activity
20102025
most citedPrecision Measurement of the Neutron Beta-Decay Asymmetry

98 citations · 362 across the 12 of their papers we have counts for

collaborators

12 papers

astro-ph.HE2025

Hadronic Clues in Quasars Caught by Fermi-LAT

Antonio Galván, Nissim Fraija, Edilberto Aguilar-Ruiz +3

This work explores whether hadronic processes could be responsible for the high-energy emission seen in quasars identified by the Large Area Telescope (LAT) instrument aboard the F…

astro-ph.HE2025

Late-afterglow Emission from a Quasi-spherical Outflow in a stratified environment

Nissim Fraija, Boris Betancourt-Kamenetskaia, Antonio Galván +7

Gamma-ray bursts (GRBs) are cosmic events occurring at large distances beyond our galaxy. They provide a unique opportunity to study electromagnetic patterns not seen elsewhere. Wh…

hep-ex2025

Piritakua: the atmosphere as a high-energy physics laboratory

Hermes León Vargas, Antonio Galván, Andrés Sandoval +3

The atmosphere provides a large set of experimental conditions on which cosmic-ray induced high-energy hadron interactions can take place. These conditions include: sudden changes…

astro-ph.HE2025

Magnetic Burial in Millisecond Magnetars and Late GRB Afterglow Signatures

Nissim Fraija, Cristian Giovanni Bernal, Antonio Galván +2

Millisecond magnetars, one of the potential candidates for the central engine of Gamma-ray bursts (GRBs), can experience significant magnetic field enhancement shortly after their…

astro-ph.HE2021

Testing high energy neutrino emission from the Fermi Gamma-ray Space Telescope Large Area Telescope (4LAC) sources

Antonio Galván, Nissim Fraija, Edilberto Aguilar-Ruiz +3

The detection of the high-energy neutrino IC-170922A in spatial (within the error region) and temporal flare activity correlation with the blazar TXS 0506+056 allowed these objects…

nucl-ex2019★ 31 cited

Improved limits on Fierz Interference using asymmetry measurements from the UCNA experiment

Xuan Sun, E. Adamek, B. Allgeier +56

The Ultracold Neutron Asymmetry (UCNA) experiment was designed to measure the -decay asymmetry parameter, , for free neutron decay. In the experiment, polarized ultracold n…

nucl-ex2018★ 50 cited

Search for dark matter decay of the free neutron from the UCNA experiment: n

X. Sun, E. Adamek, B. Allgeier +57

It has been proposed recently that a previously unobserved neutron decay branch to a dark matter particle () could account for the discrepancy in the neutron lifetime observed i…

nucl-ex2017★ 97 cited

New result for the neutron -asymmetry parameter from UCNA

M. A. -P. Brown, E. B. Dees, E. Adamek +56

The neutron -decay asymmetry parameter defines the correlation between the spin of the neutron and the momentum of the emitted electron, which determines $λ=\frac{g_{A}}{g…

astro-ph.HE2017

Observation of radio galaxies with HAWC

Daniel Avila Rojas, Rubén Alfaro, Antonio Galván +3

The High Altitude Water Cherenkov (HAWC) Gamma-Ray Observatory is an extensive air shower array located in Puebla, Mexico. The closest radio galaxy within the HAWC field of view, M…

nucl-ex2017★ 21 cited

First direct constraints on Fierz interference in free neutron decay

K. P. Hickerson, X. Sun, Y. Bagdasarova +40

Precision measurements of free neutron -decay have been used to precisely constrain our understanding of the weak interaction. However the neutron Fierz interference term ,…

nucl-ex2012★ 98 cited

Precision Measurement of the Neutron Beta-Decay Asymmetry

M. P. Mendenhall, R. W. Pattie, Y. Bagdasarova +38

A new measurement of the neutron -decay asymmetry has been carried out by the UCNA collaboration using polarized ultracold neutrons (UCN) from the solid deuterium UCN sour…

nucl-ex2010★ 65 cited

Determination of the Axial-Vector Weak Coupling Constant with Ultracold Neutrons

UCNA Collaboration, J. Liu, M. P. Mendenhall +37

A precise measurement of the neutron decay -asymmetry has been carried out using polarized ultracold neutrons (UCN) from the pulsed spallation UCN source at the Los Alamos…