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Titolo:
Study of the gamma gamma decays of the chi(c2)(1(3)P(2)) and chi(c omicron)(1(3)P(omicron)) charmonium resonances - art. no. 052002
Autore:
Ambrogiani, M; Argiro, S; Bagnasco, S; Baldini, W; Bettoni, D; Borreani, G; Buzzo, A; Calabrese, R; Ceccucci, A; Cester, R; Dalpiaz, P; Fan, X; Garzoglio, G; Gollwitzer, KE; Hahn, A; Jin, S; Kasper, J; Lasio, G; Lo Vetere, M; Luppi, E; Maas, P; Macri, M; Mandelkern, M; Marchetto, F; Marinelli, M; Marsh, W; Martini, M; Menichetti, E; Mussa, R; Obertino, MM; Pallavicini, M; Pastrone, N; Patrignani, C; Pedlar, TK; Peoples, J; Pordes, S; Robutti, E; Roccuzzo, B; Rosen, J; Rumerio, P; Santroni, A; Savrie, M; Schultz, J; Seth, KK; Stancari, G; Stancari, M; Streets, J; Tomaradze, A; Werkema, S; Zioulas, G;
Indirizzi:
Ist Nazl Fis Nucl, I-44100 Ferrara, Italy Ist Nazl Fis Nucl Ferrara Italy I-44100 Fis Nucl, I-44100 Ferrara, Italy Fermi Natl Accelerator Lab, Batavia, IL 60510 USA Fermi Natl Accelerator Lab Batavia IL USA 60510 ab, Batavia, IL 60510 USA Univ Ferrara, I-44100 Ferrara, Italy Univ Ferrara Ferrara Italy I-44100Univ Ferrara, I-44100 Ferrara, Italy Ist Nazl Fis Nucl, I-16146 Genoa, Italy Ist Nazl Fis Nucl Genoa Italy I-16146 azl Fis Nucl, I-16146 Genoa, Italy Univ Genoa, I-16146 Genoa, Italy Univ Genoa Genoa Italy I-16146Univ Genoa, I-16146 Genoa, Italy Univ Calif Irvine, Irvine, CA 92697 USA Univ Calif Irvine Irvine CA USA 92697 Calif Irvine, Irvine, CA 92697 USA Northwestern Univ, Evanston, IL 60208 USA Northwestern Univ Evanston IL USA 60208 tern Univ, Evanston, IL 60208 USA Ist Nazl Fis Nucl, I-10125 Turin, Italy Ist Nazl Fis Nucl Turin Italy I-10125 azl Fis Nucl, I-10125 Turin, Italy Univ Turin, I-10125 Turin, Italy Univ Turin Turin Italy I-10125Univ Turin, I-10125 Turin, Italy
Titolo Testata:
PHYSICAL REVIEW D
fascicolo: 5, volume: 6205, anno: 2000,
pagine: 2002 -
SICI:
0556-2821(20000901)6205:5<2002:SOTGGD>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
PHOTON-PHOTON COLLISIONS; 2-PHOTON COLLISIONS; PARTIAL-WIDTH; FERMILAB; ANNIHILATIONS; QUARKONIA; CHI(C2); PROTON; STATES; QCD;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
37
Recensione:
Indirizzi per estratti:
Indirizzo: Ambrogiani, M Ist Nazl Fis Nucl, I-44100 Ferrara, Italy Ist Nazl Fis NuclFerrara Italy I-44100 100 Ferrara, Italy
Citazione:
M. Ambrogiani et al., "Study of the gamma gamma decays of the chi(c2)(1(3)P(2)) and chi(c omicron)(1(3)P(omicron)) charmonium resonances - art. no. 052002", PHYS REV D, 6205(5), 2000, pp. 2002

Abstract

We report the branching ratios of the chi(c2)(1(3)P(2)) and chi(c0)(1(3)P(0)) charmonium resonances to two photons using event samples collected by Fermilab experiment E835 in the reactions (p) over bar p --> chi(c2)(1(3)P(2))[chi(c0)(1(3)P(0))] Our result for the chi(c2) is B(chi(c2) --> gamma gamma) = (1.35 +/- 0.25 +/- 0.12) X 10(-4). We set a 95% upper limit for the chi(c0) branching ratio B(chi(c0) --> gamma gamma) at 2.09 X 10(-4).

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Documento generato il 03/12/20 alle ore 20:50:48