Measurement of the spin of the Ξ(1530) resonance

被引：33

作者：

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

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

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

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

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

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

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

Zghiche, A. ^{[1
,2
]}

Tico, J. Garra ^{[3
]}

Grauges, E. ^{[3
]}

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

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

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

Eigen, G. ^{[6
]}

Stugu, B. ^{[6
]}

Sun, L. ^{[6
]}

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

Battaglia, M. ^{[7
]}

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

Button-Shafer, J. ^{[7
]}

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

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

Kadyk, J. A. ^{[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
]}

Wenzel, W. A. ^{[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
]}

Cuhadar-Donszelmann, T. ^{[11
]}

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

Hearty, C. ^{[11
]}

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

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

Barrett, M. ^{[12
]}

Khan, A. ^{[12
]}

Saleem, M. ^{[12
]}

Teodorescu, L. ^{[12
]}

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

Bukin, A. D. ^{[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] Univ Bari, Dipartmento 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, 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 Kern & 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] Univ Ferrara, Dipartmento 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] Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy

[32] Ist Nazl Fis Nucl, 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 Phys, D-76021 Karlsruhe, Germany

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

[41] Univ Paris 11, 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] 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 | 2008年 / 78卷 / 03期

基金：

加拿大自然科学与工程研究理事会; 英国科学技术设施理事会; 美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevD.78.034008

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The properties of the Xi(1530) resonance are investigated in the Lambda(+)(c)->Xi(-)pi K-+(+) decay process. The data sample was collected with the BABAR detector at the SLAC PEP-II asymmetric-energy e(+)e(-) collider operating at center-of-mass energies 10.58 and 10.54 GeV. The corresponding integrated luminosity is approximately 230 fb(-1). The spin of the Xi(1530) is established to be 3/2. The existence of an S-wave amplitude in the Xi(-)pi(+) system is inferred, and its interference with the Xi(1530)(0) amplitude provides the first clear demonstration of the Breit-Wigner phase motion expected for the Xi(1530). The P-1(cos theta(-)(Xi)) Legendre polynomial moment indicates the presence of a significant S-wave amplitude for Xi(-)pi(+) mass values above 1.6 GeV/c(2), and a dip in the mass distribution at approximately 1.7 GeV/c(2) is interpreted as due to the coherent addition of a Xi(1690)(0) contribution to this amplitude. This would imply J(P)=1/2(-) for the Xi(1690). Attempts at fitting the Xi(1530)(0) line shape yield unsatisfactory results, and this failure is attributed to interference effects associated with the amplitudes describing the K+pi(+) and/or Xi K--(+) systems.

引用

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