scholarly journals Impact of Nonstandard Interactions on Neutrino-Nucleon Scattering

2016 ◽  
Vol 2016 ◽  
pp. 1-11 ◽  
Author(s):  
D. K. Papoulias ◽  
T. S. Kosmas
Keyword(s):  
Cross Sections ◽  
Strange Quark ◽  
Event Rate ◽  
Neutral Current ◽  
Form Factors ◽  
Nucleon Interaction ◽  
Nucleon Scattering ◽  
Neutrino Scattering ◽  
Nucleon Form Factors ◽  
Lepton Flavour

Nonstandard neutrino-nucleon interaction is formulated and explored within the energy range of quasi-elastic scattering. In particular, the study focuses on the neutral-current elastic (anti)neutrino scattering off nucleons described by the exotic reactionsνα(ν¯α)+n→νβ(ν¯β)+nandνα(ν¯α)+p→νβ(ν¯β)+p, which provide corrections to the dominant Standard Model processes. In this context, it is shown that the required exotic nucleon form factors may have a significant impact on the relevant cross sections. Besides cross sections, the event rate is expected to be rather sensitive to the magnitude of the lepton-flavour violating parameters resulting in an excess of events. The overlap of nonstandard interactions and strange quark contributions, in the region of few GeV neutrino energies, is also examined. The formalism is applied for the case of the relevant neutrino-nucleon scattering experiments (LSND, MiniBooNE, etc.) and motivates the notion that such facilities have high potential to probe NSI.

Cross sections for neutral-current neutrino scattering on208Pb

2002 ◽  
Vol 66 (5) ◽  
Author(s):  
N. Jachowicz ◽  
K. Heyde ◽  
J. Ryckebusch
Keyword(s):  
Cross Sections ◽  
Neutral Current ◽  
Neutrino Scattering

scholarly journals Coherent neutrino scattering off the 48Ti nucleus

2012 ◽  
Vol 20 ◽  
pp. 104
Author(s):  
D. K. Papoulias ◽  
T. S. Kosmas
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Energy Region ◽  
Decomposition Method ◽  
Form Factors ◽  
Momentum Dependence ◽  
Neutrino Scattering ◽  
Neutrino Detection ◽  
Supernova Neutrino ◽  
Coherent Neutrino Scattering

The method of fractional occupation probabilities of the orbits is adopted in order to obtain nuclear form factors to be used for reliable cross sections calculations of the dominant coherent neutrino-nucleus reaction channel. To this purpose, the multipole decomposition method of Donnelly-Walecka is employed. The response of the 48Ti nucleus in solar and Supernova neutrino detection is investigated through our realistic nuclear structure cross sections calculations, based on the solution of the BCS equations. The present results indicate that the momentum dependence of the nuclear form factors cannot be neglected from the cross section, especially in the energy region of Supernova neutrinos (or for neutrinos having higher energies), because differences of even orders of magnitude may occur.

scholarly journals Cross sections for the neutral current νe - 116Cd scattering reaction

2020 ◽  
Vol 16 ◽  
pp. 97
Author(s):  
K. G. Balasi ◽  
T. S. Kosmas ◽  
P. C. Divari ◽  
V. C. Chasioti
Keyword(s):  
Cross Sections ◽  
Neutral Current ◽  
Random Phase ◽  
Initial Energy ◽  
Electron Neutrino ◽  
Excitation Energies ◽  
Quasi Particle ◽  
Neutrino Scattering ◽  
Supernova Neutrino ◽  
Nuclear Response

The cross sections for neutrino scattering off the 116Cd nucleus have been computed by utilizing the Quasi-particle Random Phase Approximation (QRPA). An- gular and initial energy dependence of the neutrino-nucleus cross sections have been calculated at low and intermediate electron neutrino energies up to 100 MeV. By solving the QRPA equations and fixing the appropriate parameters the lowest lying excitation energies spectrum was reproduced. The contributions from multipole ex- citations was examined. The obtained results could be used for studying the nuclear response of this isotope to supernova neutrino spectra.

EFFECT OF STRANGENESS FOR NEUTRINO-NUCLEON AND NEUTRINO-NUCLEUS SCATTERING IN QUASIELASTIC REGION

2009 ◽  
Vol 24 (11n13) ◽  
pp. 955-959
Author(s):  
K. S. KIM ◽  
MYUNG-KI CHEOUN ◽  
BYUNG GEEL YU
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Strange Quark ◽  
Neutral Current ◽  
Charged Current ◽  
Particle Model ◽  
Protons And Neutrons ◽  
Nucleus Scattering ◽  
Single Particle Model ◽  
The Cross

We present the neutral-current (NC) and charged-current (CC) reactions by incident neutrino (antineutrino) scattering on the nucleon, and also on the 12 C target in quasi-elastic region within the framework of a relativistic single particle model. Effects of the strangeness are studied on the cross sections, the ratios between the NC and CC reactions, and the asymmetries. We found that there exists some cancellation of the strange quark contributions between the knocked-out protons and neutrons in the neutrino (antineutrino)-nucleus scattering. The effect of the strangeness on the asymmetry exhibits larger than that on the ratio and the cross section.

scholarly journals Coherent and Incoherent Neutral Current Scattering for Supernova Detection

2012 ◽  
Vol 2012 ◽  
pp. 1-18 ◽  
Author(s):  
P. C. Divari
Keyword(s):  
Cross Sections ◽  
Neutral Current ◽  
Neutrino Energy ◽  
Total Cross Sections ◽  
Neutrino Scattering ◽  
Neutrino Detection ◽  
Supernova Neutrino ◽  
Dirac Distribution ◽  
The Individual ◽  
Event Rates

The total cross sections as well as the neutrino event rates are calculated in the neutral current neutrino scattering off40Ar and132Xe isotopes at neutrino energies (Ev<100 MeV). The individual contribution coming from coherent and incoherent channels is taking into account. An enhancement of the neutral current component is achieved via the coherent (0gs+→0gs+) channel which is dominant with respect to incoherent (0gs+→Jf) one. The response of the above isotopes as a supernova neutrino detection has been considered, assuming a two parameter Fermi-Dirac distribution for the supernova neutrino energy spectra. The calculated total cross sections are tested on a gaseous spherical TPC detector dedicated for supernova neutrino detection.

ASYMMETRIES IN POLARIZED ELECTRON SCATTERING AND THE STRANGENESS CONTENT OF THE NUCLEON

2009 ◽  
Vol 24 (11n13) ◽  
pp. 881-886
Author(s):  
SEBASTIAN BAUNACK
Keyword(s):  
Electron Scattering ◽  
Strange Quark ◽  
Form Factors ◽  
Strange Quarks ◽  
Quark Contribution ◽  
Nucleon Form Factors ◽  
Strangeness Content ◽  
Existing Data

In the viewpoint of QCD, the nucleon is made up of constituent quarks, sea quarks and gluons. Concerning the quark sea, also strange quarks can contribute to the nucleon properties. Parity violating electron scattering offers a tool to investigate the strange quark contribution to the nucleon form factors. The measurements of different experiments are discussed and the recent results from the A4 collaboration at MAMI is presented. Altogether the existing data allow to give constraints on the strangeness contribution.

scholarly journals Weak charged and neutral current induced one pion production off the nucleon

2016 ◽  
Vol 25 (02) ◽  
pp. 1650010 ◽  
Author(s):  
M. Rafi Alam ◽  
M. Sajjad Athar ◽  
S. Chauhan ◽  
S. K. Singh
Keyword(s):  
Cross Sections ◽  
Pion Production ◽  
Neutral Current ◽  
Form Factors ◽  
Scattering Data ◽  
Nonlinear Sigma Model ◽  
Electromagnetic Resonance ◽  
Helicity Amplitudes ◽  
Nonresonant Background ◽  
Scattering Cross Sections

We present a study of neutrino/antineutrino induced charged current (CC) and neutral current (NC) single pion production (SPP) off the nucleon. For this, we have considered [Formula: see text] resonance, nonresonant background (NRB) terms, other higher resonances like [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text] and [Formula: see text]. For the NRB terms a microscopic approach based on [Formula: see text] nonlinear sigma model has been used. The vector form factors for the resonances are obtained by using the relationship between the electromagnetic resonance form factors and helicity amplitudes provided by MAID. Axial coupling [Formula: see text] in the case of [Formula: see text] resonance is obtained by fitting the ANL and BNL [Formula: see text]-deuteron reanalyzed scattering data. The results are presented with and without deuteron effect for the total scattering cross-sections for all possible channels, viz. [Formula: see text] and [Formula: see text], where [Formula: see text], [Formula: see text] or [Formula: see text] and [Formula: see text].

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