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The weak mixing angle $\theta_W$ is a fundamental parameter in the electroweak theory with a value running according to the energy scale, and its precision measurement in the low-energy regime is still ongoing. We propose a method to…

High Energy Physics - Phenomenology · Physics 2025-11-10 Chun-Ming Yip , Xu-Run Huang , Ming-chung Chu , Qishan Liu

We review the status of precision measurements of weak neutral current interactions, mediated by the $Z^0$ boson, at $Q^2\ll M_Z^2$. They can be used to extract values for the weak mixing angle $\sin^2\theta_W$, a fundamental parameter of…

High Energy Physics - Experiment · Physics 2013-10-29 K. S. Kumar , Sonny Mantry , W. J. Marciano , P. A. Souder

The NuTeV experiment at Fermilab presents a determination of the electroweak mixing angle. High purity, large statistics samples of muon-neutrino and muon-antineutrino events allow the use of the Paschos-Wolfenstein relation. This…

We report a precise measurement of the weak mixing angle from the ratio of neutral current to charged current inclusive cross-sections in deep-inelastic neutrino-nucleon scattering. The data were gathered at the CCFR neutrino detector in…

High Energy Physics - Experiment · Physics 2009-09-25 C. G. Arroyo

The weak mixing angle is a probe of the vector-axial coupling structure of electroweak interactions. It has been measured precisely at the $Z$-pole by experiments at the LEP and SLD colliders, but its energy dependence above $M_Z$ remains…

High Energy Physics - Phenomenology · Physics 2023-07-28 Clara Lavinia Del Pio , Simone Amoroso , Mauro Chiesa , Ekaterina Lipka , Fulvio Piccinini , Federico Vazzoler , Alessandro Vicini

We study the possibility to measure sin^2 theta_W by neutrino-electron scattering at a value of the momentum transfer Q ~ 30 MeV with a precision of 0.24% which is only a factor three below the one obtained by LEP-I at the Z-pole. The…

High Energy Physics - Phenomenology · Physics 2011-08-29 Sanjib Kumar Agarwalla , Patrick Huber

Taking into account recent theoretical and experimental inputs on reactor fluxes we reconsider the determination of the weak mixing angle from low energy experiments. We perform a global analysis to all available neutrino-electron…

High Energy Physics - Phenomenology · Physics 2016-09-07 B. C. Canas , E. A. Garces , O. G. Miranda , M. Tortola , J. W. F. Valle

We propose a new precision measurement of parity-violating electron scattering on the proton at very low Q^2 and forward angles to challenge predictions of the Standard Model and search for new physics. A unique opportunity exists to carry…

New limits on the weak mixing angle and on the electron neutrino effective charge radius in the low energy regime, below 100 MeV, are obtained from a combined fit of all electron-(anti)neutrino electron elastic scattering measurements. We…

High Energy Physics - Phenomenology · Physics 2009-04-17 J. Barranco , O. G. Miranda , T. I. Rashba

The planned DUNE experiment will have excellent sensitivity to the vector and axial couplings of the electron to the $Z$-boson via precision measurements of neutrino--electron scattering. We investigate the sensitivity of DUNE-PRISM, a…

High Energy Physics - Phenomenology · Physics 2020-08-03 André de Gouvêa , Pedro A. N. Machado , Yuber F. Perez-Gonzalez , Zahra Tabrizi

After the first measurement of the coherent elastic neutrino nucleus scattering (CENNS) by the COHERENT Collaboration, it is expected that new experiments will confirm the observation. Such measurements will allow to put stronger…

High Energy Physics - Phenomenology · Physics 2018-08-01 B. C. Cañas , E. A. Garcés , O. G. Miranda , A. Parada

The weak mixing angle provides a sensitive test of the Standard Model. We study SBND's sensitivity to the weak mixing angle using neutrino-electron scattering events. We perform a detailed simulation, paying particular attention to…

High Energy Physics - Phenomenology · Physics 2024-09-12 Gustavo F. S. Alves , Antonio P. Ferreira , Shirley Weishi Li , Pedro A. N. Machado , Yuber F. Perez-Gonzalez

The weak mixing angle is a fundamental parameter of the electroweak theory of the standard model whose measurement in the low-energy regime is still not precisely determined. Different probes are sensitive to its value, among which atomic…

High Energy Physics - Phenomenology · Physics 2024-08-20 M. Atzori Corona , M. Cadeddu , N. Cargioli , F. Dordei , C. Giunti

A weighted average weak mixing angle theta_W derived from relatively low Q^2 experiments is compared with the Standard Model prediction obtained from precision measurements. The approximate 1.8 sigma discrepancy is fit with an intermediate…

High Energy Physics - Phenomenology · Physics 2015-09-09 Hooman Davoudiasl , Hye-Sung Lee , William J. Marciano

We present a measurement of the fundamental parameter of the standard model, the weak mixing angle, in $p\bar{p}\rightarrow Z/\gamma^{*}\rightarrow e^{+}e^{-}$ events at a center of mass energy of 1.96 TeV, using data corresponding to 9.7…

High Energy Physics - Experiment · Physics 2017-07-14 D0 Collaboration

Recently, two dark matter direct detection experiments have announced the first indications of nuclear recoils from solar $^8$B neutrinos via coherent elastic neutrino-nucleus scattering (CE$\nu$NS) with xenon nuclei. These results…

High Energy Physics - Phenomenology · Physics 2025-05-12 Valentina De Romeri , Dimitrios K. Papoulias , Christoph A. Ternes

Direct detection dark matter experiments have proven to be compelling probes for studying low-energy neutrino interactions with both nuclei and atomic electrons, offering complementary information to accelerator and reactor-based neutrino…

High Energy Physics - Phenomenology · Physics 2025-10-14 M. Atzori Corona , M. Cadeddu , N. Cargioli , F. Dordei , M. Sestu

The determination of the weak mixing angle, $\sin^2\theta_W$, at low momentum transfers remains a powerful test of the Standard Model and its potential new physics extensions. In this paper, we explore some physics opportunities at present…

High Energy Physics - Phenomenology · Physics 2026-02-26 Luis A. Delgadillo , Qishan Liu , Randhir Singh

A new precision measurement of the parity violating analyzing power in longitudinally polarized electron scattering from the proton at very low Q^2 at an incident energy of 1.16 GeV is in the final stages of preparation for execution at…

Nuclear Experiment · Physics 2008-11-26 Qweak Collaboration , Willem T. H. van Oers

The running weak mixing angle is used as a convenient tool to keep control of dominating logarithmic corrections in the Standard Model of the electroweak interactions connecting measurements at largely differing energy scales. To relate the…

High Energy Physics - Phenomenology · Physics 2024-06-27 Hubert Spiesberger , Stephan Wezorke
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