MEASUREMENT OF THE GAMMA-GAMMA-PARTIAL WIDTH OF THE CHI-2 CHARMONIUM RESONANCE

被引：40

作者：

ARMSTRONG, TA

BETTONI, D

BHARADWAJ, V

BIINO, C

BORREANI, G

BROEMMELSIEK, D

BUZZO, A

CALABRESE, R

CECCUCCI, A

CESTER, R

CHURCH, M

DALPIAZ, P

DALPIAZ, PF

DIBENEDETTO, R

DIMITROYANNIS, D

FABBRI, M

FAST, J

GIANOLI, A

GINSBURG, CM

GOLLWITZER, K

HAHN, A

HASAN, MA

HSUEH, S

LEWIS, R

LUPPI, E

MACRI, M

MAJEWSKA, AM

MANDELKERN, M

MARCHETTO, F

MARINELLI, M

MARQUES, J

MARSH, W

MARTINI, M

MASUZAWA, M

MENICHETTI, E

MIGLIORI, A

MUSSA, R

PALESTINI, S

PALLAVICINI, M

PASTRONE, N

PATRIGNANI, C

PEOPLES, J

PESANDO, L

PETRUCCI, F

PIA, MG

PORDES, S

RAPIDIS, PA

RAY, R

REID, J

RINAUDO, G

机构：

[1] FERMILAB NATL ACCELERATOR LAB,BATAVIA,IL 60510

[2] IST NAZL FIS NUCL,I-44100 FERRARA,ITALY

[3] UNIV FERRARA,I-44100 FERRARA,ITALY

[4] IST NAZL FIS NUCL,I-16146 GENOA,ITALY

[5] UNIV GENOA,I-16146 GENOA,ITALY

[6] UNIV CALIF IRVINE,IRVINE,CA 92717

[7] NORTHWESTERN UNIV,EVANSTON,IL 60208

[8] IST NAZL FIS NUCL,I-10125 TURIN,ITALY

[9] UNIV TURIN,I-10125 TURIN,ITALY

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 70卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.70.2988

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The E760 Collaboration has studied the reaction ppBAR --> chi2 --> gammagamma using a hydrogen gas jet target in the Fermilab antiproton accumulator ring. The following values are obtained for the branching ratio and partial width to two photons; B(chi2 --> gammagamma) = (1.60 +/- 0.45) X 10(-4) and GAMMA(chi2 --> gammagamma) = 321 +/- 95 eV.

引用

页码：2988 / 2991

页数：4

共 14 条

[1] CHARMONIUM PRODUCTION IN PHOTON-PHOTON COLLISIONS [J].

AIHARA, H ;

ALSTONGARNJOST, M ;

AVERY, RE ;

BARBAROGALTIERI, A ;

BARKER, AR ;

BARNETT, BA ;

BAUER, DA ;

BAY, A ;

BENGTSSON, HU ;

BOBBINK, GJ ;

BUCHANAN, CD ;

BUIJS, A ;

CALDWELL, DO ;

CHAO, HY ;

CHUN, SB ;

CLARK, AR ;

COWAN, GD ;

CRANE, DA ;

DAHL, OI ;

DAOUDI, M ;

DERBY, KA ;

EASTMAN, JJ ;

EBERHARD, PH ;

EDBERG, TK ;

EISNER, AM ;

ENOMOTO, R ;

ERNE, FC ;

FAIRFIELD, KH ;

HAUPTMAN, JM ;

HOFMANN, W ;

HYLEN, J ;

KAMAE, T ;

KAYE, HS ;

KENNEY, RW ;

KHACHERYAN, S ;

KOFLER, RR ;

LANGEVELD, WGJ ;

LAYTER, JG ;

LIN, WT ;

LINDE, FL ;

LOKEN, SC ;

LU, A ;

LYNCH, GR ;

MADARAS, RJ ;

MAGNUSON, BD ;

MASEK, GE ;

MATHIS, LG ;

MATTHEWS, JAJ ;

MAXFIELD, SJ ;

MILLER, ES .

PHYSICAL REVIEW LETTERS, 1988, 60 (23) :2355-2358

[2]

ARMSTRONG TA, IN PRESS

[3] DIRECT OBSERVATION AND PARTIAL-WIDTH MEASUREMENT OF GAMMA-GAMMA-DECAY OF CHARMONIUM STATES [J].

BAGLIN, C ;

BAIRD, S ;

BASSOMPIERRE, G ;

BORREANI, G ;

BRIENT, JC ;

BROLL, C ;

BROM, JM ;

BUGGE, L ;

BURAN, T ;

BURQ, JP ;

BUSSIERE, A ;

BUZZO, A ;

CESTER, R ;

CHEMARIN, M ;

CHEVALLIER, M ;

ESCOUBES, B ;

FAY, J ;

FERRONI, S ;

GRACCO, V ;

GUILLAUD, JP ;

KHANARONSEN, E ;

ILLE, B ;

KIRSEBOM, K ;

LAMBERT, M ;

LEISTAM, L ;

LUNDBY, A ;

MACRI, M ;

MARCHETTO, F ;

MENICHETTI, E ;

MORCH, C ;

MOUELLIC, B ;

PASTRONE, N ;

PETRILLO, L ;

PIA, MG ;

POOLE, J ;

POULET, M ;

RINAUDO, G ;

SANTRONI, A ;

SEVERI, M ;

SKJEVLING, G ;

STUGU, B .

PHYSICS LETTERS B, 1987, 187 (1-2) :191-197

[4]

BARNES T, ORNLCCIP9205 REP

[5] THE E760 LEAD-GLASS CENTRAL CALORIMETER - DESIGN AND INITIAL TEST-RESULTS [J].

BARTOSZEK, L ;

BHARADWAJ, V ;

CHURCH, MD ;

HAHN, AA ;

PEOPLES, J ;

PORDES, SH ;

RAPIDIS, PA ;

WERKEMA, SJ ;

AGAHI, D ;

BROEMMELSIEK, DR ;

FAST, JE ;

GEE, M ;

GOLLWITZER, KE ;

MANDELKERN, MA ;

MARQUES, JL ;

SCHULTZ, J ;

WEBER, MF ;

GINSBURG, CM ;

MASUZAWA, M ;

RAY, RE ;

ROSEN, JL ;

TROKENHEIM, S ;

ZHAO, JL ;

ARMSTRONG, TA ;

HUFFORD, GE ;

LEWIS, RA ;

MAJEWSKA, AM ;

REID, JD ;

SMITH, GA ;

HASAN, MA ;

BIINO, C ;

PALESTINI, S .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1991, 301 (01) :47-60

[6] RIGOROUS QCD PREDICTIONS FOR DECAYS OF P-WAVE QUARKONIA [J].

BODWIN, GT ;

BRAATEN, E ;

LEPAGE, GP .

PHYSICAL REVIEW D, 1992, 46 (05) :R1914-R1918

[7] MEASUREMENT OF GAMMA-GAMMA-WIDTHS OF CHARMONIUM STATES [J].

CHEN, WY ;

MCILWAIN, RL ;

MILLER, DH ;

NG, CR ;

SCHAFFNER, SF ;

SHIBATA, EI ;

YAO, WM ;

SPARKS, K ;

THORNDIKE, EH ;

WANG, CH ;

ALAM, MS ;

KIM, IJ ;

LI, WC ;

LOU, XC ;

SUN, CR ;

WANG, PN ;

ZOELLER, MI ;

BORTOLETTO, D ;

GOLDBERG, M ;

HORWITZ, N ;

JAIN, V ;

MESTAYER, MD ;

MONETI, GC ;

SHARMA, V ;

SHIPSEY, IPJ ;

SKWARNICKI, T ;

THULASIDAS, M ;

CSORNA, SE ;

LETSON, T ;

ALEXANDER, J ;

ARTUSO, M ;

BEBEK, C ;

BERKELMAN, K ;

CASSEL, DG ;

CHEU, E ;

COFFMAN, DM ;

CRAWFORD, G ;

DEWIRE, JW ;

DELL, PS ;

EHRLICH, R ;

GALIK, RS ;

GITTELMAN, B ;

GRAY, SW ;

HALLING, AM ;

HARTILL, DL ;

HELTSLEY, BK ;

KANDASWAMY, J ;

KATAYAMA, N ;

KREINICK, DL ;

LEWIS, JD .

PHYSICS LETTERS B, 1990, 243 (1-2) :169-174

[8]

FAST JE, 1992, THESIS U CALIFORNIA

[9] QUARKONIUM ANNIHILATION RATES [J].

KWONG, WW ;

MACKENZIE, PB ;

ROSENFELD, R ;

ROSNER, JL .

PHYSICAL REVIEW D, 1988, 37 (11) :3210-3215

[10]

LEE R, 1985, THESIS SLAC, P282

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