Sökning: WFRF:(Buschmann M.) > (2005-2009) > Search for pentaqua...
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000 | 16506naa a2204537 4500 | |
001 | oai:DiVA.org:uu-143444 | |
003 | SwePub | |
008 | 110120s2007 | |||||||||||000 ||eng| | |
009 | oai:DiVA.org:su-12436 | |
009 | oai:lup.lub.lu.se:8c9a85d4-9156-4263-9b67-293f19b41056 | |
024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-1434442 URI |
024 | 7 | a https://doi.org/10.1016/j.physletb.2007.08.0052 DOI |
024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-124362 URI |
024 | 7 | a https://lup.lub.lu.se/record/6547712 URI |
040 | a (SwePub)uud (SwePub)sud (SwePub)lu | |
041 | a engb eng | |
042 | 9 SwePub | |
072 | 7 | a ref2 swepub-contenttype |
072 | 7 | a art2 swepub-publicationtype |
100 | 1 | a Abdallah, J.4 aut |
245 | 1 0 | a Search for pentaquarks in the hadronic decays of the Z boson with the DELPHI detector at LEP |
264 | 1 | b Elsevier BV,c 2007 |
338 | a print2 rdacarrier | |
520 | a The quark model does not exclude states composed of more than three quarks, like pentaquark systems. Controversial evidence for such states has been published in the last years, in particular: for a strange pentaquark Theta(1540)(+); for a double-strange state, the Xi(1862)(--), subsequently called Phi(1860)--; and for a charmed state, the Theta(c)(3100)(0). If confirmed, a full pentaquark family might exist; such pentaquark states could be produced in e(+)e(-) annihilations near the Z energy. In this Letter a search for pentaquarks is described using the DELPHI detector at LEP, characterized by powerful particle identification sub-systems crucial in the separation of the signal from the background for these states. At 95% CL, upper limits are set on the production rates N of such particles and their charge-conjugate state per Z decay: N-Theta+ x Br(Theta(+) -> pK(S)(0)) < 5.1 x 10(-4), N Theta++ < 1.6 x 10(-3), N Phi(1860)-- x Br((P(1860)-- -> Xi(-)pi(-)) < 2.9 x 10(-4), N-Theta c(3100)0 x Br(Theta(c)(3100)(0) -> D*(+)p) < 8.8 x 10(-4). | |
650 | 7 | a NATURVETENSKAPx Fysik0 (SwePub)1032 hsv//swe |
650 | 7 | a NATURAL SCIENCESx Physical Sciences0 (SwePub)1032 hsv//eng |
650 | 7 | a NATURVETENSKAPx Fysikx Subatomär fysik0 (SwePub)103012 hsv//swe |
650 | 7 | a NATURAL SCIENCESx Physical Sciencesx Subatomic Physics0 (SwePub)103012 hsv//eng |
653 | a Physics | |
653 | a Fysik | |
653 | a PRODUCTION-RATES; BARYON PRODUCTION; RESONANCE; THETA(+); PHYSICS; VECTOR; MASSES; STATES; MESON; LIGHT | |
653 | a NATURAL SCIENCES | |
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773 | 0 | t Physics Letters Bd : Elsevier BVg 653:2-4, s. 151-160q 653:2-4<151-160x 0370-2693x 1873-2445 |
856 | 4 | u http://cds.cern.ch/record/1049975/files/arXiv:0708.0415.pdf |
856 | 4 | u http://dx.doi.org/10.1016/j.physletb.2007.08.005y FULLTEXT |
856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-143444 |
856 | 4 8 | u https://doi.org/10.1016/j.physletb.2007.08.005 |
856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-12436 |
856 | 4 8 | u https://lup.lub.lu.se/record/654771 |
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