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 x 10(6) muon-neutrino Charged Current interactions in the energy range 2.5 <= E(nu) <= 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, nu + A -> nu + 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 4630 +/- 522(stat) +/- 426(syst) corrected coherent-pi(0) events with E(pi 0) >= 0.5 GeV. We measure sigma(nu A -> nu A pi(0)) = 172.6 +/- 8.1 (stat) +/- 6.9(syst)] x 10(-40) cm(2)/nucleus. This is the most precise measurement of the coherent pi(0) production to date. (C) 2009 Elsevier B.V. All rights reserved.

Kullenberg, C.t., Mishra, S.r., Seaton, M.b., Kim, J.j., Tian, X.c., Scott, A.m., et al. (2009). A measurement of coherent neutral pion production in neutrino neutral current interactions in the NOMAD experiment. PHYSICS LETTERS. SECTION B, 682(2), 177-184 [10.1016/j.physletb.2009.10.083].

A measurement of coherent neutral pion production in neutrino neutral current interactions in the NOMAD experiment

ORESTANO, DOMIZIA;
2009-01-01

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 x 10(6) muon-neutrino Charged Current interactions in the energy range 2.5 <= E(nu) <= 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, nu + A -> nu + 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 4630 +/- 522(stat) +/- 426(syst) corrected coherent-pi(0) events with E(pi 0) >= 0.5 GeV. We measure sigma(nu A -> nu A pi(0)) = 172.6 +/- 8.1 (stat) +/- 6.9(syst)] x 10(-40) cm(2)/nucleus. This is the most precise measurement of the coherent pi(0) production to date. (C) 2009 Elsevier B.V. All rights reserved.
Kullenberg, C.t., Mishra, S.r., Seaton, M.b., Kim, J.j., Tian, X.c., Scott, A.m., et al. (2009). A measurement of coherent neutral pion production in neutrino neutral current interactions in the NOMAD experiment. PHYSICS LETTERS. SECTION B, 682(2), 177-184 [10.1016/j.physletb.2009.10.083].
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11590/120782
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 35
  • ???jsp.display-item.citation.isi??? 29
social impact