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Search for the exotic Θ(+) resonance in the NOMAD experiment

AuthorsCervera Villanueva, Anselmo ; Gómez Cadenas, Juan José ; Hernando, José Ángel ; Samoylov, O.; NOMAD Collaboration
KeywordsTransition Radiation Detector
Charged Current Interactions
Electromagnetic Calorimeter
Issue Date24-Oct-2006
PublisherSocietà Italiana di Fisica
CitationEuropean Physical Journal C 49(2): 499-510 (2007)
AbstractA search for exotic Θ(+) baryon via Θ(+) -> p + K-S(0) decay mode in the NOMAD v(μ)N data is reported. The special background generation procedure was developed. The proton identification criteria are tuned to maximize the sensitivity to the Θ(+) signal as a function of x(F) which allows to study the Θ(+) production mechanism. We do not observe any evidence for the Θ(+) state in the NOMAD data. We provide an upper limit on Θ(+) production rate at 90% CL as 2.13 x 10(-3) per neutrino interaction.
Description12 pages, 16 figures.-- PACS nrs.: 13.15.+g; 13.60.Le; 13.87.Fh; 14.40.Ev.-- ISI Article Identifier: 000243973100007.-- ArXiv pre-print available at: http://arxiv.org/abs/hep-ex/0612063.-- et al.
Printed version published in Jan 2007.
Publisher version (URL)http://dx.doi.org/10.1140/epjc/s10052-006-0080-y
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