scholarly journals On the Possibility of Separating Coherent and Incoherent (Anti)neutrino Scattering on Nuclei

2021 ◽  
Vol 84 (3) ◽  
pp. 314-327
Author(s):  
V. A. Bednyakov ◽  
D. V. Naumov ◽  
I. V. Titkova
Keyword(s):  
Quantum State ◽  
Nuclear Physics ◽  
New Physics ◽  
Neutrino Energy ◽  
Smooth Transition ◽  
Inelastic Interaction ◽  
Inelastic Process ◽  
Kinematical Region ◽  
Neutrino Scattering ◽  
Nucleus Scattering

Abstract The discovery of coherent neutrino–nucleus scattering in the COHERENT experiment opened a source of new information for fundamental investigations in the realms of neutrino and nuclear physics, as well as in the realms of searches for new physics beyond the Standard Model. Owing to substantial momentum transfers, a feature peculiar to the kinematical region of this experiment is that the effect of coherence is mixed with a sizable incoherent contribution rather than being seen in a pure form. On one hand, this leads to additional systematic uncertainties in studying the neutrino component of the coherence effect as such. On the other hand, this makes it possible to study a dynamical transition between the coherent and incoherent scattering modes and, in principle, to separate them experimentally. In our opinion, a consistent measurement of the coherent and incoherent cross sections for (anti)neutrino scattering on a nucleus in the same experiment seems a unique possibility, and its implementation would of course provide new data for neutrino physics, as well as for nuclear and new physics. In the present study, it is shown that this possibility is implementable not only in experiments that explore coherent neutrino and antineutrino scattering on various nuclei at accelerators, where the neutrino energy reaches several hundred MeV units but also in reactor experiments, where antineutrino energies do not exceed 10 MeV. The respective estimation is based on the approach that controls qualitatively a ‘‘smooth transition’’ of the cross section for (anti)neutrino–nucleus scattering from a coherent (or elastic) to an incoherent (inelastic) mode. In the former case, the target nucleus remains in the initial quantum state, while, in the latter case, its quantum state changes. Observation of a specific number of photons that have rather high energies and which remove the excitation of the nucleus after its inelastic interaction with (anti)neutrinos is proposed to be used as a signal from such an inelastic process. An upper limit on the number of such photons is obtained in this study.

scholarly journals Flavor-dependent radiative corrections in coherent elastic neutrino-nucleus scattering

2021 ◽  
Vol 2021 (2) ◽  
Author(s):  
Oleksandr Tomalak ◽  
Pedro Machado ◽  
Vishvas Pandey ◽  
Ryan Plestid
Keyword(s):  
Standard Model ◽  
Cross Section ◽  
Cross Sections ◽  
Nuclear Physics ◽  
Heavy Particle ◽  
New Physics ◽  
Effective Field ◽  
Radiative Corrections ◽  
The Standard Model ◽  
Nucleus Scattering

Abstract We calculate coherent elastic neutrino-nucleus scattering cross sections on spin-0 nuclei (e.g. 40Ar and 28Si) at energies below 100 MeV within the Standard Model and account for all effects of permille size. We provide a complete error budget including uncertainties at nuclear, nucleon, hadronic, and quark levels separately as well as perturbative error. Our calculation starts from the four-fermion effective field theory to explicitly separate heavy-particle mediated corrections (which are absorbed by Wilson coefficients) from light-particle contributions. Electrons and muons running in loops introduce a non- trivial dependence on the momentum transfer due to their relatively light masses. These same loops, and those mediated by tau leptons, break the flavor universality because of mass-dependent electromagnetic radiative corrections. Nuclear physics uncertainties significantly cancel in flavor asymmetries resulting in subpercent relative errors. We find that for low neutrino energies, the cross section can be predicted with a relative precision that is competitive with neutrino-electron scattering. We highlight potentially useful applications of such a precise cross section prediction ranging from precision tests of the Standard Model, to searches for new physics and to the monitoring of nuclear reactors.

scholarly journals Probing new physics with coherent neutrino scattering off nuclei

2005 ◽  
Vol 2005 (12) ◽  
pp. 021-021 ◽  
Author(s):  
Juan Barranco ◽  
Omar G Miranda ◽  
Timur I Rashba
Keyword(s):  
New Physics ◽  
Neutrino Scattering ◽  
Coherent Neutrino Scattering

scholarly journals NEUTRINO–ELECTRON PROCESSES IN A DENSE MAGNETIZED PLASMA

2000 ◽  
Vol 15 (25) ◽  
pp. 1551-1556 ◽  
Author(s):  
N. V. MIKHEEV ◽  
E. N. NARYNSKAYA
Keyword(s):  
Neutrino Energy ◽  
Magnetized Plasma ◽  
Total Probability ◽  
Mean Values ◽  
Neutrino Scattering ◽  
The Standard Model ◽  
The Mean ◽  
Energy And Momentum ◽  
Strongly Degenerate ◽  
The Magnetic Field

The neutrino–electron processes in a dense strongly degenerate magnetized plasma are analyzed in the framework of the Standard Model. The total probability and the mean values of the neutrino energy and momentum losses are calculated. It is shown that neutrino scattering on the excited electrons with Landau level number conservation dominates under the conditions μ2 > eB ≫ μT but does not give a contribution into the neutrino force acting on plasma along the magnetic field.

scholarly journals Light new physics in coherent neutrino-nucleus scattering experiments

2015 ◽  
Vol 92 (9) ◽  
Author(s):  
Patrick deNiverville ◽  
Maxim Pospelov ◽  
Adam Ritz
Keyword(s):  
New Physics ◽  
Nucleus Scattering

scholarly journals Energy and momentum losses in the process of neutrino scattering on plasma electrons in the presence of a magnetic field

Open Physics ◽  
2003 ◽  
Vol 1 (1) ◽  
Author(s):  
Nickolay Mikheev ◽  
Elena Narynskaya
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Electron Scattering ◽  
Volume Density ◽  
Neutrino Energy ◽  
Magnetized Plasma ◽  
Neutrino Scattering ◽  
Energy And Momentum

AbstractThe neutrino-electron scattering in a dense degenerate magnetized plasma under the conditions μ 2 > 2eB ≫ μE is investigated. The volume density of the neutrino energy and momentum losses due to this process are calculated. The results we have obtained demonstrate that plasma in the presence of an external magnetic field is more transparent for neutrino than for non-magnetized plasma. It is shown that neutrino scattering under conditions considered does not lead to the neutrino force acting on plasma.

scholarly journals Constraining new physics from the first observation of coherent elastic neutrino-nucleus scattering

2019 ◽  
Vol 26 ◽  
pp. 17
Author(s):  
D. K. Papoulias ◽  
T. S. Kosmas
Keyword(s):  
Neutrino Physics ◽  
Magnetic Moment ◽  
Charge Radius ◽  
Sterile Neutrino ◽  
Neutral Current ◽  
New Physics ◽  
Electromagnetic Properties ◽  
Spallation Neutron Source ◽  
The Standard Model ◽  
Nucleus Scattering

The process of neutral-current coherent elastic neutrino-nucleus scattering, consistent with the Standard Model (SM) expectation, has been recently measured by the COHERENT experiment at the Spallation Neutron Source. On the basis of the observed signal and our nuclear calculations for the relevant Cs and I isotopes, the extracted constraints on both conventional and exotic neutrino physics are updated. The present study concentrates on various SM extensions involving vector and tensor nonstandard interactions as well as neutrino electromagnetic properties, with an emphasis on the neutrino magnetic moment and the neutrino charge radius. Furthermore, models addressing a light sterile neutrino state are examined, and the corresponding regions excluded by the COHERENT experiment are presented.   

scholarly journals THE JUPITER ELECTRON SCATTERING PROGRAM AT JEFFERSON LAB

2005 ◽  
Vol 20 (14) ◽  
pp. 3089-3092 ◽  
Author(s):  
Arie Bodek
Keyword(s):  
Electron Scattering ◽  
Nuclear Physics ◽  
High Energy Physics ◽  
High Energy ◽  
Neutrino Scattering ◽  
Jefferson Lab ◽  
Inclusive Electron ◽  
Nuclear Targets ◽  
Energy Physics

JUPITER (Jlab Unified Program to Investigate nuclear Targets and Electroproduction of Resonances) is a new collaboration between the Nuclear Physics electron scattering and High Energy Physics neutrino scattering communities to investigate the structure of nucleons and nuclei with electron and neutrino Beams. The first phase of JUPITER is Hall C experiment E04-001 on Inclusive Electron Scattering from Nuclear Targets. First data run of E04-001 is currently scheduled for January of 2005.

scholarly journals Degeneracy Patterns of Chiral Companions at Finite Temperature

Symmetry ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1400
Author(s):  
Juan M. Torres-Rincon
Keyword(s):  
Chiral Symmetry ◽  
Nuclear Physics ◽  
Degrees Of Freedom ◽  
Sigma Model ◽  
Smooth Transition ◽  
Linear Sigma Model ◽  
Spontaneous Breaking ◽  
Low Energies ◽  
Effective Theories ◽  
Chiral Partner

Chiral symmetry represents a fundamental concept lying at the core of particle and nuclear physics. Its spontaneous breaking in vacuum can be exploited to distinguish chiral hadronic partners, whose masses differ. In fact, the features of this breaking serve as guiding principles for the construction of effective approaches of QCD at low energies, e.g., the chiral perturbation theory, the linear sigma model, the (Polyakov)–Nambu–Jona-Lasinio model, etc. At high temperatures/densities chiral symmetry can be restored bringing the chiral partners to be nearly degenerated in mass. At vanishing baryochemical potential, such restoration follows a smooth transition, and the chiral companions reach this degeneration above the transition temperature. In this work I review how different realizations of chiral partner degeneracy arise in different effective theories/models of QCD. I distinguish the cases where the chiral states are either fundamental degrees of freedom or (dynamically-generated) composed states. In particular, I discuss the intriguing case in which chiral symmetry restoration involves more than two chiral partners, recently addressed in the literature.

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