Search for pentaquarks in the hadronic decays of the Z boson with the DELPHI detector at LEP

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Abdallah, J. (author)

Search for pentaquarks in the hadronic decays of the Z boson with the DELPHI detector at LEP

Article/chapterEnglish2007

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Elsevier BV,2007
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LIBRIS-ID:oai:DiVA.org:uu-143444
https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-143444URI
https://doi.org/10.1016/j.physletb.2007.08.005DOI
https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-12436URI
https://lup.lub.lu.se/record/654771URI

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Language:English
Summary in:English

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SwePubSwePub

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Subject category:ref swepub-contenttype
Subject category:art swepub-publicationtype

Notes

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).

Subject headings and genre

NATURVETENSKAP Fysik hsv//swe
NATURAL SCIENCES Physical Sciences hsv//eng
NATURVETENSKAP Fysik Subatomär fysik hsv//swe
NATURAL SCIENCES Physical Sciences Subatomic Physics hsv//eng
Physics
Fysik
PRODUCTION-RATES; BARYON PRODUCTION; RESONANCE; THETA(+); PHYSICS; VECTOR; MASSES; STATES; MESON; LIGHT
NATURAL SCIENCES

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Abreu, P. (author)
Adam, W. (author)
Adzic, P. (author)
Albrecht, T. (author)
Alemany-Fernandez, R. (author)
Allmendinger, T. (author)
Allport, P. P. (author)
Amaldi, U. (author)
Amapane, N. (author)
Amato, S. (author)
Anashkin, E. (author)
Andreazza, A.Uppsala universitet,Institutionen för kärn- och partikelfysik (author)
Andringa, S. (author)
Anjos, N. (author)
Antilogus, P. (author)
Apel, W-D (author)
Arnoud, Y. (author)
Ask, StefanLund University,Lunds universitet,Partikel- och kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Particle and nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)quar-sas (author)
Åsman, BarbroStockholms universitet,Fysikum(Swepub:su)bar (author)
Johansson, ErikStockholms universitet,Fysikum(Swepub:su)kej (author)
Augustinus, A. (author)
Baillon, P. (author)
Ballestrero, A. (author)
Bambade, P. (author)
Barbier, R. (author)
Bardin, D. (author)
Jarlskog, GöranLund University,Lunds universitet,Partikel- och kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Particle and nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)quar-gja (author)
Baroncelli, A. (author)
Battaglia, M. (author)
Baubillier, M. (author)
Becks, K-H (author)
Begalli, M. (author)
Behrmann, A. (author)
Ben-Haim, E. (author)
Benekos, N. (author)
Benvenuti, A. (author)
Berat, C. (author)
Berggren, M. (author)
Bertrand, D. (author)
Besancon, M. (author)
Besson, N. (author)
Blochi, D. (author)
Blom, M. (author)
Bluj, M. (author)
Bonesini, M. (author)
Boonekamp, M. (author)
Booth, P. S. L.Stockholms universitet,Fysikum (author)
Borisov, G. (author)
Botner, O. (author)
Bouquet, B. (author)
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Boyko, I. (author)
Bracko, M. (author)
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Brodet, E. (author)
Bruckman, P. (author)
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Buschbeck, B. (author)
Buschmann, P. (author)
Calvi, M. (author)
Camporesi, F. (author)
Canale, V. (author)
Carena, F. (author)
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Chapkin, M. (author)
Charpentier, Ph. (author)
Checchia, P. (author)
Chierici, R. (author)
Chliapnikov, P. (author)
Chudoba, J. (author)
Chung, S. U. (author)
Cieslik, K. (author)
Collins, P. (author)
Contri, R. (author)
Cosme, G. (author)
Cossutti, F. (author)
Costa, M. J. (author)
Crennell, D. (author)
Cuevas, J. (author)
D'Hondt, J. (author)
da Silva, T. (author)
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De Boer, W. (author)
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De Min, A. (author)
de Paula, L. (author)
Di Ciaccio, L. (author)
Di Simone, A. (author)
Doroba, K. (author)
Drees, J. (author)
Eigen, G. (author)
Ekelöf, TordUppsala universitet,Institutionen för kärn- och partikelfysik (author)
Ellert, MattiasUppsala universitet,Institutionen för kärn- och partikelfysik(Swepub:uu)mel03009 (author)
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Hedberg, VincentLund University,Lunds universitet,Partikel- och kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Particle and nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)quar-vhe (author)
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Uppsala universitetInstitutionen för kärn- och partikelfysik (creator_code:org_t)

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In:Physics Letters B: Elsevier BV653:2-4, s. 151-1600370-26931873-2445

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By the author/editor: Abdallah, J.; Abreu, P.; Adam, W.; Adzic, P.; Albrecht, T.; Alemany-Fernande ...; show more...; Allmendinger, T.; Allport, P. P.; Amaldi, U.; Amapane, N.; Amato, S.; Anashkin, E.; Andreazza, A.; Andringa, S.; Anjos, N.; Antilogus, P.; Apel, W-D; Arnoud, Y.; Ask, Stefan; Åsman, Barbro; Johansson, Erik; Augustinus, A.; Baillon, P.; Ballestrero, A.; Bambade, P.; Barbier, R.; Bardin, D.; Jarlskog, Göran; Baroncelli, A.; Battaglia, M.; Baubillier, M.; Becks, K-H; Begalli, M.; Behrmann, A.; Ben-Haim, E.; Benekos, N.; Benvenuti, A.; Berat, C.; Berggren, M.; Bertrand, D.; Besancon, M.; Besson, N.; Blochi, D.; Blom, M.; Bluj, M.; Bonesini, M.; Boonekamp, M.; Booth, P. S. L.; Borisov, G.; Botner, O.; Bouquet, B.; Bowcock, J. V.; Boyko, I.; Bracko, M.; Brenner, Richard ...; Brodet, E.; Bruckman, P.; Brunet, J. M.; Buschbeck, B.; Buschmann, P.; Calvi, M.; Camporesi, F.; Canale, V.; Carena, F.; Castro, N.; Cavallo, F.; Chapkin, M.; Charpentier, Ph.; Checchia, P.; Chierici, R.; Chliapnikov, P.; Chudoba, J.; Chung, S. U.; Cieslik, K.; Collins, P.; Contri, R.; Cosme, G.; Cossutti, F.; Costa, M. J.; Crennell, D.; Cuevas, J.; D'Hondt, J.; da Silva, T.; Da Silva, W.; Della Ricca, G.; De Angelis, A.; De Boer, W.; De Clercq, C.; De Lotto, B.; De Maria, N.; De Min, A.; de Paula, L.; Di Ciaccio, L.; Di Simone, A.; Doroba, K.; Drees, J.; Eigen, G.; Ekelöf, Tord; Ellert, Mattias; Elsing, M.; Santo, M. C. Esp ...; Fanourakis, G.; Fassouliotis, D.; Feindt, M.; Fernandez, J.; Ferrer, A.; Ferro, F.; Flagmeyer, U.; Foeth, H.; Fokitis, E.; Fulda-Quenzer, F ...; Fuster, J.; Gandelman, M.; Garcia, C.; Gavillet, Ph.; Gazis, E.; Gokieli, R.; Golob, B.; Gomez-Ceballos, ...; Goncalves, P.; Graziani, E.; Grosdidier, G.; Grzelak, K.; Guy, J.; Haag, C.; Hallgren, Allan; Hamacher, K.; Hamilton, K.; Haug, S.; Hauler, F.; Hedberg, Vincent; Hennecke, M.; Herr, H.; Hoffman, J.; Holmgren, Sven-O ...; Holt, P. J.; Houlden, M. A.; Jackson, J. N.; Jarlskog, G.; Jarry, P.; Jeans, D.; Johansson, E. K.; Jonsson, P.; Joram, C.; Jungermann, L.; Kapusta, F.; Katsanevas, S.; Katsoufis, E.; Kernel, G.; Kersevan, B. P.; Kerzel, U.; King, B. T.; Kjaer, N. J.; Kluit, P.; Kokkinias, P.; Kourkoumelis, C.; Kouznetsov, O.; Krumstein, Z.; Kucharczyk, M.; Lamsa, J.; Leder, G.; Ledroit, F.; Leinonen, L.; Leitner, R.; Lemonne, J.; Lepeltier, V.; Lesiak, T.; Liebig, W.; Liko, D.; Lipniacka, A.; Lopes, J. H.; Lopez, J. M.; Loukas, D.; Lutz, P.; Lyons, L.; MacNaughton, J.; Malek, A.; Maltezos, S.; Mandl, F.; Marco, J.; Marco, R.; Marechal, B.; Margoni, M.; Marin, J-C; Mariotti, C.; Markou, A.; Martinez-Rivero, ...; Masik, P. J.; Mastroyiannopoul ...; Matorras, F.; Matteuzzi, C.; Mazzucato, F.; Mazzucato, M.; Mc Nulty, R.; Meroni, C.; Migliore, E.; Mitaroff, W.; Mjörnmark, Ulf; Moa, Torbjörn; Moch, M.; Moenig, K.; Monge, R.; Montenegro, J.; Moraes, D.; Moreno, S.; Morettini, P.; Mueller, U.; Muenich, K.; Mulders, M.; Mundim, L.; Murray, W.; Muryn, B.; Myatt, G.; Myklebust, T.; Nassiakou, M.; Navarria, F.; Nawrocki, K.; Nicolaidou, R.; Nikolenko, M.; Oblakowska-Mucha ...; Obraztsov, V.; Olshevski, A.; Onofre, A.; Orava, R.; Osterberg, K.; Ouraou, A.; Oyanguren, A.; Paganoni, M.; Paiano, S.; Palacios, J. P.; Palka, H.; Papadopoulou, Th ...; Pape, L.; Parkes, C.; Parodi, F.; Parzefall, U.; Passeri, A.; Passon, O.; Peralta, L.; Perepelitsa, V.; Perrotta, A.; Petrolini, A.; Piedra, J.; Pieri, L.; Pierre, F.; Pimenta, M.; Piotto, E.; Podobnik, T.; Poireau, V.; Pol, M. E.; Polok, G.; Pozdniakov, V.; Pukhaeva, N.; Pullia, A.; Raducci, S.; Rames, J.; Read, A.; Rebecchi, P.; Rehn, J.; Reid, D.; Reinhardt, R.; Renton, P.; Richard, F.; Ridky, J.; Rivero, M.; Rodriguez, D.; Romero, A.; Ronchese, P.; Roudeau, P.; Rovelli, T.; Ruhlmann-Kleider ...; Ryabtchikov, D.; Sadovsky, A.; Salmi, L.; Salt, J.; Sander, C.; Savoy-Navarro, A ...; Schwickerath, U.; Sekulin, R.; Siebel, M.; Sisakian, A.; Smadja, G.; Smirnova, Oxana; Sokolov, A.; Sopczak, A.; Sosnowski, R.; Spassov, T.; Stanitzki, M.; Stocchi, A.; Strauss, J.; Stugu, B.; Szczekowski, M.; Szeptycka, M.; Szumlak, T.; Tabarelli, T.; Tegenfeldt, Fred ...; Timmermans, J.; Tkatchev, L.; Tobin, M.; Todorovova, S.; Tome, B.; Tonazzo, A.; Tortosa, P.; Travnicek, P.; Treille, D.; Tristram, G.; Trochimczuk, M.; Troncon, C.; Turluer, M-L; Tyapkin, I. A.; Tyapkin, P.; Tzamarias, S.; Uvarov, V.; Valenti, G.; Van Dam, P.; Van Eldik, J.; van Remortel, N.; Van Vulpen, I.; Vegni, G.; Veloso, F.; Venus, W.; Verdier, P.; Verzi, V.; Vilanova, D.; Vitale, L.; Vrba, V.; Wahlen, H.; Washbrook, A. J.; Weiser, C.; Wicke, D.; Wickens, J.; Wilkinson, G.; Winter, M.; Witek, M.; Yushchenko, O.; Zalewska, A.; Zalewski, P.; Zavrtanik, D.; Zhuravlov, V.; Zimin, N. I.; Zintchenko, A.; Zupan, M.; show less...

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