Observation of a Narrow Structure in ¹H(yKSO)X Via Interference with φ-Meson Production

Authors

M. J. Amaryan, Old Dominion UniversityFollow
G. Gavalian, Old Dominion University
C. Nepali, Old Dominion University
M. V. Polyakov
W. J. Briscoe
G. E. Dodge, Old Dominion UniversityFollow
C. E. Hyde, Old Dominion UniversityFollow
F. Klein
V. Kuznetsov
I. Strakovsky
J. Zhang

Document Type

Article

Publication Date

2012

DOI

10.1103/PhysRevC.85.035209

Publication Title

Physical Review C

Volume

85

Issue

3

Pages

035209 (9pg.)

Abstract

We report observation of a narrow peak structure at ~1.54 GeV with a Gaussian width σ = 6 MeV in the missing mass of K_S in the reaction γ+p → pK_SK_L. The observed structure may be due to the interference between a strange (or antistrange) baryon resonance in the pK_L system and the φ(K_SK_L) photoproduction leading to the same final state. The statistical significance of the observed excess of events estimated as the log-likelihood ratio of the resonant signal + background hypothesis and the φ-production-based background-only hypothesis corresponds to 5.3σ. ©2012 American Physical Society

Original Publication Citation

Amaryan, M. J., Gavalian, G., Nepali, C., Polyakov, M. V., Azimov, Y., Briscoe, W. J., . . . Zhang, J. (2012). Observation of a narrow structure in ¹H (γ, K S 0) X via interference with φ-meson production. Physical Review C, 85(3), 035209.

ORCID

0000-0003-1582-2376 (Dodge), 0000-0001-7282-8120 (Hyde)

Repository Citation

Amaryan, M. J.; Gavalian, G.; Nepali, C.; Polyakov, M. V.; Briscoe, W. J.; Dodge, G. E.; Hyde, C. E.; Klein, F.; Kuznetsov, V.; Strakovsky, I.; and Zhang, J., "Observation of a Narrow Structure in ¹H(yKSO)X Via Interference with φ-Meson Production" (2012). Physics Faculty Publications. 85.
https://digitalcommons.odu.edu/physics_fac_pubs/85