Argonne National Laboratory

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895 papers · 1 filter

nucl-ex2026

Precision Neutron Skins of $^{208}$ Pb and $^{48}$ Ca from Parity-Violating Electron Scattering

PREX Collaboration, D. Adhikari, H. Albataineh +100

We have measured the parity-violating elastic electron scattering asymmetry in the PREX and CREX experiments on $^{208}$ Pb and $^{48}$ Ca respectively; these are both doubly-mag…

nucl-ex2026

Observation of a dominant $0 f_{7/2}$ neutron configuration in the $^{32}$ Si $J^{π} = 5^{-}$ isomeric state

C. R. Hoffman, G. L. Wilson, J. Chen +8

An yrast, $J^{π} = 5^{-}$ , spin-trap isomer has been previously identified in $^{32}$ Si. The isomeric state decays predominantly via a hindered $E 3$ transition [B( $E 3$ ) = 0.0841(10)~W.u.…

nucl-ex2026

Multiple shape coexistence near Sn118: First 03+ lifetime measurement

F. Wu, C. R. Ding, C. Andreoiu +17

The intruder bands in Sn isotopes, built on the 2p-2h excitation across the $Z = 50$ proton shell gap, are well-known examples of shape coexistence near the neutron mid-shell regio…

nucl-ex2026

Implications for Type Ia Supernova Nucleosynthesis from an Experimentally Constrained $^{16}$ O $(p, α)^{13}$ N Reaction Rate

M. Alruwaili, C. Fougeres, A. M. Laird +13

The $^{16}$ O $(p, α)^{13}$ N reaction plays a key role in shaping the $α$ -particle abundance during explosive oxygen burning in Type Ia supernovae. By enhancing $α$ -production, this r…

nucl-ex2026

d(e,e'p) Studies of Exclusive Deuteron Electro-Disintegration

W. U. Boeglin, P. Ambrozewicz, K. Aniol +67

The d(e,e'p) cross section was measured at momentum transfers $Q^{2} =$ 0.8, 2.1 and 3.5 $(G e V / c)^{2}$ covering a wide range of proton kinematics at each $Q^{2}$ setting that made it po…

nucl-ex2026

Near-Threshold J/ $ψ \to μ^{+} μ^{-}$ Photoproduction and the Gluonic Gravitational Form Factors of the Proton

007 Collaboration, S. Joosten, Z. -E. Meziani +56

We report on the measurement of the two-dimensional differential cross section for near-threshold J/ $ψ \to μ^{+} μ^{-}$ photoproduction from the J/ $ψ$ -007 experiment in Hall C at Jeffers…

nucl-ex2025

Identified charged hadron production in Au+Au collisions at $s_{NN}$ = 54.4 GeV with the STAR detector

STAR Collaboration, B. E. Aboona, J. Adam +360

We present results on the production of $π^{\pm}$ , $K^{\pm}$ , $p$ , and $p ˉ$ in Au+Au collisions at $s_{NN}$ = 54.4~GeV using the STAR detector at RHIC, at midrap…

nucl-ex2025

Evidence of Spin-Interference Effects in Exclusive $J / ψ \to e^{+} e^{-}$ Photoproduction in Ultraperipheral Heavy-Ion Collisions

The STAR Collaboration

We report the first evidence of spin interference in exclusive $J / ψ \to e^{+} e^{-}$ photoproduction in ultraperipheral heavy-ion collisions at STAR at $s_{N N} = 200$ ~GeV. In Au+A…

nucl-ex2025

Backward-angle electroproduction of $η^{'}$ mesons off protons at $W = 2.13 GeV$ and $Q^{2} = 0.46 (GeV / c)^{2}$

T. Akiyama, P. Bydžovský, T. Gogami +83

The electroproduction of $η^{'}$ mesons from a $^{1} H$ target at $W = 2.13 GeV$ , $Q^{2} = 0.46 (GeV / c)^{2}$ and $\cos θ^{\text{CM}}_{γ^{*}η'} \approx…

nucl-ex2025

Exploration for Astromers near $^{132}$ Sn with the Canadian Penning Trap

A. A. Valverde, S. Cupp, A. Gross +26

Nuclear isomers can have significant impacts on astrophysical nucleosynthesis processes, with recent efforts demonstrating that the population of isomeric states with different hal…

nucl-ex2025★ 1 cited

Triaxiality and shape dynamics in $^{70}$ Ge

T. M. Kowalewski, A. D. Ayangeakaa, N. Sensharma +31

The electromagnetic properties of low-lying states in $^{70}$ Ge were investigated via multi-step Coulomb excitation of a $^{70}$ Ge beam impinging on a $^{208}$ Pb target at the ATLA…

nucl-ex2025★ 2 cited

Valence $1 s - 0 d$ proton vacancy of the $^{32}$ Si ground state

N. Watwood, C. R. Hoffman, B. P. Kay +22

The $^{32}$ Si( $^{3}$ He, $d$ ) $^{33}$ P reaction was studied in inverse kinematics at 6.3~MeV/ $u$ . States in $^{33}$ P corresponding to the proton $1 s - 0 d$ single-particle orbitals were id…

nucl-ex2025★ 3 cited

Observation of charmonium sequential suppression in heavy-ion collisions at the Relativistic Heavy Ion Collider

STAR Collaboration, B. E. Aboona, J. Adam +370

We report measurements of charmonium sequential suppression in Ru+Ru and Zr+Zr collisions at $s_{NN}$ = 200 GeV with the STAR experiment at the Relativistic Heavy…

nucl-ex2025★ 9 cited

Measurement of the azimuthal anisotropy of charged particles in $s_{NN} = 5.36$ TeV $^{16}$ O $+^{16}$ O and $^{20}$ Ne $+^{20}$ Ne collisions with the ATLAS detector

ATLAS Collaboration

This paper presents the first measurements of the azimuthal anisotropy coefficients $v_{n}$ , which quantify the $n^{th}$ -order Fourier modulation of charged-particle azimu…

nucl-ex2025★ 2 cited

Measurement of coherent exclusive $J / ψ \to μ^{+} μ^{-}$ production in ultraperipheral Pb+Pb collisions at $s_{NN} = 5.36$ TeV with the ATLAS detector

ATLAS Collaboration

The ATLAS experiment has performed a measurement of coherent exclusive $J / ψ \to μ^{+} μ^{-}$ production in ultraperipheral Pb+Pb collisions at $s_{NN} = 5.36$ TeV. The data…

nucl-ex2025★ 3 cited

Quenching of single-particle strength inferred from nucleon-removal transfer reactions on $^{15}$ C

Y. C. Jiang, J. Chen, B. P. Kay +24

The difference in the proton and neutron separation energies ( $Δ S$ ) of the weakly bound $^{15}$ C ground state is -19.86 MeV, an extreme value. Data from intermediate-energy heavy-i…

nucl-ex2025★ 2 cited

Evidence for shape coexistence in $^{120}$ Sn from the first $0_{3}^{+}$ lifetime measurement

F. Wu, C. Andreoiu, V. Karayonchev +14

The lifetime of the $0_{3}^{+}$ state in $^{120}$ Sn was measured for the first time applying the fast-timing technique following thermal neutron capture. The mean lifetime of $τ= 50(7)…

nucl-ex2025

Direct proton transfer on $^{46}$ Ar supports the presence of a charge density bubble linked to a novel nuclear structure below $^{48}$ Ca

Daniele Brugnara, Andrea Gottardo, Marlene Assiè +76

The $^{46}$ Ar( $^{3}$ He,d) $^{47}$ K reaction was performed in inverse kinematics using a radioactive $^{46}$ Ar beam produced by the SPIRAL1 facility at GANIL and a cryogenic $^{3}$ He t…

nucl-ex2025★ 5 cited

Universal Effective Charges in the $s d$ and $f p$ Shells

T. H. Ogunbeku, J. M. Allmond, T. J. Gray +79

The 247-keV state in $^{54}$ Sc, populated in the $β$ decay of $^{54}$ Ca, is reported here as a nanosecond isomer with a half-life of 26.0(22) ns. The state is interpreted as the $1…

nucl-ex2025

Making the $μ$ OST of the Muon Collider

Henry T. Klest

The Muon Collider, recently highlighted as Recommendation 1 in the U.S. National Academies report on Elementary Particle Physics, offers a unique opportunity for fixed-target exper…

nucl-ex2025★ 4 cited

Search for the chiral magnetic effect through beam energy dependence of charge separation using event shape selection

The STAR Collaboration

High-energy, heavy-ion collisions can create local domains of chirality-imbalanced quarks, reflecting the topological features of quantum chromodynamics. The chiral magnetic effect…

nucl-ex2025★ 3 cited

Measurement of medium-induced acoplanarity in central Au-Au and pp collisions at $s_{NN} = 200$ GeV using direct-photon+jet and $π^{0}$ +jet correlations

The STAR Collaboration

The STAR Collaboration reports measurements of acoplanarity using semi--inclusive distributions of charged--particle jets recoiling from direct photon and $π^{0}$ triggers, in cent…

nucl-ex2025

Measuring short-range correlations and quasi-elastic cross sections in A(e,e') at x>1 and modest Q $^{2}$

Y. P. Zhang, Z. H. Ye, D. Nguyen +96

We present results from the Jefferson Lab E08-014 experiment, investigating short-range correlations (SRC) through measurements of inclusive quasi-elastic scattering from $^{2}$ H, $^…

nucl-ex2025★ 13 cited

Onset of Constituent Quark Number Scaling in Heavy-Ion Collisions at RHIC

STAR Collaboration, B. E. Aboona, J. Adam +355

Partonic collectivity is one of the necessary signatures for the formation of quark-gluon plasma in high-energy nuclear collisions. Number of constituent quarks (NCQ) scaling has b…

Precision Neutron Skins of 208Pb and 48Ca from Parity-Violating Electron Scattering

Observation of a dominant 0f7/2​ neutron configuration in the 32Si Jπ=5− isomeric state

Multiple shape coexistence near Sn118: First 03+ lifetime measurement

Implications for Type Ia Supernova Nucleosynthesis from an Experimentally Constrained 16O(p,α)13N Reaction Rate

d(e,e'p) Studies of Exclusive Deuteron Electro-Disintegration

Near-Threshold J/ψ→μ+μ− Photoproduction and the Gluonic Gravitational Form Factors of the Proton

Identified charged hadron production in Au+Au collisions at sNN​​ = 54.4 GeV with the STAR detector

Evidence of Spin-Interference Effects in Exclusive J/ψ→e+e− Photoproduction in Ultraperipheral Heavy-Ion Collisions

Backward-angle electroproduction of η′ mesons off protons at W=2.13 GeV and Q2=0.46 (GeV/c)2

Exploration for Astromers near 132Sn with the Canadian Penning Trap

Triaxiality and shape dynamics in 70Ge

Valence 1s−0d proton vacancy of the 32Si ground state

Observation of charmonium sequential suppression in heavy-ion collisions at the Relativistic Heavy Ion Collider

Measurement of the azimuthal anisotropy of charged particles in sNN​​=5.36 TeV 16O+16O and 20Ne+20Ne collisions with the ATLAS detector

Measurement of coherent exclusive J/ψ→μ+μ− production in ultraperipheral Pb+Pb collisions at sNN​​=5.36 TeV with the ATLAS detector

Quenching of single-particle strength inferred from nucleon-removal transfer reactions on 15C

Evidence for shape coexistence in 120Sn from the first 03+​ lifetime measurement

Direct proton transfer on 46Ar supports the presence of a charge density bubble linked to a novel nuclear structure below 48Ca

Universal Effective Charges in the sd and fp Shells

Making the μOST of the Muon Collider

Search for the chiral magnetic effect through beam energy dependence of charge separation using event shape selection

Measurement of medium-induced acoplanarity in central Au-Au and pp collisions at sNN​​=200 GeV using direct-photon+jet and π0+jet correlations

Measuring short-range correlations and quasi-elastic cross sections in A(e,e') at x>1 and modest Q2

Onset of Constituent Quark Number Scaling in Heavy-Ion Collisions at RHIC

Precision Neutron Skins of $^{208}$ Pb and $^{48}$ Ca from Parity-Violating Electron Scattering

Observation of a dominant $0 f_{7/2}$ neutron configuration in the $^{32}$ Si $J^{π} = 5^{-}$ isomeric state

Implications for Type Ia Supernova Nucleosynthesis from an Experimentally Constrained $^{16}$ O $(p, α)^{13}$ N Reaction Rate

Near-Threshold J/ $ψ \to μ^{+} μ^{-}$ Photoproduction and the Gluonic Gravitational Form Factors of the Proton

Identified charged hadron production in Au+Au collisions at $s_{NN}$ = 54.4 GeV with the STAR detector

Evidence of Spin-Interference Effects in Exclusive $J / ψ \to e^{+} e^{-}$ Photoproduction in Ultraperipheral Heavy-Ion Collisions

Backward-angle electroproduction of $η^{'}$ mesons off protons at $W = 2.13 GeV$ and $Q^{2} = 0.46 (GeV / c)^{2}$

Exploration for Astromers near $^{132}$ Sn with the Canadian Penning Trap

Triaxiality and shape dynamics in $^{70}$ Ge

Valence $1 s - 0 d$ proton vacancy of the $^{32}$ Si ground state

Measurement of the azimuthal anisotropy of charged particles in $s_{NN} = 5.36$ TeV $^{16}$ O $+^{16}$ O and $^{20}$ Ne $+^{20}$ Ne collisions with the ATLAS detector

Measurement of coherent exclusive $J / ψ \to μ^{+} μ^{-}$ production in ultraperipheral Pb+Pb collisions at $s_{NN} = 5.36$ TeV with the ATLAS detector

Quenching of single-particle strength inferred from nucleon-removal transfer reactions on $^{15}$ C

Evidence for shape coexistence in $^{120}$ Sn from the first $0_{3}^{+}$ lifetime measurement

Direct proton transfer on $^{46}$ Ar supports the presence of a charge density bubble linked to a novel nuclear structure below $^{48}$ Ca

Universal Effective Charges in the $s d$ and $f p$ Shells

Making the $μ$ OST of the Muon Collider

Measurement of medium-induced acoplanarity in central Au-Au and pp collisions at $s_{NN} = 200$ GeV using direct-photon+jet and $π^{0}$ +jet correlations

Measuring short-range correlations and quasi-elastic cross sections in A(e,e') at x>1 and modest Q $^{2}$