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Titolo:
MEASUREMENT OF THE INDUCED PSEUDOSCALAR COUPLING USING RADIATIVE MUON-CAPTURE ON HYDROGEN
Autore:
WRIGHT DH; AHMAD S; ARMSTRONG DS; AZUELOS G; BERTL W; BLECHER M; CHEN CQ; DEPOMMIER P; DOYLE BC; VONEGIDY T; GORRINGE TP; GUMPLINGER P; HASINOFF MD; HEALEY D; JONKMANS G; LARABEE AJ; MACDONALD JA; MCDONALD SC; MUNRO M; POUTISSOU JM; POUTISSOU R; ROBERTSON BC; SAMPLE DG; SAETTLER E; SIGLER CN; TAYLOR GN; ZHANG NS;
Indirizzi:
TRIUMF,4004 WESBROOK MALL VANCOUVER BC V6T 2A3 CANADA UNIV BRITISH COLUMBIA VANCOUVER BC V6T 1Z1 CANADA COLL WILLIAM & MARY WILLIAMSBURG VA 23187 UNIV MONTREAL QUEBEC CITY PQ H3C 3J7 CANADA PAUL SCHERRER INST CH-5232 VILLIGEN SWITZERLAND VIRGINIA POLYTECH INST & STATE UNIV BLACKSBURG VA 24060 UNIV KENTUCKY LEXINGTON KY 40506 UNIV MELBOURNE PARKVILLE VIC 3052 AUSTRALIA QUEENS UNIV KINGSTON ON K7L 3N6 CANADA
Titolo Testata:
Physical review. C. Nuclear physics
fascicolo: 1, volume: 57, anno: 1998,
pagine: 373 - 390
SICI:
0556-2813(1998)57:1<373:MOTIPC>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
VECTOR FORM-FACTOR; TRIUMF; CURRENTS; ELECTROPRODUCTION; CONSTANT; DECAY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
69
Recensione:
Indirizzi per estratti:
Citazione:
D.H. Wright et al., "MEASUREMENT OF THE INDUCED PSEUDOSCALAR COUPLING USING RADIATIVE MUON-CAPTURE ON HYDROGEN", Physical review. C. Nuclear physics, 57(1), 1998, pp. 373-390

Abstract

The photon energy spectrum from the elementary process mu(-)p-->nu(mu)n gamma was measured using a photon pair-spectrometer at the TRIUMF cyclotron. Various sources of backgrounds are discussed in detail and evaluated. From the final spectrum the partial branching ratio R-gamma and the pseudoscalar coupling g(p) were extracted. The values obtainedare R-gamma(k>60 MeV)=(2.10+/-0.21)X 10(-8) and g(p)(q(2)=-0.88m(mu)(2))=(9.8 +/-0.7+/-0.3)g(a)(0), respectively. The first error is the quadrature sum of statistical and systematic errors, while the second error is due to the uncertainty in lambda(op), the transition rate of the p mu p molecule from ortho to para states. This measurement of g(p),the most precise to date, agrees with all but one of the previous measurements. However it is 1.46 times the value predicted by the partially conserved axial current hypothesis and pion pole dominance.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/11/20 alle ore 12:55:49