Study of e+e-→Λ(Λ)over-bar, Λ(Σ)over-bar0, Σ0(Σ)over-bar0 using initial state radiation with BABAR

被引：136

作者：

Aubert, B. ^{[1
]}

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.

Khan, A.

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] Univ Bari, Dipartimento Fis, I-70126 Bari, Italy

[5] Ist Nazl Fis Nucl, 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] Univ Dortmund, Inst Phys, D-44221 Dortmund, Germany

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

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

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

[28] Univ Ferrara, Dipartimento Fis, I-44100 Ferrara, Italy

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

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

[31] Ist Nazl Fis Nucl, 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] Univ London Imperial Coll Sci Technol & Med, London SW7 2AZ, England

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

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

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

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

[40] Univ Paris 11, F-91898 Orsay, France

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

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

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

[44] Univ London, Queen Mary, 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] Univ Manchester, Manchester M13 9PL, Lancs, England

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

[49] Univ Massachusetts, Amherst, MA 01003 USA

[50] MIT, Nucl Sci Lab, Cambridge, MA 02139 USA

来源：

PHYSICAL REVIEW D | 2007年 / 76卷 / 09期

基金：

英国科学技术设施理事会;

关键词：

D O I：

10.1103/PhysRevD.76.092006

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the e(+)e(-)->Lambda(Lambda) over bar gamma, Lambda(Sigma) over bar (0)gamma, Sigma(0)(Sigma) over bar (0)gamma processes using 230 fb(-1) of integrated luminosity collected by the BABAR detector at e(+)e(-) center-of-mass energy of 10.58 GeV. From the analysis of the baryon-antibaryon mass spectra the cross sections for e(+)e(-)->Lambda(Lambda) over bar, Lambda(Sigma) over bar (0), Sigma(0)(Sigma) over bar>(0) are measured in the dibaryon mass range from threshold up to 3 GeV/c(2). The ratio of electric and magnetic form factors, |G(E)/G(M)|, is measured for e(+)e(-)->Lambda(Lambda) over bar, and limits on the relative phase between Lambda form factors are obtained. We also measure the J/psi ->Lambda(Lambda) over bar, Sigma(0)(Sigma) over bar (0), and psi(2S)->Lambda(Lambda) over bar branching fractions.

引用

页数：23

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