Mass limits on a light Higgs boson from π-, K-, η′ -meson decays in the 70 GeV proton beam-dump experiment

Barabash, L.S.; Baranov, S.A.; Batusov, Yu.A.; Bunyatov, S.A.; Karev, A.; Kazarinov, M. Y.; Klimov, O.; Kuznetsov, O.; Ladygin, E.; Lyukov, V.V.; Nefedov, Y.; Popov, Б.; Prakhov, S.; Snyatkov, V.I.; Valuev, V.; Борисов, А. А.; Bozhko, N. I.; Chernichenko, S.; Chukin, G.L.; Goryachev, V. N.; Kirsanov, M.; Кожин, А. С.; Kravtsov, V. I.; Kulikov, A.; Mukhin, A.I.; Rychenkov, V.N.; Salomatin, Y.; Shestermanov, K. E.; Sytnik, V.; Tumakov, V.A.; Zudin, Yu.A.; Kiss, D.; Jaki, Z.; Blümlein, J.; Brünner, J.; Grabosch, H. J.; Lanius, P.; Nowak, S.; Rethfeldt, C.; Ryseck, H. E.; Walter, Michael

doi:10.1016/0370-2693(92)90105-d

Cited by 10 publications

(10 citation statements)

References 23 publications

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“…The mass range of the produced γ is limited by m γ < m π 0 = 134.976 MeV [15]. In principle this range may be expanded to higher meson decay thresholds including η, ρ ± , ω, and η production, since the decay spectra of these particles contain a large fraction of photons, see also [10,18]. However, one has to know the corresponding differential meson production spectra for p A scattering in detail, which to our knowledge have not been measured in the energy region under consideration.…”

Section: The Production Processmentioning

confidence: 99%

New exclusion limits for dark gauge forces from beam-dump data

2011

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We re-analyze published proton beam dump data taken at the U70 accelerator at IHEP Serpukhov with the ν-calorimeter I experiment in 1989 to set mass-coupling limits for dark gauge forces. The corresponding data have been used for axion and light Higgs particle searches in Blümlein et al. (1991Blümlein et al. ( , 1992 [1,2] before. We determine new mass and coupling exclusion bounds for dark gauge bosons.

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Section: The Production Processmentioning

confidence: 99%

New exclusion limits for dark gauge forces from beam-dump data

2011

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“…Along with our SBN projections, Fig. 2 displays the existing constraints from DELPHI [111,112], CHARM [53,[78][79][80], NuCal [53,81,82], and BaBar [54,86,87], as discussed in Section II C. We have additionally derived a reinterpretation of the CHARM result including in particular the parton-level production not considered in [53,79], significantly extending the reach to the larger mass range. Along with these existing constraints, there are several ongoing/proposed experiments which can probe the iDM model.…”

Section: A Large Mass Splitting Regionmentioning

confidence: 98%

“…b. NuCal Using the 70 GeV proton beam from the U70 accelerator, NuCal accumulated 2 • 10 18 protons on target (PoT) [81,82]. Similarly to CHARM, it featured a large decay volume and could therefore operate in a near-zero background mode.…”

Section: Existing Constraintsmentioning

confidence: 99%

Inelastic Dark Matter at the Fermilab Short Baseline Neutrino Program

Batell,

Berger,

Darmé

et al. 2021

Preprint

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We study the sensitivity of the Fermilab Short-Baseline Neutrino (SBN) experiments, Micro-BooNE, ICARUS, and SBND, to MeV-to GeV-scale inelastic dark matter interacting through a dark photon mediator. These models provide interesting scenarios of light thermal dark matter, which, while challenging to probe with direct and indirect detection experiments, are amenable to accelerator-based searches. We consider production of the dark sector states with both the Fermilab Booster 8 GeV and NuMI 120 GeV proton beams and study the signatures of scattering and decay of the heavy excited dark state in the SBN detectors. These distinct signatures probe complementary regions of parameter space. All three experiments will be able to cover new ground, with an excellent near-term opportunity to search for cosmologically motivated targets explaining the observed dark matter abundance.

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“…The number of events detected were consistent with background expectations. For low mass range of the dark photon: 1 < m A < 300 MeV/c 2 , part of the space, coupling strength to Standard Model fermions versus dark photon mass, have been excluded by Beam dump experiments ( [28][29][30][31][32][33][34]) by looking at reaction pp → AX for example.…”

Section: Introductionmentioning

confidence: 99%