Lepton-nucleus cross section measurements for DUNE with the LDMX detector

Ankowski, Artur M. (ORCID:0000000340738686); Friedland, Alexander (ORCID:0000000250474680); Li, Shirley Weishi (ORCID:0000000221578982); Moreno, Omar (ORCID:0000000168093109); Schuster, Philip (ORCID:0000000269598974); Toro, Natalia (ORCID:0000000281503990); Tran, Nhan (ORCID:0000000284406854)

doi:10.1103/physrevd.101.053004

DOE OSTI · 1607608

Lepton-nucleus cross section measurements for DUNE with the LDMX detector

Ankowski, Artur M. (ORCID:0000000340738686)·Friedland, Alexander (ORCID:0000000250474680)·Li, Shirley Weishi (ORCID:0000000221578982)·Moreno, Omar (ORCID:0000000168093109)·Schuster, Philip (ORCID:0000000269598974)·Toro, Natalia (ORCID:0000000281503990)·Tran, Nhan (ORCID:0000000284406854)

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Abstract

We point out that the LDMX (Light Dark Matter eXperiment) detector design, conceived to search for sub-GeV dark matter, will also have very advantageous characteristics to pursue electron-nucleus scattering measurements of direct relevance to the neutrino program at DUNE and elsewhere. These characteristics include a 4-GeV electron beam, a precision tracker, electromagnetic and hadronic calorimeters with near 2 π azimuthal acceptance from the forward beam axis out to ~ 40 ° angle, and low reconstruction energy threshold. LDMX thus could provide (semi)exclusive cross section measurements, with detailed information about final-state electrons, pions, protons, and neutrons. We compare the predictions of two widely used neutrino generators ( genie , g i buu ) in the LDMX region of acceptance to illustrate the large modeling discrepancies in electron-nucleus interactions at DUNE-like kinematics. We argue that discriminating between these predictions is well within the capabilities of the LDMX detector.

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Ankowski, Artur M. (ORCID:0000000340738686), Friedland, Alexander (ORCID:0000000250474680), Li, Shirley Weishi (ORCID:0000000221578982), Moreno, Omar (ORCID:0000000168093109), Schuster, Philip (ORCID:0000000269598974), Toro, Natalia (ORCID:0000000281503990), Tran, Nhan (ORCID:0000000284406854). 2020-03-30. Lepton-nucleus cross section measurements for DUNE with the LDMX detector. https://doi.org/10.1103/physrevd.101.053004

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