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Titolo:
SEARCH FOR THE DECAY PI(0)-]GAMMA-X
Autore:
DREES RM; WALTHAM CE; BLEVIS I; HASINOFF M; VIRTUE CJ; GUMPLINGER P; STETZ A; POUTISSOU JM;
Indirizzi:
UNIV BRITISH COLUMBIA,DEPT PHYS VANCOUVER V6T 1Z1 BC CANADA OREGON STATE UNIV,DEPT PHYS CORVALLIS OR 97331 TRIUMF VANCOUVER V6T 2A3 BC CANADA CERN,DIV EP CH-1211 GENEVA SWITZERLAND CARLETON UNIV,CTR RES PARTICLE PHYS OTTAWA K1S 5B6 ONTARIO CANADA LAURENTIAN UNIV,DEPT PHYS SUDBURY P3E 2C6 ONTARIO CANADA
Titolo Testata:
Physical review. D. Particles and fields
fascicolo: 9, volume: 49, anno: 1994,
pagine: 4937 - 4940
SICI:
0556-2821(1994)49:9<4937:SFTDP>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
BOSONS;
Tipo documento:
Note
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
17
Recensione:
Indirizzi per estratti:
Citazione:
R.M. Drees et al., "SEARCH FOR THE DECAY PI(0)-]GAMMA-X", Physical review. D. Particles and fields, 49(9), 1994, pp. 4937-4940

Abstract

We present the results of a search for exotic bosons produced in the decay pi0 --> Xgamma. A low energy pi- beam at TRIUMF was stopped in aliquid hydrogen target to produce the reactions pi- p --> ngamma and pi-p --> npi0, pi0 --> gamma. The gamma rays from these reactions weredetected in a sodium iodide crystal. From the energy distributions weextract a branching ratio limit for GAMMA(pi0 --> gammaX)/GAMMA(pi0 --> gammagamma) of (2-7) X 10(-3) for X masses of 25-100 MeV/c2 (90% C.L.). In contrast with other experimental limits this branching ratio limit is valid for an reasonable X lifetimes (> 10(-23) sec).

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Documento generato il 05/12/20 alle ore 13:43:58