Search for an Excess of Electron Neutrino Interactions in MicroBooNE Using Multiple Final-State Topologies

Abratenko, P.; An, R.; Anthony, J.; Arellano, Luis Ervin Prado; Asaadi, J.; Ashkenazi, A.; Balasubramanian, S.; Baller, B.; Barnes, C.; Barr, G.; Basque, V.; Bathe-Peters, L.; Rodrigues, O. Benevides; Berkman, S.; Bhanderi, A.; Bhat, A.; Bishai, M.; Blake, A.; Bolton, T.; Book, Julia; Camilleri, L.; Caratelli, D.; Terrazas, I. Caro; Cavanna, F.; Cerati, G. B.; Chen, Y.; Cianci, D.; Collin, Gabriel; Conrad, J. M.; Convery, M. R.; Cooper-Troendle, L.; Crespo-Anadón, J. I.; Tutto, M. Del; Dennis, S. R.; Detje, P.; Devitt, Ann; Diurba, R.; Dorrill, R.; Duffy, K.; Dytman, S.; Eberly, B.; Ereditato, A.; Sanchez, L. Escudero; Evans, Justin J.; Fine, R.; Aguirre, G. A. Fiorentini; Fitzpatrick, R. S.; Fleming, B. T.; Foppiani, N.; Franco, D.; Furmanski, A. P.; García-Gámez, D.; Gardiner, S.; Ge, G.; Genty, V.; Gollapinni, S.; Goodwin, O.; Gramellini, E.; Green, P.; Greenlee, H.; Gu, W.; Guénette, R.; Guzowski, P.; Hagaman, L.; Hen, O.; Hilgenberg, C.; Horton-Smith, G. A.; Hourlier, A.; Itay, R.; James, C.; Ji, X.; Jiang, L.; Jo, J. H.; Johnson, R. A.; Jwa, Y.-J.; Kaleko, D.; Kalra, D.; Kamp, N.; Kaneshige, N.; Karagiorgi, G.; Ketchum, W.; Kirby, M.; Kobilarcik, T.; Kreslo, I.; LaZur, R.; Lepetic, I.; Li, K.; Li, Y.; Lin, K.; Lister, A.; Littlejohn, B. R.; Louis, W. C.; Luo, X.; Manivannan, K.; Mariani, C.; Marsden, D.; Marshall, J.; Caicedo, D. A. Martínez; Mason, K.; Mastbaum, A.; McConkey, N.; Meddage, V.; Mettler, T.; Miller, K.; Mills, J.; Mistry, K.; Mogan, A.; Mohayai, T.; Moon, J.; Mooney, M.; Moor, A. F.; Moore, C. D.; Lepin, L. Mora; Mousseau, J.; Murphy, M.; Naples, D.; Navrer-Agasson, A.; Nebot-Guinot, M.; Neely, R. K.; Newmark, D. A.; Nowak, J.; Nunes, M. Soares; Palamara, O.; Paolone, V.; Papadopoulou, A.; Papavassiliou, V.; Pate, S. F.; Patel, N. D.; Paudel, A.; Pavlović, Ž.; Piasetzky, E.; Ponce-Pinto, I. D.; Prince, S.; Qian, X.; Raaf, J. L.; Radeka, V.; Rafique, A.; Reggiani-Guzzo, M.; Ren, Lu; Rice, L. C. J.; Rochester, Lynn; Rondon, J. Rodriguez; Rosenberg, M.; Ross-Lonergan, M.; Russell, B.; Scanavini, G.; Schmitz, D.; Schukraft, A.; Seligman, W.; Shaevitz, M. H.; Sharankova, R.; Shi, J. Y.; Sinclair, J.; Smith, A.; Snider, E. L.; Soderberg, M.; Söldner-Rembold, S.; Soleti, S. R.; Spentzouris, P.; Spitz, J.; Stancari, M.; John, J. St.; Strauss, T.; Sutton, K.; Sword-Fehlberg, S.; Szelc, A. M.; Tang, W.; Terao, K.; Thomson, M. A.; Thorpe, C.; Totani, D.; Toups, M.; Tsai, Y.-T.; Uchida, M. A.; Usher, T.; Pontseele, W. Van De; Viren, B.; Weber, M.; Wei, H.; Williams, Z.; Wolbers, S.; Wongjirad, T.; Wospakrik, M.; Wresilo, K.; Wright, N.; Wu, W.; Yandel, E.; Yang, T.; Yarbrough, G.; Yates, L. E.; Yu, H. W.; Zeller, G. P.; Zennamo, J.; Zhang, C.

doi:10.1103/physrevlett.128.241801

Cited by 58 publications

(33 citation statements)

References 67 publications

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“…Very recently, the MicroBooNE experiment [12], designed specifically to be sensitive to differences between the various signal possibilities mentioned above and help pin down the origin of these anomalies, announced its first set of results [11,[13][14][15][16], which seem to offer further support for the presence of new physics. A major goal of the experiment is to search for an LEE signal in ν e charged-current (CC) interactions with an electron in the final state (the eLEE search) as well as in neutral-current (NC) interactions with a single photon in the final state.…”

Section: Jhep06(2022)160mentioning

confidence: 99%

“…• As mentioned above, via three searches for ν e scattering leading to the production of electrons [13][14][15][16], each with a different final state, MicroBooNE excluded an electron final state parametrisation of the MB excess (the eLEE model) at a confidence level > 97%. By doing so it disfavoured (but did not eliminate) the possibility that the excess originated in sterile-active neutrino oscillations and strengthened the possibility that the excess could be due to boosted e + e − pairs, which, not having a known SM background, points to new physics.…”

Section: Jhep06(2022)160mentioning

confidence: 99%

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Requirements on common solutions to the LSND and MiniBooNE excesses: a post-MicroBooNE study

Abdallah

Gandhi²,

Roy³

2022

J. High Energ. Phys.

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The strong statistical significance of an observed electron-like event excess in the MiniBooNE (MB) experiment, along with an earlier similar excess seen in the Liquid Scintillator Neutrino Detector (LSND), when interpreted in conjunction with recent MicroBooNE results may have brought us to the cusp of new physics discoveries. This has led to many attempts to understand these observations, both for each experiment individually and in conjunction, via physics beyond the Standard Model (SM). We provide an overview of the current situation, and discuss three major categories under which the many proposals for new physics fall. The possibility that the same new, non-oscillation physics explains both anomalies leads to new restrictions and requirements. An important class of such common solutions, which we focus on in this work, consists of a heavy 𝒪(MeV−sub-GeV) sterile neutral fermion produced in the detectors, (via up-scattering of the incoming muon neutrinos), and subsequently decaying to photons or e+e− pairs which mimic the observed signals. Such solutions are subject to strong demands from a) cross section requirements which would yield a sufficient number of total events in both LSND and MB, b) requirements imposed by the measured energy and angular distributions in both experiments and finally, c) consistency and compatibility of the new physics model and its particle content with other bounds from a diverse swathe of particle physics experiments. We find that these criteria often pull proposed solutions in different directions, and stringently limit the viable set of proposals which could resolve both anomalies. Our conclusions are relevant for both the general search for new physics and for the ongoing observations and analyses of the MicroBooNE experiment.

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Section: Jhep06(2022)160mentioning

confidence: 99%

Section: Jhep06(2022)160mentioning

confidence: 99%

Requirements on common solutions to the LSND and MiniBooNE excesses: a post-MicroBooNE study

Abdallah

Gandhi²,

Roy³

2022

J. High Energ. Phys.

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“…At this point it is incumbent on us to comment on the recent ν e searches by the MicroBooNE experiment based on data obtained from an exposure of 7 × 10 20 protonson-target (POT) from the Booster Neutrino Beam (BNB) [61]. These analyses appear to strongly disfavor the hypothesis that the MiniBooNE low energy excess is due to ν e scattering events.…”

Section: Introductionmentioning

confidence: 99%

Quasi-sterile neutrinos from dark sectors. Part I. BSM matter effects in neutrino oscillations and the short-baseline anomalies.

Alves

Louis

deNiverville

2022

J. High Energ. Phys.

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Quasi-sterile neutrinos are a natural consequence of dark sectors interacting with the Standard Model (SM) sector via neutrino- and vector-portals. Essentially, quasi-sterile neutrinos are light dark sector fermions with two generic properties: (i) they mix with the active neutrinos of the SM, and (ii) they are charged under a vector mediator that couples feebly to SM matter. Various interesting phenomenological consequences result from this class of particles. In this article, we investigate one such consequence: new, beyond the SM matter effects that can alter in-medium neutrino oscillations. In particular, for special windows of energy and matter densities, active neutrinos can resonantly oscillate into sterile neutrinos. We take advantage of this feature to build a quasi-sterile neutrino model that can explain the MiniBooNE and LSND anomalies, while remaining compatible with observations from long-baseline reactor- and accelerator-based neutrino experiments. This model is also likely compatible with the recent results reported by the MicroBooNE collaboration (albeit we cannot precisely quantify this claim due to a lack of information in MicroBooNE’s public data releases to date). Implications for solar neutrinos and νe disappearance searches are also briefly discussed.

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“…Credit: MicroBooNE could be incompatible with our understanding of the oscillation of the three known neutrino flavors [1]. The MicroBooNE Collaboration has now further explored this exciting possibility [2][3][4][5][6]. They find no such anomalous signal, but they can't yet rule out the possiblilty that new neutrinos might be out there.…”

mentioning

confidence: 99%

“…But the MiniBooNE detector picked up a ν e -like signal that suggests exactly that switch (see Viewpoint: The Plot Thickens for the Fourth Neutrino). The MicroBooNE Collaboration has now performed three analyses of their data to try to determine the nature of the signal MiniBooNE detected [2][3][4][5].…”

mentioning

confidence: 99%

Neutrino Mystery Endures

Worcester

2022

Physics

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Search for an Excess of Electron Neutrino Interactions in MicroBooNE Using Multiple Final-State Topologies

Cited by 58 publications

References 67 publications

Requirements on common solutions to the LSND and MiniBooNE excesses: a post-MicroBooNE study

Requirements on common solutions to the LSND and MiniBooNE excesses: a post-MicroBooNE study

Quasi-sterile neutrinos from dark sectors. Part I. BSM matter effects in neutrino oscillations and the short-baseline anomalies.

Neutrino Mystery Endures

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