/ Experiment-HEP hep-ex/0404011


Bose-Einstein correlations in charged current muon-neutrino interactions in the NOMAD experiment at CERN


Astier, P. ; Autiero, D. ; Baldisseri, A. ; Baldo-Ceolin, M. ; Banner, M. ; Bassompierre, G. ; Benslama, K. ; Besson, N. ; Bird, I. ; Blumenfeld, Barry J. ; Bobisut, F. ; Bouchez, J. ; Boyd, S. ; Bueno, A. ; Bunyatov, S. ; Camilleri, L. ; Cardini, A. ; Cattaneo, P.W. ; Cavasinni, V. ; Cervera-Villanueva, A. ; Challis, R.C. ; Chukanov, A. ; Collazuol, G. ; Conforto, G. ; Conta, C. ; Contalbrigo, M. ; Cousins, R. ; Daniels, D. ; Degaudenzi, H. ; Del Prete, T. ; De Santo, A. ; Dignan, T. ; Di Lella, L. ; do Couto e Silva, E. ; Dumarchez, J. ; Ellis, Malcolm ; Feldman, G.J. ; Ferrari, R. ; Ferrere, D. ; Flaminio, V. ; Fraternali, M. ; Gaillard, J.M. ; Gangler, E. ; Geiser, A. ; Geppert, D. ; Gibin, D. ; Gninenko, S. ; Godley, A. ; Gomez-Cadenas, J.J. ; Gosset, J. ; Gossling, C. ; Gouanere, M. ; Grant, A. ; Graziani, G. ; Guglielmi, A. ; Hagner, C. ; Hernando, J. ; Hubbard, D. ; Hurst, P. ; Hyett, N. ; Iacopini, E. ; Joseph, C. ; Juget, F. ; Kent, N. ; Kirsanov, M. ; Klimov, O. ; Kokkonen, J. ; Kovzelev, A. ; Krasnoperov, A. ; Lacaprara, S. ; Lachaud, C. ; Lakic, B. ; Lanza, A. ; La Rotonda, L. ; Laveder, M. ; Letessier-Selvon, A. ; Levy, J.M. ; Linssen, L. ; Ljubicic, A. ; Long, J. ; Lupi, A. ; Lyubushkin, V. ; Marchionni, A. ; Martelli, F. ; Mechain, X. ; Mendiburu, J.P. ; Meyer, J.P. ; Mezzetto, M. ; Mishra, S.R. ; Moorhead, G.F. ; Naumov, D. ; Nedelec, P. ; Nefedov, Yu. ; Nguyen-Mau, C. ; Orestano, D. ; Pastore, F. ; Peak, L.S. ; Pennacchio, E. ; Pessard, H. ; Petti, R. ; Placci, A. ; Polesello, G. ; Pollmann, D. ; Polyarush, A. ; Popov, B. ; Poulsen, C. ; Rebuffi, L. ; Rico, J. ; Riemann, P. ; Roda, C. ; Rubbia, A. ; Salvatore, F. ; Schahmaneche, K. ; Schmidt, B. ; Schmidt, T. ; Sconza, A. ; Sevior, M. ; Sillou, D. ; Soler, F.J.P. ; Sozzi, G. ; Steele, D. ; Stiegler, U. ; Stipcevic, M. ; Stolarczyk, Th. ; Tareb-Reyes, M. ; Taylor, G.N. ; Tereshchenko, V. ; Toropin, A. ; Touchard, A.M. ; Tovey, S.N. ; Tran, M.T. ; Tsesmelis, E. ; Ulrichs, J. ; Vacavant, L. ; Valdata-Nappi, M. ; Valuev, V. ; Vannucci, F. ; Varvell, K.E. ; Veltri, M. ; Vercesi, V. ; Vidal-Sitjes, G. ; Vieira, J.M. ; Vinogradova, T. ; Weber, F.V. ; Weisse, T. ; Wilson, F.F. ; Winton, L.J. ; Yabsley, Bruce D. ; Zaccone, H. ; Zei, R. ; Zuber, K. ; Zuccon, P.

Published in: Nucl.Phys.
Year: 2004
Vol.: B686
Page No: 3-28
Pages: 24

Abstract: Bose-Einstein Correlations in one and two dimensions have been studied, with high statistics, in charged current muon-neutrino interaction events collected with the NOMAD detector at CERN. In one dimension the Bose-Einstein effect has been analyzed with the Goldhaber and the Kopylov-Podgoretskii phenomenological parametrizations. The Goldhaber parametrization gives the radius of the pion emission region R_G = 1.01+/-0.05(stat)+0.09-0.06(sys) fm and for the chaoticity parameter the value lambda = 0.40+/-0.03(stat)+0.01-0.06(sys). Using the Kopylov-Podgoretskii parametrization yields R_KP = 2.07+/-0.04(stat)+0.01-0.14(sys) fm and lambda_KP = 0.29+/-0.06(stat)+0.01-0.04(sys). Different parametrizations of the long-range correlations have been also studied. The two-dimensional shape of the source has been investigated in the longitudinal co-moving frame. A significant difference between the transverse and the longitudinal dimensions is observed. The high statistics of the collected sample allowed the study of the Bose-Einstein correlations as a function of rapidity, charged particle multiplicity and hadronic energy. A weak dependence of both radius and chaoticity on multiplicity and hadronic energy is found.

Web-Page: http://dx.doi.org/10.1016/j.nuclphysb.2004.03.011; http://www.sciencedirect.com/web-editions?_ob=GatewayURL&_origin=SPIRES&_method=citationSearch&_volkey=05503213%23686%233%23&_version=1&md5=e4f4eb4cfa0cf7add5259352bca5a90a

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