Probing the Higgs portal at the Fermilab short-baseline neutrino experiments

Batell, Brian; Berger, Joshua; Ismail, Ahmed

doi:10.1103/physrevd.100.115039

Cited by 52 publications

(47 citation statements)

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“…Similarly, KOTO provides sensitivity through the neutral decay channel K L → π 0 νν (see, e.g., the recent discussions of an anomaly in current data in [56][57][58][59][60]). The short baseline neutrino program at Fermilab will also provide new sensitivity to the Higgs portal, as recently analyzed in [55], and we exhibit the projected sensitivity for SBND and ICARUS from that reference in Fig. 1.…”

Section: Discussionmentioning

confidence: 94%

“…Exclusions from other sources (in gray) including LHCb [47], E949 K → π þ invisible [44][45][46], and CHARM S → e þ e − ; μ þ μ − [43][44][45] are shown. The 1σ and 2σ preferred contours to explain the KOTO anomaly in K L decays [56][57][58][59], and the sensitivity projections for the on-axis SBND (orange) and off-axis ICARUS (purple) experiments at Fermilab [55], are also shown for comparison (see the text for further details).…”

Section: Light Scalar Production At Lsndmentioning

confidence: 99%

“…Our final results are presented in Fig. 1, where we show LSND exclusions compared to existing limits, e.g., from CHARM and E949, and recent projections for sensitivity at the Fermilab SBN facility [55]. For comparison, we also show the 1σ and 2σ preferred regions if decays of K L via S were to explain the recent KOTO anomaly [56][57][58][59][60].…”

Section: Introductionmentioning

confidence: 98%

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LSND constraints on the Higgs portal

Foroughi-Abari

Ritz

2020

Phys. Rev. D

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High-luminosity fixed target experiments provide impressive sensitivity to new light weakly coupled degrees of freedom. We revisit the minimal case of a scalar singlet S coupled to the Standard Model through the Higgs portal that decays visibly to leptons for scalar masses below the dipion threshold. The dataset from the LSND experiment is found to impose the leading constraints within two mass windows between m S ∼ 100 and 350 MeV. In the process, we analyze a number of scalar production channels in the target, finding that proton bremsstrahlung provides the dominant channel at LSND beam energies.

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Section: Discussionmentioning

confidence: 94%

Section: Light Scalar Production At Lsndmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

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LSND constraints on the Higgs portal

Foroughi-Abari

Ritz

2020

Phys. Rev. D

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“…Beyond DUNE's nominal mission to perform precision measurements of neutrino properties and neutrino oscillations, both its near and far detectors will serve as powerful probes of new physics. Recently, interest in using neutrino detectors to search for new physics has grown, with proposals to search for dark matter/dark sectors [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21], millicharged particles [22][23][24], and exotic interactions among the Standard Model (SM) neutrinos [25][26][27][28][29], to name a few (see Ref. [30] for a more thorough summary of beyond-the-Standard-Model searches in neutrino experiments).…”

Section: Section 1: Introductionmentioning

confidence: 99%

Searches for decays of new particles in the DUNE Multi-Purpose near Detector

Berryman

Gouvêa

Fox

et al. 2020

J. High Energ. Phys.

101

166

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One proposed component of the upcoming Deep Underground Neutrino Experiment (DUNE) near detector complex is a multi-purpose, magnetized, gaseous argon time projection chamber: the Multi-Purpose Detector (MPD). We explore the new-physics potential of the MPD, focusing on scenarios in which the MPD is significantly more sensitive to new physics than a liquid argon detector, specifically searches for semi-long-lived particles that are produced in/near the beam target and decay in the MPD. The specific physics possibilities studied are searches for dark vector bosons mixing kinetically with the Standard Model hypercharge group, leptophilic vector bosons, dark scalars mixing with the Standard Model Higgs boson, and heavy neutral leptons that mix with the Standard Model neutrinos. We demonstrate that the MPD can extend existing bounds in most of these scenarios. We illustrate how the ability of the MPD to measure the momentum and charge of the final state particles leads to these bounds. arXiv:1912.07622v1 [hep-ph] 16 Dec 2019 Liquid Argon Near Detector: The liquid argon near detector has a width (transverse to the beam direction) of 7 m, a height of 3 m, and a length (in the beam direction) of 5 m. The fiducial mass of the near detector is 50 t of argon. See Ref. [2] for more detail.Multi-Purpose Detector: The Multi-Purpose Detector (MPD) is a magnetic spectrometer with a cylindrical high-pressure gaseous argon time projection chamber (HPTPC) at its heart. The HPTPC has a diameter of 5 m and a length of 5 m. It is surrounded by an electromagnetic calorimeter (ECAL) and the HPTPC+ECAL system is situated inside a magnet with 0.5 T central field. The axis of the cylinder is perpendicular to the beam direction. However, for simplicity, when simulating our signals (see Section 3), * Some projections of DUNE operation include the possibility of an upgraded beam (roughly twice the number of protons on target per year) that can operate in the second half of the experiment. We assume a constant number of protons on target per year, so our ten-year projection is equivalent to a shorter operation time with such an upgraded beam. † This is in contrast with the LArTPC, where the conversion distance of photons is O(10 cm). Far more photons can fake the signal of e + e − in the LArTPC than in the HPTPC. * Ref. [63] provides a thorough review of searches for dark photons and existing constraints. * The results of this analysis in antineutrino mode are qualitatively equivalent.

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“…The larger fraction of literature studied elastic scattering of relativistically produced dark matter, e.g., refs. [17][18][19][20][21], but the energetic nature of such dark matter essentially allows decent cross section for its "up"-scattering to an excited (or equivalently heavier unstable) state, under the framework of inelastic dark matter. Reference [22] pointed out the potential of detecting both the primary recoil induced by such relativistic dark matter and visible decay product(s) of the excited state and showed that it allows relevant signal searches to suffer from significantly less background contamination, hence inducing recent development in phenomenological investigations [23,24].…”

Section: Jhep07(2020)057mentioning

confidence: 99%

Optimizing energetic light dark matter searches in dark matter and neutrino experiments

Kim

Machado

Park

et al. 2020

J. High Energ. Phys.

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Neutrino and dark matter experiments with large-volume (1 ton) detectors can provide excellent sensitivity to signals induced by energetic light dark matter coming from the present universe. Taking boosted dark matter as a concrete example of energetic light dark matter, we scrutinize two representative search channels, electron scattering and proton scattering including deep inelastic scattering processes, in the context of elastic and inelastic boosted dark matter, in a completely detector-independent manner. In this work, a dark gauge boson is adopted as the particle to mediate the interactions between the Standard Model particles and boosted dark matter. We find that the signal sensitivity of the two channels highly depends on the (mass-)parameter region to probe, so search strategies and channels should be designed sensibly especially at the earlier stage of experiments. In particular, the contribution from the boosted-dark-matter-initiated deep inelastic scattering can be subleading (important) compared to the quasi-elastic proton scattering, if the mass of the mediator is below (above) O(GeV). We demonstrate how to practically perform searches and relevant analyses, employing example detectors such as DarkSide-20k, DUNE, Hyper-Kamiokande, and DeepCore, with their respective detector specifications taken into consideration. For other potential detectors we provide a summary table, collecting relevant information, from which similar studies can be fulfilled readily.

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Probing the Higgs portal at the Fermilab short-baseline neutrino experiments

Cited by 52 publications

References 100 publications

LSND constraints on the Higgs portal

LSND constraints on the Higgs portal

Searches for decays of new particles in the DUNE Multi-Purpose near Detector

Optimizing energetic light dark matter searches in dark matter and neutrino experiments

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