D ;

Gaillard, JM ;

Hicheur, A ;

Karyotakis, Y ;

Lees, JP ;

Robbe, P ;

Tisserand, V ;

Zghiche, A ;

Palano, A ;

Pompili, A ;

Chen, JC ;

Qi, ND ;

Rong, G ;

Wang, P ;

Zhu, YS ;

Eigen, G ;

Ofte, I ;

Stugu, B ;

Abrams, GS ;

Borgland, AW ;

Breon, AB ;

Brown, DN ;

Button-Shafer, J ;

Cahn, RN ;

Charles, E ;

Day, CT ;

Gill, MS ;

Gritsan, AV ;

Groysman, Y ;

Jacobsen, RG ;

Kadel, RW ;

Kadyk, J ;

Kerth, LT ;

Kolomensky, YG ;

Kukartsev, G ;

LeClerc, C ;

Levi, ME ;

Lynch, G ;

Mir, LM ;

Oddone, PJ ;

Orimoto, TJ ;

Pripstein, M ;

Roe, NA ;

Romosan, A ;

Ronan, MT ;

Shelkov, VG ;

Telnov, AV ;

Wenzel, WA .

PHYSICAL REVIEW LETTERS, 2004, 92 (25) :251801-1

[7]

Aubert B, 2004, PHYS REV D, V70, DOI [10.1103/PhysRevD.70.072004, 10.1103/PhysRevD.70.091103]

[8] Study of the rare decays B0→Ds(*)+π- and B0→Ds(*)-K+ -: art. no. 181803 [J].

Aubert, B ;

Boutigny, D ;

Gaillard, JM ;

Hicheur, A ;

Karyotakis, Y ;

Lees, JP ;

Robbe, P ;

Tisserand, V ;

Zghiche, A ;

Palano, A ;

Pompili, A ;

Chen, JC ;

Qi, ND ;

Rong, G ;

Wang, P ;

Zhu, YS ;

Eigen, G ;

Ofte, I ;

Stugu, B ;

Abrams, GS ;

Borgland, AW ;

Breon, AB ;

Brown, DN ;

Button-Shafer, J ;

Cahn, RN ;

Charles, E ;

Gill, MS ;

Gritsan, AV ;

Groysman, Y ;

Jacobsen, RG ;

Kadel, RW ;

Kadyk, J ;

Kerth, LT ;

Kolomensky, YG ;

Kral, JF ;

LeClerc, C ;

Levi, ME ;

Lynch, G ;

Mir, LM ;

Oddone, PJ ;

Orimoto, TJ ;

Pripstein, M ;

Roe, NA ;

Romosan, A ;

Ronan, MT ;

Shelkov, VG ;

Telnov, AV ;

Wenzel, WA ;

Harrison, TJ ;

Hawkes, CM .

PHYSICAL REVIEW LETTERS, 2003, 90 (18) :181803/1-181803/7

[9] Measurements of branching fractions and CP-violating asymmetries in B0→π+π-, K+ π-, K+K- decays -: art. no. 281802 [J].

Aubert, B ;

Boutigny, D ;

Gaillard, JM ;

Hicheur, A ;

Karyotakis, Y ;

Lees, JP ;

Robbe, P ;

Tisserand, V ;

Zghiche, A ;

Palano, A ;

Pompili, A ;

Chen, JC ;

Qi, ND ;

Rong, G ;

Wang, P ;

Zhu, YS ;

Eigen, G ;

Ofte, I ;

Stugu, B ;

Abrams, GS ;

Borgland, AW ;

Breon, AB ;

Brown, DN ;

Button-Shafer, J ;

Cahn, RN ;

Charles, E ;

Gill, MS ;

Gritsan, AV ;

Groysman, Y ;

Jacobsen, RG ;

Kadel, RW ;

Kadyk, J ;

Kerth, LT ;

Kolomensky, YG ;

Kral, JF ;

LeClerc, C ;

Levi, ME ;

Lynch, G ;

Mir, LM ;

Oddone, PJ ;

Orimoto, TJ ;

Pripstein, M ;

Roe, NA ;

Romosan, A ;

Ronan, MT ;

Shelkov, VG ;

Telnov, AV ;

Wenzel, WA ;

Harrison, TJ ;

Hawkes, CM .

PHYSICAL REVIEW LETTERS, 2002, 89 (28) :281802/1-281802/7

[10] The BABAR detector [J].

Aubert, B ;

Bazan, A ;

Boucham, A ;

Boutigny, D ;

De Bonis, I ;

Favier, J ;

Gaillard, JM ;

Jeremie, A ;

Karyotakis, Y ;

Le Flour, T ;

Lees, JP ;

Lieunard, S ;

Petitpas, P ;

Robbe, P ;

Tisserand, V ;

Zachariadou, K ;

Palano, A ;

Chen, GP ;

Chen, JC ;

Qi, ND ;

Rong, G ;

Wang, P ;

Zhu, YS ;

Eigen, G ;

Reinertsen, PL ;

Stugu, B ;

Abbott, B ;

Abrams, GS ;

Amerman, L ;

Borgland, AW ;

Breon, AB ;

Brown, DN ;

Button-Shafer, J ;

Clark, AR ;

Dardin, S ;

Day, C ;

Dow, SF ;

Fan, Q ;

Gaponenko, I ;

Gill, MS ;

Goozen, FR ;

Gowdy, SJ ;

Gritsan, A ;

Groysman, Y ;

Hernikl, C ;

Jacobsen, RG ;

Jared, RC ;

Kadel, RW ;

Kadyk, J ;

Karcher, A .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2002, 479 (01) :1-116

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Observation of decays B0→Ds(*)+π- and B0→Ds(*)-K+

Observation of decays B0→Ds()+π- and B0→Ds()-K+