Direct neutrino mass experiments and exotic charged current interactions

Ludl, Patrick Otto; Rodejohann, Werner

doi:10.1007/jhep06(2016)040

Cited by 35 publications

(42 citation statements)

References 77 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These studies have a long history in the literature, see e.g. [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] and [20] for a recent review.…”

Section: Introductionmentioning

confidence: 99%

Reactor neutrino oscillations as constraints on effective field theory

Falkowski

González–Alonso

Tabrizi

2019

J. High Energ. Phys.

View full text Add to dashboard Cite

We study constraints on the Standard Model Effective Field Theory (SMEFT) from neutrino oscillations in short-baseline reactor experiments. We calculate the survival probability of reactor antineutrinos at the leading order in the SMEFT expansion, that is including linear effects of dimension-6 operators. It is shown that, at this order, reactor experiments alone cannot probe charged-current contact interactions between leptons and quarks that are of the (pseudo)vector (V±A) or pseudo-scalar type. We also note that flavor-diagonal (pseudo)vector coefficients do not have observable effects in oscillation experiments. In this we reach novel or different conclusions than prior analyses of non-standard neutrino interactions. On the other hand, reactor experiments offer a unique opportunity to probe tensor and scalar SMEFT operators that are offdiagonal in the lepton-flavor space. We derive constraints on the corresponding SMEFT parameters using the most recent data from the Daya Bay and RENO experiments.

show abstract

“…These studies have a long history in the literature, see e.g. [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] and [20] for a recent review.…”

Section: Introductionmentioning

confidence: 99%

Reactor neutrino oscillations as constraints on effective field theory

Falkowski

González–Alonso

Tabrizi

2019

J. High Energ. Phys.

View full text Add to dashboard Cite

show abstract

“…Here, A = 3 H + and B = 3 He 2+ are treated as elementary fermions, see Ref. [23]. Assigning the momenta p 1 , p 2 , p 3 , and p 4 to neutrino, pseudoscalar, electron, and B, respectively, the amplitude takes the form…”

Section: Discussionmentioning

confidence: 99%

“…with the Fermi function [23] F (Z, E e ) = 2(1 + γ) e πy (2p e R) 2(1−γ) |Γ(γ + iy)| 2 Γ(2γ + 1) 2 , (A12) with coefficients y = ZαE e /p e and γ = (1 − Z 2 α 2 ) 1/2 as well as the Gamma function Γ, not to be confused with the decay rate. The radius and electric charge of the 3 He 2+ nucleus are given by R 2.884 × 10 −3 /m e and Z = 2, respectively.…”

mentioning

confidence: 99%

Tritium beta decay with additional emission of new light bosons

Arcadi

Heeck

Heizmann

et al. 2019

J. High Energ. Phys.

Self Cite

View full text Add to dashboard Cite

We consider tritium beta decay with additional emission of light pseudoscalar or vector bosons coupling to electrons or neutrinos. The electron energy spectrum for all cases is evaluated and shown to be well estimated by approximated analytical expressions. We give the statistical sensitivity of Katrin to the mass and coupling of the new bosons, both in the standard setup of the experiment as well as for future modifications in which the full energy spectrum of tritium decay is accessible.

show abstract

“…This implies that beta decay can occur dominantly via W R exchange, which is the leading contribution as long as (m W L /M W R ) 4 is larger than θ 2 . While being an attractive possibility, this simple scenario is difficult to realize as LHC limits on M W R are quite strong and W L -W R mixing needs to be very small in order to suppress additional diagrams for DM decay (other options for new interactions of keV-scale neutrinos in beta decay are less constrained [50], but have not been studied yet regarding DM decay). The example demonstrates nevertheless that DM decay and beta decay may not necessarily be related, and therefore X-ray limits can be evaded.…”

Section: (Iii) Decoupling Beta Decay From X-ray Decaymentioning

confidence: 99%

Prospects for finding sterile neutrino dark matter at KATRIN

et al. 2019

Self Cite

View full text Add to dashboard Cite

We discuss under what circumstances a signal in upcoming laboratory searches for keVscale sterile neutrinos would be compatible with those particles being a sizable part or all of dark matter. In the parameter space that will be experimentally accessible by KA-TRIN/TRISTAN, strong X-ray limits need to be relaxed and dark matter overproduction needs to be avoided. We discuss postponing the dark matter production to lower temperatures, a reduced sterile neutrino contribution to dark matter, and a reduction of the branching ratio in photons and active neutrinos through cancellation with a new physics diagram. Both the Dodelson-Widrow and the Shi-Fuller mechanisms for sterile neutrino dark matter production are considered. As a final exotic example, potential consequences of CPT violation are discussed. a cristina.benso@mpi-hd.mpg.de b vedran.brdar@mpi-hd.mpg.de c manfred.lindner@mpi-hd.mpg.de d werner.rodejohann@mpi-hd.mpg.de 1 In what follows, for brevity, we will refer to such particles simply as "sterile neutrinos". We note that the sterile neutrinos at eV-scale are also well studied in the context of short-baseline neutrino oscillation anomalies [6], but consideration of such states is beyond the scope of this work. 2 see also [14] where this is achieved in the framework of scotogenic model.

show abstract

Direct neutrino mass experiments and exotic charged current interactions

Cited by 35 publications

References 77 publications

Reactor neutrino oscillations as constraints on effective field theory

Reactor neutrino oscillations as constraints on effective field theory

Tritium beta decay with additional emission of new light bosons

Prospects for finding sterile neutrino dark matter at KATRIN

Contact Info

Product

Resources

About