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

6533b852fe1ef96bd12ab500

RESEARCH PRODUCT

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 M. 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 G. Raso F. Ruggieri G. Selvaggi L. Silvestris P. Tempesta A. 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 M. Cattaneo B. Clerbaux H. Drevermann R.w. Forty M. Frank F. Gianotti J.b. Hansen J. Harvey D.e. Hutchcroft P. Janot B. Jost M. Kado P. Mato A. Moutoussi F. Ranjard L. 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 J.d. Hansen J.r. Hansen P.h. 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 M. Antonelli G. Bencivenni F. Bossi G. Capon F. Cerutti V. 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 R. 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 E. Bouhova-thacker C.k. Bowdery D.p. Clarke G. Ellis A.j. Finch F. Foster G. Hughes R.w.l. 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 S. 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 J.-f. 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 O. 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 A.m. Litke G. Taylor C.n. Booth S. Cartwright F. Combley P.n. Hodgson M. Lehto L.f. 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 W. Wiedenmann J. Wu Sau Lan Wu X. Wu G. Zobernig G. Dissertori

subject

Physics Nuclear and High Energy Physics Particle physics 010308 nuclear & particles physics Electron–positron annihilation Hadron 01 natural sciences 7. Clean energy Nuclear physics Deuterium 0103 physical sciences 010306 general physics ALEPH experiment Production rate

description

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.

year	journal	country	edition	language
2006-08-01	Physics Letters B

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