Measurement of anti-deuteron photoproduction and a search for heavy stable charged particles at HERA

Aktas, A; Andreev, V; Anthonis, T; Asmone, A; Babaev, A; Backovic, S; Bahr, J; Baranov, P; Barrelet, E; Bartel, W; Baumgartner, S; Becker, J; Beckingham, M; Behnke, O; Behrendt, O; Belousov, A; Berger, Ch; Berger, N; Berndt, T; Bizot, JC; Bohme, J; Boenig, M-O; Boudry, V; Bracinik, J; Brisson, V; Broker, H-B; Brown, DP; Bruncko, D; Busser, FW; Bunyatyan, A; Buschhorn, G; Bystritskaya, L; Campbell, AJ; Caron, S; Cassol-Brunner, F; Cerny, K; Chekelian, V; Collard, C; Contreras, JG; Coppens, YR; Coughlan, JA; Cox, BE; Cozzika, G; Cvach, J; Dainton, JB; Dau, WD; Daum, K; Delcourt, B; Demirchyan, R; de Roeck, A; Desch, K; de Wolf, EA; Diaconu, C; Dingfelder, J; Dodonov, V; Dubak, A; Duprel, C; Eckerlin, G; Efremenko, V; Egli, S; Eichler, R; Eisele, F; Ellerbrock, M; Elsen, E; Erdmann, M; Erdmann, W; Faulkner, PJW; Favart, L; Fedotov, A; Felst, R; Ferencei, J; Fleischer, M; Fleischmann, P; Fleming, YH; Flucke, G; Flugge, G; Fomenko, A; Foresti, I; Formanek, J; Franke, G; Frising, G; Gabathuler, E; Gabathuler, K; Garutti, E; Garvey, J; Gayler, J; Gerhards, R; Gerlich, C; Ghazaryan, S; Goerlich, L; Gogitidze, N; Gorbounov, S; Grab, C; Grassler, H; Greenshaw, T; Gregori, M; Grindhammer, G; Gwilliam, C; Haidt, D; Hajduk, L; Haller, J; Hansson, M; Heinzelmann, G; Henderson, RCW; Henschel, H; Henshaw, O; Heremans, R; Herrera, G; Herynek, I; Heuer, R-D; Hildebrandt, M; Hiller, KH; Hoting, P; Hoffmann, D; Horisberger, R; Hovhannisyan, A; Ibbotson, M; Ismail, M; Jacquet, M; Janauschek, L; Janssen, X; Jemanov, V; Jonsson, L; Johnson, DP; Jung, H; Kant, D; Kapichine, M; Karlsson, M; Katzy, J; Keller, N; Kennedy, J; Kenyon, IR; Kiesling, C; Klein, M; Kleinwort, C; Klimkovich, T; Kluge, T; Knies, G; Knutsson, A; Koblitz, B; Korbel, V; Kostka, P; Koutouev, R; Kropivnitskaya, A; Kroseberg, J; Kuckens, J; Kuhr, T; Landon, MPJ; Lange, W; Lastovicka, T; Laycock, P; Lebedev, A; Leissner, B; Lemrani, R; Lendermann, V; Levonian, S; Lindfeld, L; Lipka, K; List, B; Lobodzinska, E; Loktionova, N; Lopez-Fernandez, R; Lubimov, V; Lueders, H; Luke, D; Lux, T; Lytkin, L; Makankine, A; Malden, N; Malinovski, E; Mangano, S; Marage, P; Marks, J; Marshall, R; Martisikova, M; Martyn, H-U; Maxfield, SJ; Meer, D; Mehta, A; Meier, K; Meyer, AB; Meyer, H; Meyer, J; Michine, S; Mikocki, S; Milcewicz, I; Milstead, D; Mohamed, A; Moreau, F; Morozov, A; Morozov, I; Morris, JV; Mozer, MU; Muller, K; Murin, P; Nagovizin, V; Naroska, B; Naumann, J; Naumann, Th; Newman, PR; Niebuhr, C; Nikiforov, A; Nikitin, D; Nowak, G; Nozicka, M; Oganezov, R; Olivier, B; Olsson, JE; Ossoskov, G; Ozerov, D; Pascaud, C; Patel, GD; Peez, M; Perez, E; Perieanu, A; Petrukhin, A; Pitzl, D; Placakyte, R; Poschl, R; Portheault, B; Povh, B; Raicevic, N; Ratiani, Z; Reimer, P; Reisert, B; Rimmer, A; Risler, C; Rizvi, E; Robmann, P; Roland, B; Roosen, R; Rostovtsev, A; Rurikova, Z; Rusakov, S; Rybicki, K; Sankey, DPC; Sauvan, E; Schatzel, S; Scheins, J; Schilling, F-P; Schleper, P; Schmidt, S; Schmitt, S; Schneider, M; Schoeffel, L; Schoning, A; Schroder, V; Schultz-Coulon, H-C; Schwanenberger, C; Sedlak, K; Sefkow, F; Sheviakov, I; Shtarkov, LN; Sirois, Y; Sloan, T; Smirnov, P; Soloviev, Y; South, D; Spaskov, V; Specka, A; Spitzer, H; Stamen, R; Stella, B; Stiewe, J; Strauch, I; Straumann, U; Tchoulakov, V; Thompson, G; Thompson, PD; Tomasz, F; Traynor, D; Truol, P; Tsipolitis, G; Tsurin, I; Turnau, J; Tzamariudaki, E; Uraev, A; Urban, M; Usik, A; Utkin, D; Valkar, S; Valkarova, A; Vallee, C; van Mechelen, P; van Remortel, N; Vargas Trevino, A; Vazdik, Y; Veelken, C; Vest, A; Vinokurova, S; Volchinski, V; Wacker, K; Wagner, J; Weber, G; Weber, R; Wegener, D; Werner, C; Werner, N; Wessels, M; Wessling, B; Winter, G-G; Wissing, C; Woehrling, E-E; Wolf, R; Wunsch, E; Xella, S; Yan, W; Yeganov, V; Zacek, J; Zalesak, J; Zhang, Z; Zhokin, A; Zohrabyan, H; Zomer, F

dc.contributor.author	Aktas, A	en
dc.contributor.author	Andreev, V	en
dc.contributor.author	Anthonis, T	en
dc.contributor.author	Asmone, A	en
dc.contributor.author	Babaev, A	en
dc.contributor.author	Backovic, S	en
dc.contributor.author	Bahr, J	en
dc.contributor.author	Baranov, P	en
dc.contributor.author	Barrelet, E	en
dc.contributor.author	Bartel, W	en
dc.contributor.author	Baumgartner, S	en
dc.contributor.author	Becker, J	en
dc.contributor.author	Beckingham, M	en
dc.contributor.author	Behnke, O	en
dc.contributor.author	Behrendt, O	en
dc.contributor.author	Belousov, A	en
dc.contributor.author	Berger, Ch	en
dc.contributor.author	Berger, N	en
dc.contributor.author	Berndt, T	en
dc.contributor.author	Bizot, JC	en
dc.contributor.author	Bohme, J	en
dc.contributor.author	Boenig, M-O	en
dc.contributor.author	Boudry, V	en
dc.contributor.author	Bracinik, J	en
dc.contributor.author	Brisson, V	en
dc.contributor.author	Broker, H-B	en
dc.contributor.author	Brown, DP	en
dc.contributor.author	Bruncko, D	en
dc.contributor.author	Busser, FW	en
dc.contributor.author	Bunyatyan, A	en
dc.contributor.author	Buschhorn, G	en
dc.contributor.author	Bystritskaya, L	en
dc.contributor.author	Campbell, AJ	en
dc.contributor.author	Caron, S	en
dc.contributor.author	Cassol-Brunner, F	en
dc.contributor.author	Cerny, K	en
dc.contributor.author	Chekelian, V	en
dc.contributor.author	Collard, C	en
dc.contributor.author	Contreras, JG	en
dc.contributor.author	Coppens, YR	en
dc.contributor.author	Coughlan, JA	en
dc.contributor.author	Cox, BE	en
dc.contributor.author	Cozzika, G	en
dc.contributor.author	Cvach, J	en
dc.contributor.author	Dainton, JB	en
dc.contributor.author	Dau, WD	en
dc.contributor.author	Daum, K	en
dc.contributor.author	Delcourt, B	en
dc.contributor.author	Demirchyan, R	en
dc.contributor.author	de Roeck, A	en
dc.contributor.author	Desch, K	en
dc.contributor.author	de Wolf, EA	en
dc.contributor.author	Diaconu, C	en
dc.contributor.author	Dingfelder, J	en
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dc.contributor.author	Dubak, A	en
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dc.contributor.author	Eichler, R	en
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dc.contributor.author	Ellerbrock, M	en
dc.contributor.author	Elsen, E	en
dc.contributor.author	Erdmann, M	en
dc.contributor.author	Erdmann, W	en
dc.contributor.author	Faulkner, PJW	en
dc.contributor.author	Favart, L	en
dc.contributor.author	Fedotov, A	en
dc.contributor.author	Felst, R	en
dc.contributor.author	Ferencei, J	en
dc.contributor.author	Fleischer, M	en
dc.contributor.author	Fleischmann, P	en
dc.contributor.author	Fleming, YH	en
dc.contributor.author	Flucke, G	en
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dc.contributor.author	Foresti, I	en
dc.contributor.author	Formanek, J	en
dc.contributor.author	Franke, G	en
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dc.contributor.author	Gabathuler, K	en
dc.contributor.author	Garutti, E	en
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dc.contributor.author	Gogitidze, N	en
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dc.contributor.author	Grassler, H	en
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dc.contributor.author	Gregori, M	en
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dc.contributor.author	Gwilliam, C	en
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dc.contributor.author	Loktionova, N	en
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dc.contributor.author	Wessels, M	en
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dc.contributor.author	Wissing, C	en
dc.contributor.author	Woehrling, E-E	en
dc.contributor.author	Wolf, R	en
dc.contributor.author	Wunsch, E	en
dc.contributor.author	Xella, S	en
dc.contributor.author	Yan, W	en
dc.contributor.author	Yeganov, V	en
dc.contributor.author	Zacek, J	en
dc.contributor.author	Zalesak, J	en
dc.contributor.author	Zhang, Z	en
dc.contributor.author	Zhokin, A	en
dc.contributor.author	Zohrabyan, H	en
dc.contributor.author	Zomer, F	en
dc.date.accessioned	2014-03-01T01:20:56Z
dc.date.available	2014-03-01T01:20:56Z
dc.date.issued	2004	en
dc.identifier.issn	1434-6044	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/16037
dc.subject.classification	Physics, Particles & Fields	en
dc.subject.other	OF-MASS ENERGY	en
dc.subject.other	ANTIDEUTERON PRODUCTION	en
dc.subject.other	ION COLLISIONS	en
dc.subject.other	NUCLEAR COLLISIONS	en
dc.subject.other	PROTON-PROTON	en
dc.subject.other	CROSS-SECTION	en
dc.subject.other	COALESCENCE	en
dc.subject.other	70-GEV	en
dc.title	Measurement of anti-deuteron photoproduction and a search for heavy stable charged particles at HERA	en
heal.type	journalArticle	en
heal.identifier.primary	10.1140/epjc/s2004-01978-x	en
heal.identifier.secondary	http://dx.doi.org/10.1140/epjc/s2004-01978-x	en
heal.language	English	en
heal.publicationDate	2004	en
heal.abstract	The cross section for anti-deuteron photoproduction is measured at HERA at a mean centre-of-mass energy of Wγp = 200 GeV in the range 0.2 < pT/M < 0.7 and \|y\| < 0.4, where M, pT and y are the mass, transverse momentum and rapidity of the anti-deuteron in the HERA laboratory frame, respectively. The numbers of anti-deuterons per event are found to be similar in photoproduction to those in central proton-proton collisions at the CERN ISR but much lower than those in central Au-Au collisions at RHIC. The coalescence parameter B2, which characterizes the likelihood of anti-deuteron production, is measured in photoproduction to be 0.010 ± 0.002 ± 0.001, which is much higher than in Au-Au collisions at a similar nucleon-nucleon centre-of-mass energy. No significant production of particles heavier than deuterons is observed and upper limits are set on the photoproduction cross sections for such particles. © Springer-Verlag / Società Italiana di Fisica 2004.	en
heal.publisher	SPRINGER	en
heal.journalName	European Physical Journal C	en
dc.identifier.doi	10.1140/epjc/s2004-01978-x	en
dc.identifier.isi	ISI:000223351900001	en
dc.identifier.volume	36	en
dc.identifier.issue	4	en
dc.identifier.spage	413	en
dc.identifier.epage	423	en