Hlavná stránka > A Measurement of Coherent Neutral Pion Production in Neutrino Neutral Current Interactions in NOMAD experiment |
Article | |
Report number | arXiv:0910.0062 |
Title | A Measurement of Coherent Neutral Pion Production in Neutrino Neutral Current Interactions in NOMAD experiment |
Author(s) |
Kullenberg, C.T. (South Carolina U.) ; Mishra, S.R. (South Carolina U.) ; Seaton, M.B. (South Carolina U.) ; Kim, J.J. (South Carolina U.) ; Tian, X.C. (South Carolina U.) ; Scott, A.M. (South Carolina U.) ; Kirsanov, M. (Moscow, INR) ; Petti, R. (South Carolina U.) ; Alekhin, S. (Serpukhov, IHEP) ; Astier, P. (Paris, LPTHE ; Paris U., VI-VII) ; Autiero, D. (CERN) ; Baldisseri, A. (DAPNIA, Saclay ; Saclay) ; Baldo-Ceolin, M. (Padua U. ; INFN, Padua) ; Banner, M. (Paris, LPTHE ; Paris U., VI-VII) ; Bassompierre, G. (Annecy, LAPP) ; Benslama, K. (Lausanne U.) ; Besson, N. (DAPNIA, Saclay ; Saclay) ; Bird, I. (CERN ; Lausanne U.) ; Blumenfeld, B. (Johns Hopkins U.) ; Bobisut, F. (Padua U. ; INFN, Padua) ; Bouchez, J. (DAPNIA, Saclay ; Saclay) ; Boyd, S. (Sydney U.) ; Bueno, A. (Harvard U. ; Zurich, ETH) ; Bunyatov, S. (Dubna, JINR) ; Camilleri, L. (CERN) ; Cardini, A. (UCLA) ; Cattaneo, P.W. (Pavia U. ; INFN, Pavia) ; Cavasinni, V. (Pisa U. ; INFN, Pisa) ; Cervera-Villanueva, A. (CERN ; Valencia U., IFIC) ; Challis, R. (Melbourne U.) ; Chukanov, A. (Dubna, JINR) ; Collazuol, G. (Padua U. ; INFN, Padua) ; Conforto, G. (CERN ; Urbino U. ; INFN, Florence) ; Conta, C. (Pavia U. ; INFN, Pavia) ; Contalbrigo, M. (Padua U. ; INFN, Padua) ; Cousins, R. (UCLA) ; Degaudenzi, H. (Lausanne U.) ; De Santo, A. (CERN ; Pisa U. ; INFN, Pisa) ; Del Prete, T. (Pisa U. ; INFN, Pisa) ; Di Lella, L. (CERN) ; do Couto e Silva, E. (CERN) ; Dumarchez, J. (Paris, LPTHE ; Paris U., VI-VII) ; Ellis, M. (Sydney U.) ; Feldman, G.J. (Harvard U.) ; Ferrari, R. (Pavia U. ; INFN, Pavia) ; Ferrere, D. (CERN) ; Flaminio, V. (Pisa U. ; INFN, Pisa) ; Fraternali, M. (Pavia U. ; INFN, Pavia) ; Gaillard, J.-M. (Annecy, LAPP) ; Gangler, E. (CERN ; Paris, LPTHE ; Paris U., VI-VII) ; Geiser, A. (Dortmund U. ; CERN) ; Geppert, D. (Dortmund U.) ; Gibin, D. (Padua U. ; INFN, Padua) ; Gninenko, S. (CERN ; Moscow, INR) ; Godley, A. (South Carolina U.) ; Gomez-Cadenas, J.-J. (CERN ; Valencia U., IFIC) ; Gosset, J. (DAPNIA, Saclay ; Saclay) ; Gossling, C. (Dortmund U.) ; Gouanere, M. (Annecy, LAPP) ; Grant, A. (CERN) ; Graziani, G. (Florence U. ; INFN, Florence) ; Guglielmi, A. (Padua U. ; INFN, Padua) ; Hagner, C. (DAPNIA, Saclay ; Saclay) ; Hernando, J. (Valencia U., IFIC) ; Hurst, P. (Harvard U.) ; Hyett, N. (Melbourne U.) ; Iacopini, E. (Florence U. ; INFN, Florence) ; Joseph, C. (Lausanne U.) ; Juget, F. (Lausanne U.) ; Kent, N. (Melbourne U.) ; Klimov, O. (Dubna, JINR) ; Kokkonen, J. (CERN) ; Kovzelev, A. (Moscow, INR ; Pavia U. ; INFN, Pavia) ; Krasnoperov, A. (Annecy, LAPP ; Dubna, JINR) ; Kulagin, Sergey A. (Moscow, INR) ; Lacaprara, S. (Padua U. ; INFN, Padua) ; Lachaud, C. (Paris, LPTHE ; Paris U., VI-VII) ; Lakic, B. (Boskovic Inst., Zagreb) ; Lanza, A. (Pavia U. ; INFN, Pavia) ; La Rotonda, L. (Calabria U. ; INFN, Cosenza) ; Laveder, M. (Padua U. ; INFN, Padua) ; Letessier-Selvon, A. (Paris, LPTHE ; Paris U., VI-VII) ; Levy, J.-M. (Paris, LPTHE ; Paris U., VI-VII) ; Ling, J. (South Carolina U.) ; Linssen, L. (CERN) ; Ljubivc, A. (Boskovic Inst., Zagreb) ; Long, J. (Johns Hopkins U.) ; Lupi, A. (Florence U. ; INFN, Florence) ; Lyubushkin, V. (Dubna, JINR) ; Marchionni, A. (Florence U. ; INFN, Florence) ; Martelli, F. (Urbino U. ; INFN, Florence) ; Mechain, X. (DAPNIA, Saclay ; Saclay) ; Mendiburu, J.-P. (Annecy, LAPP) ; Meyer, J.-P. (DAPNIA, Saclay ; Saclay) ; Mezzetto, M. (Padua U. ; INFN, Padua) ; Moorhead, G.F. (Melbourne U.) ; Naumov, D. (Dubna, JINR) ; Nedelec, P. (Annecy, LAPP) ; Nefedov, Yu. (Dubna, JINR) ; Nguyen-Mau, C. (Lausanne U.) ; Orestano, D. (Rome III U. ; INFN, Rome3) ; Pastore, F. (Rome III U. ; INFN, Rome3) ; Peak, L.S. (Sydney U.) ; Pennacchio, E. (Urbino U. ; INFN, Florence) ; Pessard, H. (Annecy, LAPP) ; Placci, A. (CERN) ; Polesello, G. (Pavia U. ; INFN, Pavia) ; Pollmann, D. (Dortmund U.) ; Polyarush, A. (Moscow, INR) ; Poulsen, C. (Melbourne U.) ; Popov, B. (Dubna, JINR ; Paris, LPTHE ; Paris U., VI-VII) ; Rebuffi, L. (Padua U. ; INFN, Padua) ; Rico, J. (Zurich, ETH) ; Riemann, P. (Dortmund U.) ; Roda, C. (CERN ; Pisa U. ; INFN, Pisa) ; Rubbia, A. (CERN ; Zurich, ETH) ; Salvatore, F. (Pavia U. ; INFN, Pavia) ; Samoylov, O. (Dubna, JINR) ; Schahmaneche, K. (Paris, LPTHE ; Paris U., VI-VII) ; Schmidt, B. (Dortmund U. ; CERN) ; Schmidt, T. (Dortmund U.) ; Sconza, A. (Padua U. ; INFN, Padua) ; Sevior, M. (Melbourne U.) ; Sillou, D. (Annecy, LAPP) ; Soler, F.J.P. (CERN ; Sydney U.) ; Sozzi, G. (Lausanne U.) ; Steele, D. (Johns Hopkins U. ; Lausanne U.) ; Stiegler, U. (CERN) ; Stipcevic, M. (Boskovic Inst., Zagreb) ; Stolarczyk, Th. (DAPNIA, Saclay ; Saclay) ; Tareb-Reyes, M. (Lausanne U.) ; Taylor, G.N. (Melbourne U.) ; Tereshchenko, V. (Dubna, JINR) ; Toropin, A. (Moscow, INR) ; Touchard, A.-M. (Paris, LPTHE ; Paris U., VI-VII) ; Tovey, S.N. (CERN ; Melbourne U.) ; Tran, M.-T. (Lausanne U.) ; Tsesmelis, E. (CERN) ; Ulrichs, J. (Sydney U.) ; Vacavant, L. (Lausanne U.) ; Valdata-Nappi, M. (Calabria U. ; INFN, Cosenza) ; Valuev, V. (Dubna, JINR ; UCLA) ; Vannucci, F. (Paris, LPTHE ; Paris U., VI-VII) ; Varvell, K.E. (Sydney U.) ; Veltri, M. (Urbino U. ; INFN, Florence) ; Vercesi, V. (Pavia U. ; INFN, Pavia) ; Vidal-Sitjes, G. (CERN) ; Vieira, J.-M. (Lausanne U.) ; Vinogradova, T. (UCLA) ; Weber, F.V. (Harvard U. ; CERN) ; Weisse, T. (Dortmund U.) ; Wilson, F.F. (CERN) ; Winton, L.J. (Melbourne U.) ; Wu, Q. (South Carolina U.) ; Yabsley, B.D. (Sydney U.) ; Zaccone, H. (DAPNIA, Saclay ; Saclay) ; Zuber, K. (Dortmund U.) ; Zuccon, P. (Padua U. ; INFN, Padua) |
Publication | 2009 |
Imprint | 02 Oct 2009 |
Number of pages | 23 |
Note | Comments: 23 pages, 9 figures 23 pages, 9 figures, accepted for publication in Phys. Lett. B |
In: | Phys. Lett. B 682 (2009) 177-184 |
DOI | 10.1016/j.physletb.2009.10.083 |
Subject category | Particle Physics - Experiment |
Accelerator/Facility, Experiment | CERN SPS ; NOMAD WA96 |
Abstract | We present a study of exclusive neutral pion production in neutrino-nucleus Neutral Current interactions using data from the NOMAD experiment at the CERN SPS. The data correspond to $1.44 \times 10^6$ muon-neutrino Charged Current interactions in the energy range $2.5 \leq E_{\nu} \leq 300$ GeV. Neutrino events with only one visible $\pi^0$ in the final state are expected to result from two Neutral Current processes: coherent $\pi^0$ production, {\boldmath $\nu + {\cal A} \to \nu + {\cal A} + \pi^0$} and single $\pi^0$ production in neutrino-nucleon scattering. The signature of coherent $\pi^0$ production is an emergent $\pi^0$ almost collinear with the incident neutrino while $\pi^0$'s produced in neutrino-nucleon deep inelastic scattering have larger transverse momenta. In this analysis all relevant backgrounds to the coherent $\pi^0$ production signal are measured using data themselves. Having determined the backgrounds, and using the Rein-Sehgal model for the coherent $\pi^0$ production to compute the detection efficiency, we obtain {\boldmath $4630 \pm 522 (stat) \pm 426 (syst)$} corrected coherent-$\pi^0$ events with $E_{\pi^0} \geq 0.5$ GeV. We measure {\boldmath $\sigma (\nu {\cal A} \to \nu {\cal A} \pi^0) = [ 72.6 \pm 8.1(stat) \pm 6.9(syst) ] \times 10^{-40} cm^2/nucleus$}. This is the most precise measurement of the coherent $\pi^0$ production to date. |
Copyright/License | Elsevier B.V. (License, CC-BY-3.0) |