James Madison University

output

19982026

most citedMeasurement of the Positive Muon Anomalous Magnetic Moment to 0.46 ppm

1.3k citations

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions

Showing 2020Show all

17 papers · 1 filter

nucl-ex2020

High precision measurements of half-lives for 69Ge, 73Se, 83Sr, 85mSr, and 63Zn radionuclides relevant to the astrophysical p-process via photoactivation at the Madison Accelerator Laboratory

T. A. Hain, S. J. Pendleton, J. A. Silano +1

The ground state half-lives of 69Ge, 73Se, 83Sr, 63Zn, and the half-life of the 1/2- isomer in 85Sr have been measured with high precision using the photoactivation technique at an…

astro-ph.HE2020★ 15 cited

A variable magnetic disc wind in the black hole X-ray binary GRS 1915+105?

Ajay Ratheesh, Francesco Tombesi, Kiego Fukumura +3

GRS 1915+105 being one of the brightest transient black hole binary (BHB) in the X-rays, offers a unique test-bed for the study of the connection between accretion and ejection mec…

nucl-ex2020★ 35 cited

Ruling out color transparency in quasi-elastic $^{12}$ C(e,e'p) up to $Q^{2}$ of 14.2 (GeV/c) $^{2}$

D. Bhetuwal, J. Matter, H. Szumila-Vance +87

Quasielastic $^{12}$ C $(e, e^{'} p)$ scattering was measured at space-like 4-momentum transfer squared $Q^{2}$ ~=~8, 9.4, 11.4, and 14.2 (GeV/c) $^{2}$ , the highest ever achieved to date. Nucl…

nucl-ex2020★ 8 cited

Photoproduction of the $f_{2} (1270)$ meson using the CLAS detector

M. ~Carver, A. ~Celentano, K. ~Hicks +137

The quark structure of the $f_{2} (1270)$ meson has, for many years, been assumed to be a pure quark-antiquark ( $q q ˉ$ ) resonance with quantum numbers $J^{P C} = 2^{++}$ . Recently,…

hep-th2020★ 16 cited

The Forced Soliton Equation and Semiclassical Soliton Form Factors

Ilarion V. Melnikov, Constantinos Papageorgakis, Andrew B. Royston

We show that the leading semiclassical behavior of soliton form factors at arbitrary momentum transfer is controlled by solutions to a new wave-like integro-differential equation t…

hep-ex2020★ 14 cited

Beam spin asymmetry in semi-inclusive electroproduction of a hadron pair

M. Mirazita, H. Avakian, A. Courtoy +140

A first measurement of the longitudinal beam spin asymmetry ALU in the semi-inclusive electroproduction of pairs of charged pions is reported. ALU is a higher-twist observable and…

nucl-ex2020★ 16 cited

Probing the Deuteron at Very Large Internal Momenta

Carlos Yero

$^{2} H (e, e^{'} p) n$ cross sections have been measured at 4-momentum transfers of $Q^{2} = 4.5 \pm 0.5$ (GeV/c) $^{2}$ over a range of neutron recoil momenta, $p_{r}$ ,…

nucl-ex2020★ 22 cited

Extraction of beam-spin asymmetries from the hard exclusive $π^{+}$ channel off protons in a wide range of kinematics

S. Diehl, K. Joo, A. Kim +135

We have measured beam-spin asymmetries to extract the $sin ϕ$ moment $A_{LU}^{s i n ϕ}$ from the hard exclusive $e p \to e^{'} n π^{+}$ reaction above the resonance region, fo…

hep-th2020★ 9 cited

Accelerating Solitons

Ilarion V. Melnikov, Constantinos Papageorgakis, Andrew B. Royston

We present the saddle-point approximation for the effective Hamiltonian of the quantum kink in two-dimensional linear sigma models to all orders in the time-derivative expansion. W…

math.MG2020

A proof of the Koebe-Andre'ev-Thurston theorem via flow from tangency packings

John C. Bowers

Recently, Connelly and Gortler gave a novel proof of the circle packing theorem for tangency packings by introducing a hybrid combinatorial-geometric operation, flip-and-flow, that…

nucl-ex2020★ 45 cited

An experimental program with high duty-cycle polarized and unpolarized positron beams at Jefferson Lab

A. Accardi, A. Afanasev, I. Albayrak +227

Positron beams, both polarized and unpolarized, are identified as essential ingredients for the experimental programs at the next generation of lepton accelerators. In the context…

nucl-ex2020★ 6 cited

Photoproduction of $η$ mesons off the proton for $1.2 < E_{γ} < 4.7$ GeV using CLAS at Jefferson Laboratory

T. Hu, Z. Akbar, V. Crede +148

Photoproduction cross sections are reported for the reaction $γ p \to p η$ using energy-tagged photons and the CLAS spectrometer at Jefferson Laboratory. The $η$ mesons are detected i…

nucl-ex2020★ 102 cited

Probing the core of the strong nuclear interaction

A. Schmidt, J. R. Pybus, R. Weiss +162

The strong nuclear interaction between nucleons (protons and neutrons) is the effective force that holds the atomic nucleus together. This force stems from fundamental interactions…

astro-ph.GA2020★ 3 cited

Gamma-Ray Absorption By The Cosmic Lyman Continuum From Star-forming Galaxies

Matthew A. Malkan, Sean T. Scully, Floyd W. Stecker

Motivated by the discovery of the ultra-strong emission line starburst galaxies (EELGs) known as "green pea galaxies", we consider here their contribution to the intergalactic flux…

nucl-ex2020★ 11 cited

First measurement of direct photoproduction of the $a_{2} (1320)^{0}$ meson on the proton

A. Celentano, M. Battaglieri, R. De Vita +4

We present the first measurement of the exclusive reaction $γ p \to a_{2} (1320)^{0} p$ in the photon energy range $3.5$ - $5.5$ GeV and four-momentum transfer squared $0.2<-t<2…

astro-ph.HE2020★ 1 cited

Iron Line Tomography of General Relativistic Hydrodynamic Accretion around Kerr Black Holes

Kaitlyn Porter, Keigo Fukumura

We consider a temporal response of relativistically broadened line spectrum of iron from black hole accretion irradiated by an X-ray echo under strong gravity. The physical conditi…

cs.HC2020★ 14 cited

Phoenixmap: An Abstract Approach to Visualize 2D Spatial Distributions

Junhan Zhao, Xiang Liu, Chen Guo +2

The multidimensional nature of spatial data poses a challenge for visualization. In this paper, we introduce Phoenixmap, a simple abstract visualization method to address the issue…