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Titolo:
Study of the chi(c0)(1(3)P(0)) state of charmonium formed in (p)over-barp annihilations
Autore:
Ambrogiani, M; Argiro, S; Bagnasco, S; Baldini, W; Bettoni, D; Borreani, G; Buzzo, A; Calabrese, R; 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; 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 Univ Ferrara, I-44100 Ferrara, Italy Univ Ferrara Ferrara Italy I-44100Univ Ferrara, 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 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 LETTERS
fascicolo: 15, volume: 83, anno: 1999,
pagine: 2902 - 2905
SICI:
0031-9007(19991011)83:15<2902:SOTCSO>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
P-WAVE QUARKONIUM; DECAYS; J/PSI; QCD; FERMILAB;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
18
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 chi(c0)(1(3)P(0)) state of charmonium formed in (p)over-barp annihilations", PHYS REV L, 83(15), 1999, pp. 2902-2905

Abstract

The resonance parameters of chi(c0) the 1(3)P(0) resonance of charmonium, have been measured at the Fermilab Antiproton Accumulator by means of the reaction (p) over bar p --> chi(c0) --> gamma J/psi --> gamma(e(+)e(-)). Theresults are M(chi(c0)) = 3417.4(-1.9)(+1.8) +/- 0.2 MeV/c(2), Gamma(chi(c0)) = 16.6(-3.7)(+5.2) +/- 0.1 MeV, and Gamma(chi(c0) --> (p) over bar p) x B(chi(c0) --> J/psi gamma) x B(J/psi --> e(+)e(-)) = 2.89(-0.53)(+0.67) +/-0.14 eV. Using known branching ratios we also obtain Gamma(chi(c0) --> (p)over bar p) = 8.0(-1.5)(-1.9)(+1.9)(+3.5) keV. These results are discussedin relation to the other chi(cJ) states and to theoretical predictions.

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Documento generato il 29/11/20 alle ore 08:26:46