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.
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页码：2988 / 2991
页数：4
相关论文
共 14 条
  • [1] CHARMONIUM PRODUCTION IN PHOTON-PHOTON COLLISIONS
    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
    [J]. 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
    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
    [J]. 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
    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
    [J]. 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
    BODWIN, GT
    BRAATEN, E
    LEPAGE, GP
    [J]. PHYSICAL REVIEW D, 1992, 46 (05) : R1914 - R1918
  • [7] MEASUREMENT OF GAMMA-GAMMA-WIDTHS OF CHARMONIUM STATES
    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
    [J]. PHYSICS LETTERS B, 1990, 243 (1-2) : 169 - 174
  • [8] FAST JE, 1992, THESIS U CALIFORNIA
  • [9] QUARKONIUM ANNIHILATION RATES
    KWONG, WW
    MACKENZIE, PB
    ROSENFELD, R
    ROSNER, JL
    [J]. PHYSICAL REVIEW D, 1988, 37 (11): : 3210 - 3215
  • [10] LEE R, 1985, THESIS SLAC, P282
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