Fri·Feb 23, 2024Friday·February 23, 2024

1. 01*

   Constraints on new physics with (anti)neutrino-nucleon scattering data

   Oleksandr Tomalak🇺🇸 · Minerba Betancourt🇺🇸 · Kaushik Borah🇺🇸 · Richard J. Hill🇺🇸 · Thomas Junk🇺🇸

   New physics contributions to the (anti)neutrino-nucleon elastic scattering process can be constrained by precision measurements, with controlled Standard Model uncertainties. In a large class of new physics models, interactions involving charged leptons of different flavor can be related, and the large muon flavor component of accelerator neutrino beams can mitigate the lepton mass suppression that occurs in other low-energy measurements. We employ the recent high-statistics measurement of the cross section for ${\bar{\nu }}_{\mu }p\to {\mu }^{+}n$ scattering on the hydrogen atom by MINERvA to place new confidence intervals on tensor and scalar neutrino-nucleon interactions: $\mathfrak{Re}{C}_T=-1_{-13}^{+14}\times 10^{-4}$, $|\mathfrak{Im}{C}_T|\le 1.3\times 10^{-3}$, and $|\mathfrak{Im}{C}_S|=45_{-19}^{+13}\times 10^{-3}$. These results represent a reduction in uncertainty by a factor of $2.1$, $3.1$, and $1.2$, respectively, compared to existing constraints from precision beta decay.

   ↳ hep-phhep-exnucl-exnucl-thPLB(2024)·7 citations
2. 02*

   Adiabatic Light Guide with S-shaped Strips

   B. Wojtsekhowski🇺🇸 · E.J. Brash🇺🇸 · G.B. Franklin🇺🇸 · A. Rosso · A. Sarty🇨🇦 · A. Shahinyan🇦🇲 · E. Zimmerman🇺🇸

   A light guide is an essential part of many scintillator counters and light collection systems. Our main interest is a light guide for a thin wide scintillator which has high light transmission while converting the area of the light source to the shape of a photo-detector. We propose a variation of the light guide which avoids a 90${}^{\mathrm{o}}$ twist of the strips, reduces the length of the light pipe, and reduces the complexity of production. Detailed Monte Carlo simulation studies have been performed for a 3-strip S-shaped light-guide system.

   ↳ physics.ins-detnucl-exphysics.app-phRev.Sci.Instrum.(2024)·1 citation
3. 03*

   Radiative Corrections in Super Rosenbluth Experiments

   Quinn Stefan🇺🇸 · Axel Schmidt🇺🇸

   Super Rosenbluth experiments, elastic electron-proton scattering experiments that eschew traditional electron detection and opt instead for the detection of the recoiling proton, have several experimental advantages. One claimed advantage is that radiative corrections are more favorable, i.e., smaller and with less kinematic dependence. In this paper, we explore this claim by conducting Monte Carlo simulations of both Super Rosenbluth and traditional Rosenbluth experiments with different models of radiative effects. When using a model that employs the peaking approximation, we indeed confirm the reduced kinematic dependence of the radiative corrections. However, we find that more sophisticated models that avoid the peaking approximation are unable to produce numerically stable results, due to a large enhancement to the cross section for bremsstrahlung radiation from the proton when the momentum transfer, $Q^2$, approaches zero. Since this enhancement is not modelled in the peaking approximation, a more robust approach to radiative corrections in Super Rosenbluth experiments is needed.

   ↳ hep-phnucl-exnucl-thEPJA(2024)·2 citations

* Reconstructed cohort: no mailing for this day survives in the archive. Papers are grouped by their submission times and arXiv's announcement cut-off, assuming announcement without delay; positions follow identifier order. Validated at ~91% exact-day agreement against the archived era.