ETA-DECAYS INTO 3 PIONS

被引：16

作者：

AMSLER, C

ARMSTRONG, DS

AUGUSTIN, I

BAKER, CA

BARNETT, BM

BATTY, CJ

BEUCHERT, K

BIRIEN, P

BLUM, P

BOSSINGHAM, R

BRAUNE, K

BROSE, J

BUGG, DV

BURCHELL, M

CASE, T

COOPER, A

CRAMER, O

CROWE, KM

DEGENER, T

DIETZ, HP

VONDOMBROWSKI, S

DOSER, M

DUNNWEBER, W

ENGELHARDT, D

ENGLERT, M

FAESSLER, MA

FELIX, C

FOLGER, G

GLANTZ, R

HACKMANN, R

HADDOCK, RP

HEINSIUS, FH

HERZ, M

HESSEY, NP

HIDAS, P

ILLINGER, P

JAMNIK, D

KALINOWSKY, H

KAMMLE, B

KIEL, T

KISIEL, J

KLEMPT, E

KOBEL, M

KOCH, H

KOLO, C

KONIGSMANN, K

KUNZE, M

LAKATA, M

LANDUA, R

LUDEMANN, J

机构：

[1] UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720

[2] RUHR UNIV BOCHUM,D-44780 BOCHUM,GERMANY

[3] UNIV BONN,D-53115 BONN,GERMANY

[4] HUNGARIAN ACAD SCI,H-1525 BUDAPEST,HUNGARY

[5] RUTHERFORD APPLETON LAB,DIDCOT OX11 0QX,OXON,ENGLAND

[6] CERN,CH-1211 GENEVA,SWITZERLAND

[7] UNIV HAMBURG,D-22761 HAMBURG,GERMANY

[8] UNIV KARLSRUHE,D-76021 KARLSRUHE,GERMANY

[9] UNIV LONDON QUEEN MARY & WESTFIELD COLL,LONDON E1 4NS,ENGLAND

[10] UNIV CALIF LOS ANGELES,LOS ANGELES,CA 90024

[11] UNIV MAINZ,D-55099 MAINZ,GERMANY

[12] UNIV MUNICH,D-80333 MUNICH,GERMANY

[13] CARNEGIE MELLON UNIV,PITTSBURGH,PA 15213

[14] CTR RECH NUCL,F-67037 STRASBOURG,FRANCE

来源：

PHYSICS LETTERS B | 1995年 / 346卷 / 1-2期

关键词：

D O I：

10.1016/0370-2693(95)00094-2

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The branching ratios Gamma(eta --> 3 pi(0))/Gamma(eta --> pi(+)pi(-)pi(0)) = 1.44 +/- 0.09 +/- 0.10 and Gamma(eta --> gamma gamma)/Gamma(eta --> pi(+)pi(-)pi(0)) = 1.78 +/- 0.10 +/- 0.13 have been determined using the Crystal Barrel detector at LEAR. The latter ratio yields a partial width of Gamma(eta --> pi(+)pi(-)pi(0)) = 0.26 +/- 0.03 keV using the known value for Gamma(eta -->gamma gamma). The eta --> pi(+)pi(-)pi(0). Dalitz plot is compared to the predictions of chiral perturbation theory.

引用

页码：203 / 207

页数：5

共 50 条

[1] eta-decays into three pions
Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics, 1995, 346 (1-2):
[2] ETA-DECAYS, PCAC, AND QUARKS
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ANNALS OF PHYSICS, 1982, 141 (01) : 116 - 133
[3] NEUTRAL HADRONIC ETA'-DECAYS AND ETA-DECAYS AND ELECTROMAGNETIC MIXING
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[4] TEST OF CHIRAL PERTURBATION-THEORY IN ETA-DECAYS
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BIRIEN, P
BISTIRLICH, J
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BOSSY, H
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ENGELHARDT, D
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ILLINGER, P
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[5] DIFFICULTIES OF STATIC QUARK MODEL IN CASE OF ETA-DECAYS
MOBIUS, P
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PHYSICS LETTERS, 1966, 22 (05): : 684 - +
[6] PI-O AND ETA-DECAYS INTO LEPTON PAIRS
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[7] A CURRENT-ALGEBRA CALCULATION OF CHARGED RADIATIVE ETA-DECAYS
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[8] MEASUREMENTS OF TAU-DECAYS TO 3 PIONS
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MARUYAMA, T
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SMITH, JG
VENUTI, JP
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PHYSICS LETTERS B, 1987, 198 (02) : 297 - 301
[9] ETA PRODUCTION BY PIONS
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NUCLEAR PHYSICS B, 1970, B 16 (01) : 35 - +
[10] MEASUREMENT OF TAU-DECAYS INTO 3 CHARGED PIONS
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BINDER, U
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YAGIL, A
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MATTHIESEN, U
SCHECK, H
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YOON, TS
YUN, JC
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COPPAGE, D
DAVIS, R
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ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1986, 33 (01): : 7 - 12

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