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Study of $D^{*+}$ production in $\nu_{\mu}$ charged current interactions in the NOMAD experiment

P. Astier D. Autiero 1 A. Baldisseri M. Baldo-Ceolin M. Banner G. Bassompierre 2 K. Benslama N. Besson I. Bird B. Blumenfeld F. Bobisut J. Bouchez S. Boyd A. Bueno S. Bunyatov L. Camilleri A. Cardini P W. Cattaneo V. Cavasinni A. Cervera-Villanueva R. Challis G. Collazuol G. Conforto C. Conta M. Contalbrigo R. Cousins D. Daniels H. Degaudenzi T. del Prete A. de Santo T. Dignan L. Di Lella E Silva E. Do Couto J. Dumarchez M. Ellis T. Fazio 2 G J. Feldman R. Ferrari D. Ferrere V. Flaminio M. Fraternali J.M. Gaillard 2 E. Gangler A. Geiser D. Geppert D. Gibin S. Gninenko A. Godley J J. Gomez-Cadenas J. Gosset C. Gossling M. Gouanere 2 A. Grant G. Graziani A. Guglielmi C. Hagner J. Hernando D. Hubbard P. Hurst N. Hyett E. Iacopini C. Joseph F. Juget N. Kent M. Kirsanov O. Klimov J. Kokkonen A. Kovzelev A. Krasnoperov 2 D. Kustov V. Kuznetsov S. Lacaprara C. Lachaud B. Lakic A. Lanza L. La Rotonda M. Laveder A. Letessier-Selvon J M. Levy L. Linssen A. Ljubicic J. Long A. Lupi A. Marchionni F. Martelli X. Mechain J.P. Mendiburu 2 J P. Meyer M. Mezzetto S R. Mishra G F. Moorhead D. Naumov P. Nedelec 2 Yu. Nefedov C. Nguyen-Mau D. Orestano F. Pastore L S. Peak E. Pennacchio H. Pessard 2 R. Petti A. Placci G. Polesello D. Pollmann A. Polyarush B. Popov C. Poulsen J. Rico P. Riemann C. Roda A. Rubbia F. Salvatore K. Schahmaneche B. Schmidt T. Schmidt M. Sevior D. Sillou 2 F J P. Soler Gabriella Sozzi D. Steele U. Stiegler T. Stolarczyk M. Tareb-Reyes G N. Taylor V. Tereshchenko A. Toropin a M. Touchard S N. Tovey M T. Tran E. Tsesmelis J. Ulrichs L. Vacavant M. Valdata-Nappi V. Valuev 2 F. Vannucci K E. Varvell M. Veltri V. Vercesi G. Vidal-Sitjes J M. Vieira T. Vinogradova T. Weisse F F. Wilson L J. Winton B D. Yabsley H. Zaccone K. Zuber P. Zuccon
Abstract : A search was made among $\nu_\mu$ charged current events collected in the NOMAD experiment for the reaction: $\nu_\mu + N \rightarrow \mu^- + D^{\star+} + hadrons \hookrightarrow D^0 + \pi^+ \hookrightarrow K^- + \pi^+ A $D^{\star+}$ sample composed of 47 events, with 90% purity, was extracted. The $D^{\star+}$ yield in $\nu_\mu$ charged current interactions was measured to be $T = (0.99 \pm 0.15(stat.) \pm 0.11(syst.))$%. The mean fraction of the hadronic jet energy taken by the $D^{\star+}$ is $0.67 \pm 0.02(stat) \pm 0.02(syst.)$. The distributions of the fragmentation variables $z$, ${P_{T}}^2$ and $x_F$ for $D^{\star+}$ are also presented.
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Submitted on : Tuesday, March 12, 2002 - 5:14:12 PM
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P. Astier, D. Autiero, A. Baldisseri, M. Baldo-Ceolin, M. Banner, et al.. Study of $D^{*+}$ production in $\nu_{\mu}$ charged current interactions in the NOMAD experiment. Physics Letters B, Elsevier, 2002, 526, pp.278-286. ⟨in2p3-00021465⟩

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