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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 and Bartel, W, et al. (2004) In European Physical Journal C. Particles and Fields 36(4). p.413-423
Abstract
The cross section for anti-deuteron photoproduction is measured at HERA at a mean centre-of-mass energy of W-gammap=200 GeV in the range 0.2 < p(T)/M < 0.7 and y < 0.4, where M, p(T) 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 B-2, 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... (More)
The cross section for anti-deuteron photoproduction is measured at HERA at a mean centre-of-mass energy of W-gammap=200 GeV in the range 0.2 < p(T)/M < 0.7 and y < 0.4, where M, p(T) 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 B-2, 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. (Less)
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European Physical Journal C. Particles and Fields
volume
36
issue
4
pages
413 - 423
publisher
Springer
external identifiers
  • wos:000223351900001
  • scopus:20444424958
ISSN
1434-6044
DOI
10.1140/epjc/s2004-01978-x
language
English
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yes
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985d73eb-055c-41c3-ae0a-7b14c6895c38 (old id 269600)
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2007-08-29 12:58:00
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@article{985d73eb-055c-41c3-ae0a-7b14c6895c38,
  abstract     = {The cross section for anti-deuteron photoproduction is measured at HERA at a mean centre-of-mass energy of W-gammap=200 GeV in the range 0.2 &lt; p(T)/M &lt; 0.7 and y &lt; 0.4, where M, p(T) 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 B-2, 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.},
  author       = {Aktas, A and Andreev, V and Anthonis, T and Asmone, A and Babaev, A and Backovic, S and Bahr, J and Baranov, P and Barrelet, E and Bartel, W and Baumgartner, S and Becker, J and Beckingham, M and Behnke, O and Behrendt, O and Belousov, A and Berger, C and Berger, N and Berndt, T and Bizot, JC and Bohme, J and Boenig, MO and Boudry, V and Bracinik, J and Brisson, V and Broker, HB and Brown, DP and Bruncko, D and Busser, FW and Bunyatyan, A and Buschhorn, G and Bystritskaya, L and Campbell, AJ and Caron, S and Cassol-Brunner, F and Cerny, K and Chekelian, V and Collard, C and Contreras, JG and Coppens, YR and Coughlan, JA and Cox, BE and Cozzika, G and Cvach, J and Dainton, JB and Dau, WD and Daum, K and Delcourt, B and Demirchyan, R and De Roeck, A and Desch, K and De Wolf, EA and Diaconu, C and Dingfelder, J and Dodonov, V and Dubak, A and Duprel, C and Eckerlin, G and Efremenko, V and Egli, S and Eichler, R and Eisele, F and Ellerbrock, M and Elsen, E and Erdmann, M and Erdmann, W and Faulkner, PJW and Favart, L and Fedotov, A and Felst, R and Ferencei, J and Fleischer, M and Fleischmann, P and Fleming, YH and Flucke, G and Flugge, G and Fomenko, A and Foresti, I and Formanek, J and Franke, G and Frising, G and Gabathuler, E and Gabathuler, K and Garutti, E and Garvey, J and Gayler, J and Gerhards, R and Gerlich, C and Ghazaryan, S and Goerlich, L and Gogitidze, N and Gorbounov, S and Grab, C and Grassler, H and Greenshaw, T and Gregori, M and Grindhammer, G and Gwilliam, C and Haidt, D and Hajduk, L and Haller, J and Hansson, Magnus and Heinzelmann, G and Henderson, RCW and Henschel, H and Henshaw, O and Heremans, R and Herrera, G and Herynek, I and Heuer, RD and Hildebrandt, M and Hiller, KH and Hoting, P and Hoffmann, D and Horisberger, R and Hovhannisyan, A and Ibbotson, M and Ismail, M and Jacquet, M and Janauschek, L and Janssen, X and Jemanov, V and Jönsson, Leif and Johnson, DP and Jung, Hannes and Kant, D and Kapichine, M and Karlsson, Martin and Katzy, J and Keller, N and Kennedy, J and Kenyon, IR and Kiesling, C and Klein, M and Kleinwort, C and Klimkovich, T and Kluge, T and Knies, G and Knutsson, Albert and Koblitz, B and Korbel, V and Kostka, P and Koutouev, R and Kropivnitskaya, A and Kroseberg, J and Kuckens, J and Kuhr, T and Landon, MPJ and Lange, W and Lastovicka, T and Laycock, P and Lebedev, A and Leissner, B and Lemrani, R and Lendermann, V and Levonian, S and Lindfeld, L and Lipka, K and List, B and Lobodzinska, E and Loktionova, N and Lopez-Fernandez, R and Lubimov, V and Lueders, H and Luke, D and Lux, T and Lytkin, L and Makankine, A and Malden, N and Malinovski, E and Mangano, S and Marage, P and Marks, J and Marshall, R and Martisikova, M and Martyn, HU and Maxfield, SJ and Meer, D and Mehta, A and Meier, K and Meyer, AB and Meyer, H and Meyer, J and Michine, S and Mikocki, S and Milcewicz, I and Milstead, D and Mohamed, A and Moreau, F and Morozov, A and Morozov, I and Morris, JV and Mozer, MU and Muller, K and Murin, P and Nagovizin, V and Naroska, B and Naumann, J and Naumann, T and Newman, PR and Niebuhr, C and Nikiforov, A and Nikitin, D and Nowak, G and Nozicka, M and Oganezov, R and Olivier, B and Olsson, JE and Ossoskov, G and Ozerov, D and Pascaud, C and Patel, GD and Peez, M and Perez, E and Perieanu, A and Petrukhin, A and Pitzl, D and Placakyte, R and Poschl, R and Portheault, B and Povh, B and Raicevic, N and Ratiani, Z and Reimer, P and Reisert, B and Rimmer, A and Risler, C and Rizvi, E and Robmann, P and Roland, B and Roosen, R and Rostovtsev, A and Rurikova, Z and Rusakov, S and Rybicki, K and Sankey, DPC and Sauvan, E and Schatzel, S and Scheins, J and Schilling, FP and Schleper, P and Schmidt, S and Schmitt, S and Schneider, M and Schoeffel, L and Schoning, A and Schroder, V and Schultz-Coulon, HC and Schwanenberger, C and Sedlak, K and Sefkow, F and Sheviakov, I and Shtarkov, LN and Sirois, Y and Sloan, T and Smirnov, P and Soloviev, Y and South, D and Spaskov, V and Specka, A and Spitzer, H and Stamen, R and Stella, B and Stiewe, J and Strauch, I and Straumann, U and Tchoulakov, V and Thompson, G and Thompson, PD and Tomasz, F and Traynor, D and Truol, P and Tsipolitis, G and Tsurin, I and Turnau, J and Tzamariudaki, E and Uraev, A and Urban, M and Usik, A and Utkin, D and Valkar, S and Valkarova, A and Vallee, C and Van Mechelen, P and Van Remortel, N and Trevino, AV and Vazdik, Y and Veelken, C and Vest, A and Vinokurova, S and Volchinski, V and Wacker, K and Wagner, J and Weber, G and Weber, R and Wegener, D and Werner, C and Werner, N and Wessels, M and Wessling, B and Winter, GG and Wissing, C and Woehrling, EE and Wolf, R and Wunsch, E and Xella, S and Yan, W and Yeganov, V and Zacek, J and Zalesak, J and Zhang, Z and Zhokin, A and Zohrabyan, H and Zomer, F},
  issn         = {1434-6044},
  language     = {eng},
  number       = {4},
  pages        = {413--423},
  publisher    = {Springer},
  series       = {European Physical Journal C. Particles and Fields},
  title        = {Measurement of anti-deuteron photoproduction and a search for heavy stable charged particles at HERA},
  url          = {http://dx.doi.org/10.1140/epjc/s2004-01978-x},
  volume       = {36},
  year         = {2004},
}