Search for {eta}(1475){yields}K{sub S}{sup 0}K{sup {+-}}{pi}{sup {+-}} in two-photon fusion at the CLEO detector at Cornell

Journal Article · Fri Apr 01 00:00:00 EST 2005 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.71.072001· OSTI ID:20708950

Ahohe, R; Asner, D M; Dytman, S A ^[1]

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1. University of Pittsburgh, Pittsburgh, Pennsylvania 15260 (United States)

We analyze 13.8 fb{sup -1} of the integrated e{sup +}e{sup -} luminosity collected at 10.6 GeV center-of-mass energy with the CLEO II and CLEO II.V detectors to study exclusive two-photon production of hadrons with masses below 1.7 GeV/c{sup 2} decaying into the K{sub S}{sup 0}K{sup {+-}}{pi}{sup {+-}} final state. We observe two statistically significant enhancements in the {eta}(1475) mass region. These enhancements have large transverse momentum which rules them out as being due to pseudoscalar resonances but is consistent with the production of axial-vector mesons. We use tagged two-photon events to study the properties of the observed enhancements and associate them with the production of f{sub 1}(1285) and f{sub 1}(1420). Our nonobservation of {eta}(1475) is inconsistent by more than 2 standard deviations with the first observation of this resonance in two-photon collisions by the L3 experiment. We present our estimates for 90% confidence level upper limits on the products of two-photon partial widths of light pseudoscalar hadrons and their branching fractions into K{sub S}{sup 0}({pi}{sup +}{pi}{sup -})K{sup {+-}}{pi}{sup {+-}}.

• OSTI ID: 20708950
• Journal Information: Physical Review. D, Particles Fields, Vol. 71, Issue 7; Other Information: DOI: 10.1103/PhysRevD.71.072001; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BRANCHING RATIO
CESR STORAGE RING
ETA-1440 MESONS
F1-1285 MESONS
GEV RANGE
KAONS MINUS
KAONS NEUTRAL SHORT-LIVED
KAONS PLUS
MULTIPARTICLE SPECTROMETERS
PARTICLE IDENTIFICATION
PARTICLE PRODUCTION
PARTICLE WIDTHS
PHOTONS
PIONS MINUS
PIONS PLUS
RESONANCE PARTICLES
REST MASS
TRANSVERSE MOMENTUM