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(-).

引用

页码：1 / 25

页数：25

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