The electromagnetic decay Sigma(0)(1385) -> Lambda gamma was studied using the CLAS detector at the Thomas Jefferson National Accelerator Facility. A real photon beam with a maximum energy of 3.8 GeV was incident on a proton target, producing an exclusive final state of K(+)Sigma*(0). We report the decay widths ratio Sigma(0)(1385) -> Lambda gamma/Sigma(0)(1385) -> Lambda pi(0) = 1.42 +/- 0.12(stat)(-0.07)(+0.11)(sys)%. This ratio is larger than most theoretical predictions by factors ranging from 1.5-3, but is consistent with the only other experimental measurement. From the reported ratio we calculate the partial width and electromagnetic transition magnetic moment for Sigma(0)(1385) -> Lambda gamma.

Keller, D., Hicks, K., Adhikari, K., Adhikari, K., Adikaram, D., Aghasyan, M., et al. (2011). Electromagnetic decay of the Sigma(0)(1385) to Lambda gamma. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 83(7), 072004-1-072004-14 [10.1103/PhysRevD.83.072004].

Electromagnetic decay of the Sigma(0)(1385) to Lambda gamma

D'ANGELO, ANNALISA;PISANO, SILVIA;
2011-04-21

Abstract

The electromagnetic decay Sigma(0)(1385) -> Lambda gamma was studied using the CLAS detector at the Thomas Jefferson National Accelerator Facility. A real photon beam with a maximum energy of 3.8 GeV was incident on a proton target, producing an exclusive final state of K(+)Sigma*(0). We report the decay widths ratio Sigma(0)(1385) -> Lambda gamma/Sigma(0)(1385) -> Lambda pi(0) = 1.42 +/- 0.12(stat)(-0.07)(+0.11)(sys)%. This ratio is larger than most theoretical predictions by factors ranging from 1.5-3, but is consistent with the only other experimental measurement. From the reported ratio we calculate the partial width and electromagnetic transition magnetic moment for Sigma(0)(1385) -> Lambda gamma.
21-apr-2011
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/04 - FISICA NUCLEARE E SUBNUCLEARE
English
Con Impact Factor ISI
QUARK-MODEL; RADIATIVE DECAYS; HYPERONS; BARYONS; STRANGENESS; DECUPLET
Clas Collaboration
http://prd.aps.org/abstract/PRD/v83/i7/e072004
Keller, D., Hicks, K., Adhikari, K., Adhikari, K., Adikaram, D., Aghasyan, M., et al. (2011). Electromagnetic decay of the Sigma(0)(1385) to Lambda gamma. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 83(7), 072004-1-072004-14 [10.1103/PhysRevD.83.072004].
Keller, D; Hicks, K; Adhikari, K; Adhikari, K; Adikaram, D; Aghasyan, M; Amarian, M; Baghdasaryan, H; Ball, J; Battaglieri, M; Batourine, V; Bedlinski...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/39189
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