Constraining nonstandard neutrino-electron interactions due to a new light spin-1 boson

Chiang, Cheng‐Wei; Faisel, Gaber; Lin, Yi-Fan; Tandean, Jusak

doi:10.1007/jhep10(2013)150

Cited by 9 publications

(10 citation statements)

References 71 publications

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“…From a collection of these data [65][66][67][68][69][70][71][72][73][74][75][76] tabulated in ref. [77], one can see that the majority of the measured and SM values of the cross section agree with each other at the one-sigma level. Consequently, to bound the eeSS ′ couplings, we may require σ eē→γSS ′ →γ / E not to exceed the corresponding one-sigma empirical errors (after combining the statistical and systematic errors in quadrature).…”

Section: Jhep04(2015)174mentioning

confidence: 53%

Lepton-flavored scalar dark matter with minimal flavor violation

Lee

Tandean

2015

J. High Energ. Phys.

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We explore scalar dark matter that is part of a lepton flavor triplet satisfying symmetry requirements under the hypothesis of minimal flavor violation. Beyond the standard model, the theory contains in addition three right-handed neutrinos that participate in the seesaw mechanism for light neutrino mass generation. The dark-matter candidate couples to standard-model particles via Higgs-portal renormalizable interactions as well as to leptons through dimension-six operators, all of which have minimal flavor violation built-in. We consider restrictions on the new scalars from the Higgs boson measurements, observed relic density, dark-matter direct detection experiments, LEP II measurements on e + e − scattering into a photon plus missing energy, and searches for flavor-violating lepton decays. The viable parameter space can be tested further with future data. Also, we investigate the possibility of the new scalars' couplings accounting for the tentative hint of Higgs flavor-violating decay h → µτ recently detected in the CMS experiment. They are allowed by constraints from other Higgs data to produce a rate of this decay roughly compatible with the CMS finding.

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Section: Jhep04(2015)174mentioning

confidence: 53%

Lepton-flavored scalar dark matter with minimal flavor violation

Lee

Tandean

2015

J. High Energ. Phys.

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“…Our limits could also be applied to the case of fermionic/scalar DM coupled to a light U(1) gauge boson mediator (referred to as U or Z ) [17,18] with the caveat that the coupling of such a mediator to neutrinos is constrained by neutrino elastic scattering experiments [58,59].…”

Section: Discussionmentioning

confidence: 99%

Constraining dark matter-neutrino interactions using the CMB and large-scale structure

Wilkinson

Bœhm

Lesgourgues

2014

J. Cosmol. Astropart. Phys.

165

213

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We present a new study on the elastic scattering cross section of dark matter (DM) and neutrinos using the latest cosmological data from Planck and large-scale structure experiments. We find that the strongest constraints are set by the Lyman-α forest, giving σ DM−ν 10 −33 (m DM /GeV) cm 2 if the cross section is constant and a present-day value of σ DM−ν 10 −45 (m DM /GeV) cm 2 if it scales as the temperature squared. These are the most robust limits on DM-neutrino interactions to date, demonstrating that one can use the distribution of matter in the Universe to probe dark ("invisible") interactions. Additionally, we show that scenarios involving thermal MeV DM and a constant elastic scattering cross section naturally predict (i) a cut-off in the matter power spectrum at the Lyman-α scale, (ii) N eff ∼ 3.5 ± 0.4, (iii) H 0 ∼ 71 ± 3 km s −1 Mpc −1 and (iv) the possible generation of neutrino masses.

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“…From a collection of these data [8] tabulated in Ref. [29], one can see that the experimental and SM values of the cross section agree with each other at the one-sigma level, except for several of them.…”

Section: Scotogenic Effects In Higgs Decay and E + E − Collisionsmentioning

confidence: 65%

“…Consequently, we need to turn to the ILC in order to explore the possibility of seeing the desired signals. After appropriate cuts on the photon energy and angle are imposed, the main background is e + e − → γνν in the SM which can be calculated with formulas available in the literature [29,32]. Among the examples in Table II, we obtain a few that produce contributions to e + e − → γ / E which are not negligible compared to the background at ILC energies.…”

Section: Scotogenic Effects In Higgs Decay and E + E − Collisionsmentioning

confidence: 99%

Probing scotogenic effects ine+e−colliders

Tandean

2014

Phys. Rev. D

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We explore the possibility of employing e + e − colliders to probe the scotogenic model, in which neutrinos get mass radiatively via one-loop interactions involving dark matter. Assuming the lightest one of the new particles in the model to be fermionic cold dark matter and taking into account various constraints, including those from LHC Higgs experiments, we show that LEP II data on e + e − scattering into a pair of charged leptons plus missing energy can place significant extra restrictions on the parameter space containing sufficiently low masses of the charged scalars in the model. On the other hand, LEP II data on e + e − collisions into a photon plus missing energy do not yield strong constraints. The allowed parameter space can still accommodate Higgs exotic decays into the nonstandard particles and thus is testable at the LHC. We also consider using future measurements of these two types of e + e − scattering at the International Linear Collider to examine the scenario of interest further and find that they can provide complementary information about it, whether or not they reveal scotogenic effects.

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Constraining nonstandard neutrino-electron interactions due to a new light spin-1 boson

Cited by 9 publications

References 71 publications

Lepton-flavored scalar dark matter with minimal flavor violation

Lepton-flavored scalar dark matter with minimal flavor violation

Constraining dark matter-neutrino interactions using the CMB and large-scale structure

Probing scotogenic effects ine+e−colliders

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