Deuteron and anti-deuteron production in e+e− collisions at the Z resonance

S Schael,G Bencivenni,M De Palma,H Stenzel,K Tittel,B.S Nilsson,G Cowan,M Wunsch,G Davies,A Tricomi,R White,C Geweniger,F Ruggieri,G Raso,W Zhao,S Jézéquel,H Dietl,N De Filippis,H Drevermann,E Kneringer,I De Bonis,L Passalacqua,E Merle,B Vallage,G Capon,A Antonelli,L.F Thompson,B Trocmé,T Medcalf,M Cattaneo,W Männer,A Ngac,S Dhamotharan,A Pacheco,A Kyriakis,K Hüttmann,A Misiejuk,A Ealet,K Jakobs,G Zito,C Borean,B Tuchming,G.A Blair,H Ruiz,A Vayaki,M Antonelli,F Ligabue,R Barate,B Bloch-Devaux,M Davier,A Böhrer,M Frank,P Laurelli,M Maggi,B Renk,T Boccali,J Nielsen,E Simopoulou,O Van Der Aa,H Wachsmuth,G Selvaggi,S Dessagne,C Markou,S Bravo,A Giassi,Y Xie,A Colaleo,J Rothberg,O Buchmüller,A Rougé,S González,M Girone,P Girtler,X Wu,F Machefert,P Coyle,C Delaere,B Pietrzyk,F Foster,A Falvard,K Berkelman,G Prange,D.P.S Ferguson,R Brunelière,B Fabbro,W Cameron,S Nuzzo,J Zhang,A Tilquin,K Zachariadou,J.M Crespo,N Marinelli,M Villegas,K Cranmer,R Beuselinck,W Wiedenmann,L Serin,P Negus,C Grupen,F Gianotti,A Venturi,E Lançon,J.G Lynch,G Rudolph,L Silvestris,P Tempesta,P Spagnolo,L Zhang,G Parrini,G Wolf,F Cerutti,F Combley,D Abbaneo,H Videau,G Giannini,D Pallin,V Ciulli,M.G Green,L Duflot,S Wasserbaech,F Hölldorfer,G Bagliesi,A Ranieri,J Kennedy,A Bonissent,A David,S.A Rutherford,J.M Pascolo,F Bossi,V Hepp,D Creanza,G Mannocchi,Q Ouyang,J Kile,J.C Thompson,Ll Garrido,R Xu,A Putzer,J Boucrot,V Chiarella,O Callot,T Barklow,M.-N Minard,O.J Hayes,B Michel,L Foà,G Sanguinetti,F Kayser,G Lütjens,P Perret,A Valassi,F Palla,P Payre,P Colas,A Messineo,U Blumenschein,E Focardi,T Ziegler,G Zobernig,F Badaud,J Harvey,D Schlatter,G Iaselli,S Monteil,S Jin,G Ganis,D Boumediene,A Giammanco,A Blondel,D Fouchez,I Videau,J Lin,D Fayolle,F Ragusa,F Teubert,E Locci,R Cavanaugh,C Zeitnitz,P Janot,C Curtil,O Awunor,G Sguazzoni,H He,G Hughes,S.R Armstrong,P.A Mcnamara,P Teixeira-Dias,A Sciabà,P Hanke,S Schmeling,C Goy,P Azzurri,A Moutoussi,J.-F Grivaz,G Ellis,M Lehto,H Hu,J Jousset,F Ranjard,T Wang,B Jost,G Dissertori,B Clerbaux,J Nowell,M Kado,M Chmeissani,R Settles,J Rander,S Xue,G Mäggi ,Р Тенчини ,V M Ghete ,J J Ward ,E V Bouhova-Thacker ,A García-Bellido ,J Heß ,P Hodgson ,G Rolandi ,M Fernández-Bosman ,J P Lees ,Danielle Clarke ,M C Lemaire ,R W L Jones ,G N Taylor ,J A Strong ,R Forty ,P Mató ,A J Finch ,A M Litke ,Y S Gao ,J J Veillet ,P J Dornan ,M P Casado ,J H Von Wimmersperg-Toeller ,P G Verdini ,D Hutchcroft ,Y Pan ,V O’shea ,H G Moser ,J K Sedgbeer ,C N Booth ,A Jachołkowska ,P H Hansen ,J D Hansen ,A S Thompson ,F Murtas ,N A Robertson ,Jian Wu ,F F Martin ,E Fernández ,A.‐S Müller ,E E Kluge ,P Heusse ,X T Huang ,Siegmund Brandt ,C K Bowdery ,D Décamp ,S L Cartwright ,P R Norton ,P Pérez ,R.w Clit ,J Pütz ,J B Hansen ,M Martı́nez ,R Edgecock ,M Smižanská ,S L Wu ,J C Brient ,A Kraan ,D Kühn ,V Lemaı̂tre ,M R Pearson ,I R Tomalin ,H G Sander

doi:10.1016/j.physletb.2006.06.043

Deuteron and anti-deuteron production in e+e− collisions at the Z resonance

S Schael, G Bencivenni + Show 272 more

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https://doi.org/10.1016/j.physletb.2006.06.043

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#Production Of Anti-deuterons #Anti-deuteron Production + Show 6 more

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Abstract

Deuteron and anti-deuteron production in Z decays has been observed in the ALEPH experiment at LEP. The production rate of anti-deuterons is measured to be 5.9+-1.8+-0.5 10^-6 per hadronic Z decay in the anti-deuteron momentum range 0.62 to 1.03 GeV/c. The coalescence parameter B_2, which characterizes the likelihood of anti-deuteron production, is measured to be 0.0033+-0.0013 GeV^2 in Z dedays. These measurements indicate that the production of anti-deuterons is suppressed in e+e- collisions compared to pp and photoproduction collisions.

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