期刊
PHYSICS LETTERS B
卷 759, 期 -, 页码 446-453出版社
ELSEVIER
DOI: 10.1016/j.physletb.2016.06.001
关键词
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资金
- Italian National Institute for Nuclear Physics (INFN)
- German Federal Ministry for Education and Research (BMBF) [05 H09PDF, 05h09GUF]
- Universiti Malaya [UM.C/625/1/HIR/149, RU006-2013RU006-2013, RP012A-13AFR, RP012B-13AFR]
- Ministry of Education, Malaysia [ER004-2012A]
- National Science Centre [DEC-2012/06/M/ST2/00428]
- Science and Technology Facilities Council, UK
- Deutsche Forschungsgemeinschaft (DFG) [SFB 676]
- Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT) and its grants for Scientific Research
- RF Presidential grant [3042.2014.2]
- Israel Science Foundation
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Polish National Science Centre [DEC-2011/01/B/ST2/03643, DEC-2011/03/B/ST2/00220]
- Alexander von Humboldt Foundation
- DESY
- Science and Technology Facilities Council [ST/N000447/1] Funding Source: researchfish
- STFC [ST/N000447/1] Funding Source: UKRI
A search for a narrow baryonic state in the pK(S)(0) and (p) over barK(S)(0) system has been performed in ep collisions at HERA with the ZEUS detector using an integrated luminosity of 358 pb(-1) taken in 2003-2007. The search was performed with deep inelastic scattering events at an ep centre-of-mass energy of 318 GeV for exchanged photon virtuality, Q(2), between 20 and 100 GeV2. Contrary to evidence presented for such a state around 1.52 GeV in a previous ZEUS analysis using a sample of 121 pb(-1) taken in 1996-2000, no resonance peak was found in the p((p) over bar )K-S(0) invariant-mass distribution in the range 1.45-1.7 GeV. Upper limits on the production cross section are set. (C) 2016 The Author(s). Published by Elsevier B.V.
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