e+e- → π+π-π+π-, K+K-π+π-, and K+K-K+K- cross sections at center-of-mass energies 0.5-4.5 GeV measured with initial-state radiation -: art. no. 052001

被引：136
|
作者：
Aubert, B [1 ]
Barate, R
Boutigny, D
Couderc, F
Karyotakis, Y
Lees, JP
Poireau, V
Tisserand, V
Zghiche, A
Grauges-Pous, E
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
Lynch, G
Mir, LM
Oddone, PJ
Orimoto, TJ
Pripstein, M
Roe, NA
Ronan, MT
Wenzel, WA
Barrett, M
Ford, KE
Harrison, TJ
Hart, AJ
Hawkes, CM
机构：
[1] Phys Particules Lab, F-74941 Annecy Le Vieux, France
[2] Univ Autonoma Barcelona, IFAE, E-08193 Barcelona, Spain
[3] Univ Bari, Dipartimento 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] Univ Calif Berkeley, Berkeley, CA 94720 USA
[8] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA
[9] Univ Birmingham, Birmingham B15 2TT, W Midlands, England
[10] Ruhr Univ Bochum, Inst Expt Phys 1, 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] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy
[32] Univ Genoa, Dipartimento Fis, 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] Lab Accelerateur Lineaire, F-91898 Orsay, France
[40] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA
[41] Univ Liverpool, Liverpool L69 72E, Merseyside, England
[42] Univ London, Queen Mary, London E1 4NS, England
[43] Univ London Royal Holloway & Bedford New Coll, Egham TW20 0EX, Surrey, England
[44] Univ Louisville, Louisville, KY 40292 USA
[45] Univ Manchester, Manchester M13 9PL, Lancs, England
[46] Univ Maryland, College Pk, MD 20742 USA
[47] Univ Massachusetts, Amherst, MA 01003 USA
[48] MIT, Nucl Sci Lab, Cambridge, MA 02139 USA
[49] McGill Univ, Montreal, PQ H3A 2T8, Canada
[50] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy
来源：
PHYSICAL REVIEW D | 2005年 / 71卷 / 05期
关键词：
D O I：
10.1103/PhysRevD.71.052001
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We study the process e(+)e- -> pi(+)pi(-)pi(+)pi(-) gamma, with a hard photon radiated from the initial state. About 60 000 fully reconstructed events have been selected from 89 fb(-1) of BABAR data. The invariant mass of the hadronic final state defines the effective e(+)e(-) e(+)e(-) center-of-mass energy, so that these data can be compared with the corresponding direct e(+)e(-) measurements. From the 4 pi -mass spectrum, the cross section for the process e(+)e(-) -> pi(+)pi(-)pi(+)pi(-) is measured for center-of-mass energies from 0.6 to 4.5 GeV. The uncertainty in the cross section measurement is typically 5%. We also measure the cross sections for the final states K+K- pi(+)pi(-) and K+K-K+K-. We observe the J/psi in all three finial states and measure the corresponding branching fractions. We search for X(3872) in J/psi(-> mu(+)mu(-))pi(+)pi(-) and obtain an upper limit on the product of the e(+)e(-) width of the X(3872) and the branching fraction for X(3872) -> J/psi pi(+)pi(-).
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页码：1 / 25
页数：25
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