Measurement of the branching fractions of the radiative charm decays D0→(K)overbar*0γ and D0→φγ

被引：18

作者：

Aubert, B. ^{[1
,2
]}

Bona, M. ^{[1
,2
]}

Karyotakis, Y. ^{[1
,2
]}

Lees, J. P. ^{[1
,2
]}

Poireau, V. ^{[1
,2
]}

Prencipe, E. ^{[1
,2
]}

Prudent, X. ^{[1
,2
]}

Tisserand, V. ^{[1
,2
]}

Tico, J. Garra ^{[3
]}

Grauges, E. ^{[3
]}

Lopez, L. ^{[4
,5
]}

Palano, A. ^{[4
,5
]}

Pappagallo, M. ^{[4
,5
,31
]}

Eigen, G. ^{[6
]}

Stugu, B. ^{[6
]}

Sun, L. ^{[6
]}

Abrams, G. S. ^{[7
]}

Battaglia, M. ^{[7
]}

Brown, D. N. ^{[7
,46
]}

Cahn, R. N. ^{[7
]}

Jacobsen, R. G. ^{[7
]}

Kerth, L. T. ^{[7
]}

Kolomensky, Yu. G. ^{[7
]}

Kukartsev, G. ^{[7
]}

Lynch, G. ^{[7
]}

Osipenkov, I. L. ^{[7
]}

Ronan, M. T. ^{[7
]}

Tackmann, K. ^{[7
]}

Tanabe, T. ^{[7
]}

Hawkes, C. M. ^{[8
]}

Soni, N. ^{[8
]}

Watson, A. T. ^{[8
]}

Koch, H. ^{[9
]}

Schroeder, T. ^{[9
]}

Walker, D. ^{[10
]}

Asgeirsson, D. J. ^{[11
]}

Fulsom, B. G. ^{[11
]}

Hearty, C. ^{[11
]}

Mattison, T. S. ^{[11
]}

McKenna, J. A. ^{[11
]}

Barrett, M. ^{[12
]}

Khan, A. ^{[12
]}

Blinov, V. E. ^{[13
]}

Bukin, A. D. ^{[13
]}

Buzykaev, A. R. ^{[13
]}

Druzhinin, V. P. ^{[13
]}

Golubev, V. B. ^{[13
]}

Onuchin, A. P. ^{[13
]}

Serednyakov, S. I. ^{[13
]}

Skovpen, Yu. I. ^{[13
]}

机构：

[1] CNRS, IN2P3, Phys Particules Lab, F-74941 Annecy Le Vieux, France

[2] Univ Savoie, F-74941 Annecy Le Vieux, France

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

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

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

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

[7] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

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

[9] Ruhr Univ Bochum, Inst Expt Phys 1, D-44780 Bochum, Germany

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

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

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

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

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

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

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

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

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

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

[20] CALTECH, Pasadena, CA 91125 USA

[21] Univ Cincinnati, Cincinnati, OH 45221 USA

[22] Univ Colorado, Boulder, CO 80309 USA

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

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

[25] Tech Univ Dresden, Inst Kernund Teilchenphys, D-01062 Dresden, Germany

[26] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France

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

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

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

[30] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy

[31] Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy

[32] Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy

[33] Harvard Univ, Cambridge, MA 02138 USA

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

[35] Humboldt Univ, Inst Phys, D-12489 Berlin, 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] CNRS, IN2P3, Lab Accelerateur Lineaire, F-91898 Orsay, France

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

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

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

[44] Univ London, London E1 4NS, England

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

[46] Univ Louisville, Louisville, KY 40292 USA

[47] Johannes Gutenberg Univ Mainz, Inst Kernphys, D-55099 Mainz, Germany

[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 D | 2008年 / 78卷 / 07期

基金：

英国科学技术设施理事会; 加拿大自然科学与工程研究理事会;

关键词：

D O I：

10.1103/PhysRevD.78.071101

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a measurement of the branching fractions for the Cabibbo-favored radiative decay D-0 ->(K)overbar(*0)gamma and the Cabibbo-suppressed radiative decay D-0 ->phi gamma. These measurements are based on a data sample corresponding to an integrated luminosity of 387.1 fb(-1) and recorded with the BABAR detector at the PEP-II e(+)e(-) asymmetric-energy collider operating at center-of-mass energies 10.58 and 10.54 GeV. We measure the branching fractions relative to the well-studied decay D-0 -> K-pi(+) and find B(D-0 ->(K)overbar(*0)gamma)/B(D-0 -> K-pi(+))=(8.43 +/- 0.51 +/- 0.70)x10(-3) and B(D-0 ->phi gamma)/B(D-0 -> K-pi(+))=(7.15 +/- 0.78 +/- 0.69)x10(-4), where the first error is statistical and the second is systematic. This is the first observation of the decay mode D-0 ->(K)overbar(*0)gamma.

引用

页数：9

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