Precise Determination of Electroweak Parameters in Neutrino-Nucleon Scattering

Zeller, G. P.; McFarland, K. S.; Adams, T.; Alton, A.; Avvakumov, S.; Barbaro, L. de; Barbaro, P. de; Bernstein, R. H.; Bodek, A.; Bolton, T.; Brau, J.; Buchholz, D.; Budd, H. S.; Bugel, L.; Conrad, J. M.; Drucker, R. B.; Fleming, B. T.; Frey, R.; Formaggio, J. A.; Goldman, J.; Goncharov, M.; Harris, Deborah A.; Johnson, R. A.; Kim, J. H.; Koutsoliotas, S.; Lamm, M. J.; Marsh, W.; Mason, D.; McDonald, John; McNulty, C.; Naples, D.; Nienaber, P.; Romosan, A.; Sakumoto, W. K.; Schellman, H.; Shaevitz, M. H.; Spentzouris, P.; Stern, E. G.; Suwonjandee, N.; Tzanov, M.; Vakili, M.; Vaitaitis, A.; Yang, U. K.; Yu, J.; Zimmerman, E. D.

doi:10.1103/physrevlett.88.091802

Cited by 558 publications

(187 citation statements)

References 20 publications

Supporting

Mentioning

185

Contrasting

Order By: Relevance

“…This uncertainty can be reduced by using the Near Detector (ND) data to constrain the calculated flux. Several previous experiments used their neutrino data to constrain the yield of hadrons off the target [82,83,84,85], but the variable beam design of NuMI allows this to be accomplished with fewer assumptions, eg. about neutrino interaction cross sections.…”

Section: Constraint On Flux Uncertainties Using Near Detector Datamentioning

confidence: 99%

Observation of Disappearance of Muon Neutrinos in the NuMI Beam

Pavlović¹

2008

View full text Add to dashboard Cite

Section: Constraint On Flux Uncertainties Using Near Detector Datamentioning

confidence: 99%

Observation of Disappearance of Muon Neutrinos in the NuMI Beam

Pavlović¹

2008

View full text Add to dashboard Cite

“…[19] for a discussion). In particular, for light mediators, bounds from high-energy neutrino scattering experiments such as CHARM [20] and NuTeV [21] do not apply. In this framework, prior to the COHERENT results, the only direct bounds on NC-NSI with quarks arise from their effect on neutrino oscillations when propagating in matter (for bounds in the heavy mediator case see [11]).…”

mentioning

confidence: 99%

COHERENT enlightenment of the neutrino dark side

et al. 2017

View full text Add to dashboard Cite

In the presence of non-standard neutrino interactions (NSI), oscillation data are affected by a degeneracy which allows the solar mixing angle to be in the second octant (aka the dark side) and implies a sign flip of the atmospheric mass-squared difference. This leads to an ambiguity in the determination of the ordering of neutrino masses, one of the main goals of the current and future experimental neutrino program. We show that the recent observation of coherent neutrino-nucleus scattering by the COHERENT experiment, in combination with global oscillation data, excludes the NSI degeneracy at the 3.1σ (3.6σ) CL for NSI with up (down) quarks.The standard three-flavour oscillation scenario is supported by a large amount of data from neutrino oscillation experiments. The determination of oscillation parameters (see, e.g., Ref.[1]) is very robust, and for a broad range of new physics scenarios only small perturbations of the standard oscillation picture are allowed by data. There is, however, an exception to this statement: in the presence of non-standard neutrino interactions (NSI) [2-4] a degeneracy exists in oscillation data, leading to a qualitative change of the lepton mixing pattern. This was first observed in the context of solar neutrinos, where for suitable NSI the data can be explained by a mixing angle θ 12 in the second octant, the so-called LMA-Dark (LMA-D) [5] solution. This is in sharp contrast to the established standard MSW solution [2,6], which requires a mixing angle θ 12 in the first octant.The origin of the LMA-D solution is a degeneracy in oscillation probabilities due to a symmetry of the Hamiltonian describing neutrino evolution in the presence of NSI [7][8][9][10]. This degeneracy involves not only the octant of θ 12 but also a change in sign of the larger neutrino mass-squared difference, ∆m 2 31 , which is used to parameterize the type of neutrino mass ordering (normal versus inverted). Hence, the LMA-D degeneracy makes it impossible to determine the neutrino mass ordering by oscillation experiments [10], and therefore jeopardizes one of the main goals of the upcoming neutrino oscillation program. As discussed in Refs. [5,[10][11][12], non-oscillation data (such as that from neutrino scattering experiments) is needed to break this degeneracy.Recently, coherent neutrino-nucleus scattering has been observed for the first time by the COHERENT experiment [13], using neutrinos produced at the Spallation Neutron Source (SNS) in Oak Ridge National Laboratory. The observed interaction rate is in good agreement with the Standard Model (SM) prediction and can be used to constrain NSI. In this Letter we show that this result excludes the LMA-D solution at 3.1σ (3.6σ) CL for NSI with up (down) quarks when combined with oscillation data.NSI formalism and the LMA-D degeneracy. We consider the presence of neutral-current (NC) NSI in the form of dimension-six four-fermion operators, following the notation of Ref. [8]. Since we are interested in the contribution of the NSI to the effective potential of ne...

show abstract

“…Over the past couple of decades, the three published measurements with sufficient sensitive to probe the TeV-scale were the weak charge measurement in 133 Cs [17], the NuTeV neutrino deep-inelastic scattering measurement [18] and the measurement of A PV in electron-electron (Møller) scattering [19] at SLAC. As we await the restart of the Large Hadron Collider (LHC) at full beam energy and design luminosity, improving these constraints and expanding their reach to include more fermion scattering combinations takes on increased significance.…”

Section: Precision Weak Neutral Current Measurementsmentioning

confidence: 99%

Parity Violating Electron Scattering

Kumar¹

2003

AIP Conference Proceedings

View full text Add to dashboard Cite

Measurements of parity-violating asymmetries in the scattering of longitudinally polarized electrons off unpolarized fixed targets are used to access leptonic and semi-leptonic weak neutral current amplitudes. One thrust of the current program is the measurement the elastic neutral weak amplitude at very low Q 2 from scattering off a heavy spinless nucleus, which is sensitive to the presence of a neutron skin. A second major thrust is the neutral current elastic amplitude at very low Q 2 off protons and electrons and in the DIS regime off deuterium, which allows precision measurements of the weak mixing angle at low energy and is thus sensitive to new physics beyond the Standard Model.

show abstract

Precise Determination of Electroweak Parameters in Neutrino-Nucleon Scattering

Cited by 558 publications

References 20 publications

Observation of Disappearance of Muon Neutrinos in the NuMI Beam

Observation of Disappearance of Muon Neutrinos in the NuMI Beam

COHERENT enlightenment of the neutrino dark side

Parity Violating Electron Scattering

Contact Info

Product

Resources

About