Observation of a narrow structure in H( , ) via interference with -meson production
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 KS in the reaction γ + p → pKSKL. The observed structure may be due to the interference between a strange (or antistrange) baryon resonance in the pKL system and the φ(KSKL) 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.
- Authors:
- Publication Date:
- Research Org.:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1038249
- Report Number(s):
- JLAB-PHY-12-1500; DOE/OR/23177-2042; arXiv:1110.3325
Journal ID: ISSN 0556-2813; PRVCAN; TRN: US1201835
- Grant/Contract Number:
- AC05-06OR23177
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review C, Nuclear Physics
- Additional Journal Information:
- Journal Volume: 85; Journal Issue: 3; Journal ID: ISSN 0556-2813
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; BARYONS; HYPOTHESIS; MISSING MASS; PHOTOPRODUCTION; PRODUCTION
Citation Formats
Amaryan, M. J., Gavalian, G., Nepali, C., Polyakov, M. V., Azimov, Ya., Briscoe, W. J., Dodge, G. E., Hyde, C. E., Klein, F., Kuznetsov, V., Strakovsky, I., and Zhang, J.. Observation of a narrow structure in 1 H( γ , KS0 ) X via interference with φ -meson production. United States: N. p., 2012.
Web. doi:10.1103/PhysRevC.85.035209.
Amaryan, M. J., Gavalian, G., Nepali, C., Polyakov, M. V., Azimov, Ya., Briscoe, W. J., Dodge, G. E., Hyde, C. E., Klein, F., Kuznetsov, V., Strakovsky, I., & Zhang, J.. Observation of a narrow structure in 1 H( γ , KS0 ) X via interference with φ -meson production. United States. https://doi.org/10.1103/PhysRevC.85.035209
Amaryan, M. J., Gavalian, G., Nepali, C., Polyakov, M. V., Azimov, Ya., Briscoe, W. J., Dodge, G. E., Hyde, C. E., Klein, F., Kuznetsov, V., Strakovsky, I., and Zhang, J.. Thu .
"Observation of a narrow structure in 1 H( γ , KS0 ) X via interference with φ -meson production". United States. https://doi.org/10.1103/PhysRevC.85.035209. https://www.osti.gov/servlets/purl/1038249.
@article{osti_1038249,
title = {Observation of a narrow structure in 1 H( γ , KS0 ) X via interference with φ -meson production},
author = {Amaryan, M. J. and Gavalian, G. and Nepali, C. and Polyakov, M. V. and Azimov, Ya. and Briscoe, W. J. and Dodge, G. E. and Hyde, C. E. and Klein, F. and Kuznetsov, V. and Strakovsky, I. and Zhang, J.},
abstractNote = {We report observation of a narrow peak structure at ≈1.54 GeV with a Gaussian width σ = 6 MeV in the missing mass of KS in the reaction γ + p → pKSKL. The observed structure may be due to the interference between a strange (or antistrange) baryon resonance in the pKL system and the φ(KSKL) 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.},
doi = {10.1103/PhysRevC.85.035209},
journal = {Physical Review C, Nuclear Physics},
number = 3,
volume = 85,
place = {United States},
year = {Thu Mar 01 00:00:00 EST 2012},
month = {Thu Mar 01 00:00:00 EST 2012}
}
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