PandaX-III: Searching for Neutrinoless Double Beta Decay with High Pressure Gaseous Time Projection Chambers

Han, K.

doi:10.1088/1742-6596/1342/1/012095

Cited by 11 publications

(11 citation statements)

References 7 publications

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“…MOON, which is an extension of ELEGANT V, aims at a ton-scale DBD experiment with 100 Mo by using super-modules of multi-layer scintillators and tracking chambers [159,716]. NEXT plans to use a high pressure Xe-gas TPC to study 136 Xe [717] and PandaX-III also for 136 Xe DBD [718].…”

Section: Neutrinoless Double-beta-decay Experimentsmentioning

confidence: 99%

Neutrino–nuclear responses for astro-neutrinos, single beta decays and double beta decays

2019

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Neutrino-nuclear responses associated with astro-neutrinos, single beta decays and double beta decays are crucial in studies of neutrino properties of interest for astro-particle physics. The present report reviews briefly recent studies of the neutrino-nuclear responses from both experimental and theoretical points of view in order to obtain a consistent understanding of the many facets of the neutrino-nuclear responses. Subjects discussed in this review include (i) experimental studies of neutrino-nuclear responses by means of single beta decays, charge-exchange nuclear reactions, muon-photon-and neutrino-nuclear reactions, and nucleon-transfer reactions, (ii) implications of and discussions on neutrino-nuclear responses for single beta decays, for astroneutrinos, and for astro-neutrino nucleosynthesis, (iii) theoretical aspects of neutrino-nuclear responses for beta and double beta decays, for nuclear muon capture and for neutrino-nucleus scattering, and (iv) critical discussions on nucleonic and non-nucleonic spin-isospin correlations and renormalization (quenching or enhancement) effects on the axial weak coupling. Remarks are given on perspectives of experimental and theoretical studies of the neutrino-nuclear responses and on future experiments of double beta decays.

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Section: Neutrinoless Double-beta-decay Experimentsmentioning

confidence: 99%

Neutrino–nuclear responses for astro-neutrinos, single beta decays and double beta decays

2019

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“…Such scenarios involving sterile neutrinos can affect neutrinoless double beta decay (0νββ) experiments, which are excellent probes of lepton number violation (LNV). Current experimental limits on 0νββ half lives are at the level of 10 26 years and next-generation ton-scale experiments aim for one or two order-of-magnitude improvements [28][29][30][31][32][33][34][35][36][37].…”

Section: Introductionmentioning

confidence: 99%

Sterile neutrinos and neutrinoless double beta decay in effective field theory

Dekens

Vries

Fuyuto

et al. 2020

J. High Energ. Phys.

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We investigate neutrinoless double beta decay (0νββ) in the presence of sterile neutrinos with Majorana mass terms. These gauge-singlet fields are allowed to interact with Standard-Model (SM) fields via renormalizable Yukawa couplings as well as higherdimensional gauge-invariant operators up to dimension seven in the Standard Model Effective Field Theory extended with sterile neutrinos. At the GeV scale, we use Chiral effective field theory involving sterile neutrinos to connect the operators at the level of quarks and gluons to hadronic interactions involving pions and nucleons. This allows us to derive an expression for 0νββ rates for various isotopes in terms of phase-space factors, hadronic low-energy constants, nuclear matrix elements, the neutrino masses, and the Wilson coefficients of higher-dimensional operators. The required hadronic low-energy constants and nuclear matrix elements depend on the neutrino masses, for which we obtain interpolation formulae grounded in QCD and chiral perturbation theory that improve existing formulae that are only valid in a small regime of neutrino masses. The resulting framework can be used directly to assess the impact of 0νββ experiments on scenarios with light sterile neutrinos and should prove useful in global analyses of sterile-neutrino searches. We perform several phenomenological studies of 0νββ in the presence of sterile neutrinos with and without higher-dimensional operators. We find that non-standard interactions involving sterile neutrinos have a dramatic impact on 0νββ phenomenology, and next-generation experiments can probe such interactions up to scales of O(100) TeV.

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“…Such decays can probe physics beyond the electroweak scale and expose a source of leptonnumber (L) violation which may explain the observed matter-antimatter asymmetry in the universe [3,4]. Existing and planned experiments will constrain this novel nuclear decay [5][6][7][8][9][10][11][12][13][14][15][16], but the interpretation of the resulting decay rates or limits as constraints on new physics poses a tremendous theoretical challenge.The most widely discussed mechanism for 0νββ is that of a light Majorana neutrino, which can propagate a long distance within a nucleus. However, if the mechanism involves a heavy scale, Λ ββ , the resulting L-violating process can be short-ranged.…”

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confidence: 99%

Heavy Physics Contributions to Neutrinoless Double Beta Decay from QCD

et al. 2018

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Observation of neutrinoless double beta decay, a lepton number violating process that has been proposed to clarify the nature of neutrino masses, has spawned an enormous world-wide experimental effort. Relating nuclear decay rates to high-energy, beyond the Standard Model (BSM) physics requires detailed knowledge of non-perturbative QCD effects. Using lattice QCD, we compute the necessary matrix elements of short-range operators, which arise due to heavy BSM mediators, that contribute to this decay via the leading order π − → π + exchange diagrams. Utilizing our result and taking advantage of effective field theory methods will allow for model-independent calculations of the relevant two-nucleon decay, which may then be used as input for nuclear many-body calculations of the relevant experimental decays. Contributions from short-range operators may prove to be equally important to, or even more important than, those from long-range Majorana neutrino exchange.Introduction.-Neutrinoless double beta decay (0νββ) is a process that, if observed, would reveal violations of symmetries fundamental to the Standard Model, and would guarantee that neutrinos have nonzero Majorana mass [1, 2]. Such decays can probe physics beyond the electroweak scale and expose a source of leptonnumber (L) violation which may explain the observed matter-antimatter asymmetry in the universe [3,4]. Existing and planned experiments will constrain this novel nuclear decay [5][6][7][8][9][10][11][12][13][14][15][16], but the interpretation of the resulting decay rates or limits as constraints on new physics poses a tremendous theoretical challenge.The most widely discussed mechanism for 0νββ is that of a light Majorana neutrino, which can propagate a long distance within a nucleus. However, if the mechanism involves a heavy scale, Λ ββ , the resulting L-violating process can be short-ranged. While naïvely short-range operators are suppressed compared to long-range interactions due to the heavy mediator propagator, in the case of 0νββ, the long-range interaction requires a helicity flip and is proportional to the mass of the light neutrino. In a standard seesaw scenario [17][18][19][20][21], this light neutrino mass is similarly suppressed by the same large mass scale, so the relative importance of long-versus short-range contributions is dependent upon the particle physics model under consideration and in general cannot be determined until the nuclear matrix elements for both types of processes are computed.Both long-and short-range mechanisms present substantial theoretical challenges if we hope to connect high energy physics with experimentally observed decay rates. The former case is difficult because one must understand long-distance nuclear correlations. In the latter case the short-distance physics is masked by QCD effects, requiring non-perturbative methods to match few-nucleon matrix elements to Standard Model operators.Effective field theory (EFT) arguments show that at leading order (LO) in the Standard Model, there are nine local four-...

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PandaX-III: Searching for Neutrinoless Double Beta Decay with High Pressure Gaseous Time Projection Chambers

Cited by 11 publications

References 7 publications

Neutrino–nuclear responses for astro-neutrinos, single beta decays and double beta decays

Neutrino–nuclear responses for astro-neutrinos, single beta decays and double beta decays

Sterile neutrinos and neutrinoless double beta decay in effective field theory

Heavy Physics Contributions to Neutrinoless Double Beta Decay from QCD

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