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

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

S. Schael,R. Barate,R. Brunelière,I. De Bonis,D. Decamp,C. Goy,S. Jézéquel,J.-P. Lees,F. Martin,E. Merle,M.-N. Minard,B. Pietrzyk,B. Trocmé,S. Bravo,M.P. Casado,Mokhtar Chmeissani,J.M. Crespo,E. Fernandez,M. Fernandez-Bosman,Ll. Garrido,M. Martinez,A. Pacheco,H. Ruiz,A. Colaleo,D. Creanza,N. De Filippis,M. de Palma,G. Iaselli,G. Maggi,M. Maggi,S. Nuzzo,A. Ranieri,Giuseppe Raso,Federico Ruggieri,G. Selvaggi,L. Silvestris,P. Tempesta,Alessia Rita Tricomi,G. Zito,X. Huang,J. Lin,Q. Ouyang,T. Wang,Y. Xie,R. Xu,S. Xue,J. Zhang,L. Zhang,W. Zhao,D. Abbaneo,T. Barklow,O. Buchmüller,Marco Cattaneo,B. Clerbaux,H. Drevermann,R.W. Forty,M. Frank,F. Gianotti,J.B. Hansen,J. Harvey,David Hutchcroft,P. Janot,B. Jost,M. Kado,P. Mato,A. Moutoussi,F. Ranjard,Luigi (Gigi) Rolandi,D. Schlatter,F. Teubert,A. Valassi,I. Videau,F. Badaud,S. Dessagne,A. Falvard,D. Fayolle,P. Gay,J. Jousset,B. Michel,S. Monteil,D. Pallin,J.M. Pascolo,P. Perret,Peter Henrik Hansen,A.C. Kraan,B.S. Nilsson,A. Kyriakis,C. Markou,E. Simopoulou,A. Vayaki,K. Zachariadou,A. Blondel,J.-C. Brient,F. Machefert,A. Rougé,H. Videau,V. Ciulli,E. Focardi,G. Parrini,A. Antonelli,G. Bencivenni,F. Bossi,G. Capon,F. Cerutti,Vitaliano Chiarella,P. Laurelli,G. Mannocchi,G.P. Murtas,L. Passalacqua,J. Kennedy,J.G. Lynch,P. Negus,V. O'Shea,A.S. Thompson,S. Wasserbaech,R. Cavanaugh,S. Dhamotharan,C. Geweniger,P. Hanke,V. Hepp,E.E. Kluge,A. Putzer,H. Stenzel,K. Tittel,M. Wunsch,Raymond Beuselinck,W. Cameron,G. Davies,P.J. Dornan,M. Girone,N. Marinelli,J. Nowell,S.A. Rutherford,J.K. Sedgbeer,J.C. Thompson,R. White,V.M. Ghete,P. Girtler,E. Kneringer,D. Kuhn,G. Rudolph,Evelina Bouhova-Thacker,C.K. Bowdery,D.P. Clarke,G. Ellis,A.J. Finch,F. Foster,G. Hughes,Roger Jones,M.R. Pearson,N.A. Robertson,T. Sloan,M. Smizanska,O. van der Aa,C. Delaere,G. Leibenguth,V. Lemaitre,U. Blumenschein,F. Hölldorfer,K. Jakobs,F. Kayser,A.-S. Müller,B. Renk,H.-G. Sander,Sascha Schmeling,H. Wachsmuth,C. Zeitnitz,T. Ziegler,A. Bonissent,P. Coyle,C. Curtil,A. Ealet,D. Fouchez,P. Payre,A. Tilquin,F. Ragusa,A. David,H. Dietl,G. Ganis,K. Hüttmann,G. Lütjens,W. Männer,H.-G. Moser,R. Settles,M. Villegas,G. Wolf,J. Boucrot,O. Callot,M. Davier,L. Duflot,Jean-François Grivaz,Ph. Heusse,A. Jacholkowska,L. Serin,J.-J. Veillet,P. Azzurri,G. Bagliesi,T. Boccali,L. Foà,A. Giammanco,A. Giassi,F. Ligabue,A. Messineo,F. Palla,G. Sanguinetti,A. Sciabà,G. Sguazzoni,P. Spagnolo,R. Tenchini,A. Venturi,P.G. Verdini,Onuora Awunor,G.A. Blair,G. Cowan,A. Garcia-Bellido,M.G. Green,T. Medcalf,A. Misiejuk,J.A. Strong,P. Teixeira-Dias,R.W. Clifft,T.R. Edgecock,P.R. Norton,I.R. Tomalin,J.J. Ward,B. Bloch-Devaux,D. Boumediene,P. Colas,B. Fabbro,E. Lançon,M.-C. Lemaire,E. Locci,P. Perez,J. Rander,B. Tuchming,B. Vallage,Alan Litke,G. Taylor,Christopher Booth,S. Cartwright,F. Combley,P.N. Hodgson,M. Lehto,Lee Thompson,A. Böhrer,S. Brandt,C. Grupen,J. Hess,A. Ngac,G. Prange,C. Borean,G. Giannini,H. He,J. Putz,J. Rothberg,S.R. Armstrong,K. Berkelman,K. Cranmer,D.P.S. Ferguson,Y. Gao,S. González,O.J. Hayes,H. Hu,S. Jin,J. Kile,P.A. McNamara,J. Nielsen,Y.B. Pan,J.H. von Wimmersperg-Toeller,Werner Wiedenmann,J. Wu,Sau Lan Wu,X. Wu,G. Zobernig,G. Dissertori;S. Schael;R. Barate;R. Brunelière;I. De Bonis;D. Decamp;C. Goy;S. Jézéquel;J.-P. Lees;F. Martin;E. Merle;M.-N. Minard;B. Pietrzyk;B. Trocmé;S. Bravo;M.P. Casado;Mokhtar Chmeissani;J.M. Crespo;E. Fernandez;M. Fernandez-Bosman;Ll. Garrido;M. Martinez;A. Pacheco;H. Ruiz;A. Colaleo;D. Creanza;N. De Filippis;M. de Palma;G. Iaselli;G. Maggi;M. Maggi;S. Nuzzo;A. Ranieri;Giuseppe Raso;Federico Ruggieri;G. Selvaggi;L. Silvestris;P. Tempesta;Alessia Rita Tricomi;G. Zito;X. Huang;J. Lin;Q. Ouyang;T. Wang;Y. Xie;R. Xu;S. Xue;J. Zhang;L. Zhang;W. Zhao;D. Abbaneo;T. Barklow;O. Buchmüller;Marco Cattaneo;B. Clerbaux;H. Drevermann;R.W. Forty;M. Frank;F. Gianotti;J.B. Hansen;J. Harvey;David Hutchcroft;P. Janot;B. Jost;M. Kado;P. Mato;A. Moutoussi;F. Ranjard;Luigi (Gigi) Rolandi;D. Schlatter;F. Teubert;A. Valassi;I. Videau;F. Badaud;S. Dessagne;A. Falvard;D. Fayolle;P. Gay;J. Jousset;B. Michel;S. Monteil;D. Pallin;J.M. Pascolo;P. Perret;Peter Henrik Hansen;A.C. Kraan;B.S. Nilsson;A. Kyriakis;C. Markou;E. Simopoulou;A. Vayaki;K. Zachariadou;A. Blondel;J.-C. Brient;F. Machefert;A. Rougé;H. Videau;V. Ciulli;E. Focardi;G. Parrini;A. Antonelli;G. Bencivenni;F. Bossi;G. Capon;F. Cerutti;Vitaliano Chiarella;P. Laurelli;G. Mannocchi;G.P. Murtas;L. Passalacqua;J. Kennedy;J.G. Lynch;P. Negus;V. O'Shea;A.S. Thompson;S. Wasserbaech;R. Cavanaugh;S. Dhamotharan;C. Geweniger;P. Hanke;V. Hepp;E.E. Kluge;A. Putzer;H. Stenzel;K. Tittel;M. Wunsch;Raymond Beuselinck;W. Cameron;G. Davies;P.J. Dornan;M. Girone;N. Marinelli;J. Nowell;S.A. Rutherford;J.K. Sedgbeer;J.C. Thompson;R. White;V.M. Ghete;P. Girtler;E. Kneringer;D. Kuhn;G. Rudolph;Evelina Bouhova-Thacker;C.K. Bowdery;D.P. Clarke;G. Ellis;A.J. Finch;F. Foster;G. Hughes;Roger Jones;M.R. Pearson;N.A. Robertson;T. Sloan;M. Smizanska;O. van der Aa;C. Delaere;G. Leibenguth;V. Lemaitre;U. Blumenschein;F. Hölldorfer;K. Jakobs;F. Kayser;A.-S. Müller;B. Renk;H.-G. Sander;Sascha Schmeling;H. Wachsmuth;C. Zeitnitz;T. Ziegler;A. Bonissent;P. Coyle;C. Curtil;A. Ealet;D. Fouchez;P. Payre;A. Tilquin;F. Ragusa;A. David;H. Dietl;G. Ganis;K. Hüttmann;G. Lütjens;W. Männer;H.-G. Moser;R. Settles;M. Villegas;G. Wolf;J. Boucrot;O. Callot;M. Davier;L. Duflot;Jean-François Grivaz;Ph. Heusse;A. Jacholkowska;L. Serin;J.-J. Veillet;P. Azzurri;G. Bagliesi;T. Boccali;L. Foà;A. Giammanco;A. Giassi;F. Ligabue;A. Messineo;F. Palla;G. Sanguinetti;A. Sciabà;G. Sguazzoni;P. Spagnolo;R. Tenchini;A. Venturi;P.G. Verdini;Onuora Awunor;G.A. Blair;G. Cowan;A. Garcia-Bellido;M.G. Green;T. Medcalf;A. Misiejuk;J.A. Strong;P. Teixeira-Dias;R.W. Clifft;T.R. Edgecock;P.R. Norton;I.R. Tomalin;J.J. Ward;B. Bloch-Devaux;D. Boumediene;P. Colas;B. Fabbro;E. Lançon;M.-C. Lemaire;E. Locci;P. Perez;J. Rander;B. Tuchming;B. Vallage;Alan Litke;G. Taylor;Christopher Booth;S. Cartwright;F. Combley;P.N. Hodgson;M. Lehto;Lee Thompson;A. Böhrer;S. Brandt;C. Grupen;J. Hess;A. Ngac;G. Prange;C. Borean;G. Giannini;H. He;J. Putz;J. Rothberg;S.R. Armstrong;K. Berkelman;K. Cranmer;D.P.S. Ferguson;Y. Gao;S. González;O.J. Hayes;H. Hu;S. Jin;J. Kile;P.A. McNamara;J. Nielsen;Y.B. Pan;J.H. von Wimmersperg-Toeller;Werner Wiedenmann;J. Wu;Sau Lan Wu;X. Wu;G. Zobernig;G. Dissertori;
physics letters b 2006 Vol. 639 pp. 192-201
178
dissertori2006physicsdeuteron

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 from 0.62 to 1.03 GeV/c. The coalescence parameter B2, which characterizes the likelihood of anti-deuteron production, is measured to be 0.0033±0.0013GeV2 in Z decays. These measurements indicate that the production of anti-deuterons is suppressed in e+e− collisions compared to that in pp and photoproduction collisions.

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