Publicación:
Measurement of Coherent Production of pi(+/-) in Neutrino and Antineutrino Beams on Carbon from E-upsilon of 1.5 to 20 GeV

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Fecha
2014
Autores
Aliaga, L
Altinok, O
Betancourt, M
Bodek, A
Bravar, A
Brooks, WK
Budd, H
Bustamante, MJ
Butkevich, A
Caicedo, DAM
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American Physical Society
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Abstracto
Neutrino-induced coherent charged pion production on nuclei ν(-)μA→μ±π A is a rare, inelastic interaction in which a small squared four-momentum
t
is transferred to the recoil nucleus, leaving it intact in the reaction. In the scintillator tracker of MINERvA, we remove events with evidence of particles from nuclear breakup and reconstruct
t
from the final-state pion and muon. We select low
t
events to isolate a sample rich in coherent candidates. By selecting low
t
events, we produce a model-independent measurement of the differential cross section for coherent scattering of neutrinos and antineutrinos on carbon. We find poor agreement with the predicted kinematics in neutrino generators used by current oscillation experiments.
Descripción
This work was supported by the Fermi National Accelerator Laboratory under U.S. Department of Energy Contract No. DE-AC02-07CH11359, which included the MINERvA construction project. Construction support was also granted by the United States National Science Foundation under Grant No. PHY-0619727 and by the University of Rochester. Support for participating scientists was provided by NSF and DOE (USA), by CAPES and CNPq (Brazil), by CoNaCyT (Mexico), by CONICYT (Chile), by CONCYTEC, DGI-PUCP and IDI/IGI-UNI (Peru), by Latin American Center for Physics (CLAF), and by RAS and the Russian Ministry of Education and Science (Russia). We thank the MINOS Collaboration for use of its near detector data. Finally, we thank the staff of Fermilab for support of the beam line and the detector.
Palabras clave
Partículas Elementales, Carbono, Neutrones
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