Michigan State University

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

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903 papers · 1 filter

nucl-ex2026

Observing the effects of numbers of valence nucleons on $0_{g s}^{+} \to 2_{1}^{+}$ transitions in deformed nuclei by comparing proton and neutron transition matrix elements

P. D. Cottle, L. A. Riley, A. Gade +2

We examined the ratios of neutron and proton transition matrix elements, $M_{n} / M_{p}$ , for the $0_{g s}^{+} \to 2_{1}^{+}$ transitions in 48 even-even stable nuclei with $N > 20$ for w…

nucl-ex2026

The dipole strength distribution of $^{8}$ He and decay characteristics

C. Lehr, T. Aumann, M. Duer +91

The weak binding and spatially extended neutron densities characteristic of drip-line nuclei give rise to a distinctive low-energy dipole response. The drip-line nucleus $^{8}$ He is…

nucl-ex2026★ 1 cited

Direct observation of three-neutron emission from $^{7}$ He $^{*}$ and the search for the trineutron

S. W. Huang, C. Lenain, Z. H. Yang +107

Three-neutron emission from $^{7}$ He has been directly measured for the first time, following neutron knockout from a $^{8}$ He beam at 156 MeV/nucleon. A resonance-like structure at $2…

nucl-ex2026

A ground state $^{22}$ Al halo is unlikely

E. A. M. Jensen, J. S. Nielsen, B. S. O. Johansson +13

We report the decisive resolution of the ground state spin and parity of the proton-dripline nucleus $^{22}$ Al, a prime candidate for a proton halo. The resolution stems from the f…

nucl-ex2025★ 1 cited

Comparing invariant-mass spectroscopy of 8B with ab initio predictions

R. J. Charity, G. H. Sargsyan, K. D. Launey +3

Levels in 8B have been investigated experimentally using the invariant-mass technique and compared to ab initio calculations. Data sets obtained using E/A=69-MeV 9C and 13O beams o…

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★ 3 cited

Constraining the Synthesis of the Lightest p Nucleus 74Se

A. Tsantiri, A. Spyrou, E. C. Good +42

We provide the first experimental cross section of the $^{73} As (p, γ)^{74} Se$ reaction to constrain one of the main destruction mechanisms of the p nucleus $^{74}\text…

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★ 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

$β$ -delayed proton pandemonium: A first detailed $^{31}$ Cl( $β p γ$ ) $^{30}$ P decay scheme

Tamas Budner, Moshe Friedman, Lijie Sun +20

Positron decays of proton-rich nuclides exhibit large $Q$ values, producing complex cascades which frequently involve various radiations, including protons and $γ$ rays. Often, onl…

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★ 1 cited

Extraction of neutron-capture cross sections on $^{92}$ Zr using the charge-exchange Oslo method

N. D. Pathirana, R. G. T. Zegers, B. Gao +16

The $^{93}$ Nb( $t$ , $^{3}$ He) reaction at 115 MeV/u was studied to demonstrate that nuclear level densities and $γ$ -ray strength functions can be extracted from charge-exchange react…

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★ 2 cited

Determination of proton and neutron contributions to the $0_{g . s .}^{+} \to 2_{1}^{+}$ excitations in $^{42}$ Si and $^{44}$ S using inelastic proton scattering in inverse kinematics and intermediate energy Coulomb excitation

L. A. Riley, I. Conroy, A. M. Himmelreich +26

We have measured the $0_{g . s .}^{+} \to 2_{1}^{+}$ transition in the neutron rich $N = 28$ isotope $^{42}$ Si using the probes of intermediate energy Coulomb excitation and inelastic…

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★ 1 cited

Intruder structures in $^{32}$ Si and $^{29}$ Al

J. Williams, G. Hackman, K. Starosta +31

We have studied $^{32}$ Si and $^{29}$ Al using $^{12}$ C( $^{22}$ Ne,2p) and $^{12}$ C( $^{22}$ Ne, $α$ p) fusion-evaporation reactions. In both cases, we observed significant population of…

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★ 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★ 1 cited

Reduction in nuclear size and quadrupole deformation of high-spin isomers of 127,129In

A. R. Vernon, C. L. Binnersley, R. F. Garcia Ruiz +29

We employed laser spectroscopy of atomic transitions to measure the nuclear charge radii and electromagnetic properties of the high-spin isomeric states in neutron-rich indium isot…

nucl-ex2025

Extraction of the non-spin- and spin-transfer isovector responses via the $^{12} C (^{10} Be,^{10} B + γ)^{12} B$ reaction

Sk M. Ali, C. Maher, R. G. T. Zegers +19

The isovector response in $^{12}$ B was investigated via the $^{12}$ C( $^{10} Be$ , $^{10} B$ + $γ$ ) $^{12}$ B $^{*}$ reaction at $100 A MeV$ . By utilizing the…

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★ 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…

Observing the effects of numbers of valence nucleons on 0gs+​→21+​ transitions in deformed nuclei by comparing proton and neutron transition matrix elements

The dipole strength distribution of 8He and decay characteristics

Direct observation of three-neutron emission from 7He∗ and the search for the trineutron

A ground state 22Al halo is unlikely

Comparing invariant-mass spectroscopy of 8B with ab initio predictions

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

Constraining the Synthesis of the Lightest p Nucleus 74Se

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

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

β-delayed proton pandemonium: A first detailed 31Cl(βpγ)30P decay scheme

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

Extraction of neutron-capture cross sections on 92Zr using the charge-exchange Oslo method

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

Determination of proton and neutron contributions to the 0g.s.+​→21+​ excitations in 42Si and 44S using inelastic proton scattering in inverse kinematics and intermediate energy Coulomb excitation

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

Intruder structures in 32Si and 29Al

Universal Effective Charges in the sd and fp Shells

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

Reduction in nuclear size and quadrupole deformation of high-spin isomers of 127,129In

Extraction of the non-spin- and spin-transfer isovector responses via the 12C(10Be,10B+γ)12B reaction

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

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

Observing the effects of numbers of valence nucleons on $0_{g s}^{+} \to 2_{1}^{+}$ transitions in deformed nuclei by comparing proton and neutron transition matrix elements

The dipole strength distribution of $^{8}$ He and decay characteristics

Direct observation of three-neutron emission from $^{7}$ He $^{*}$ and the search for the trineutron

A ground state $^{22}$ Al halo is unlikely

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 $Q^{2} = 0.46 (GeV / c)^{2}$

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

$β$ -delayed proton pandemonium: A first detailed $^{31}$ Cl( $β p γ$ ) $^{30}$ P decay scheme

Extraction of neutron-capture cross sections on $^{92}$ Zr using the charge-exchange Oslo method

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

Determination of proton and neutron contributions to the $0_{g . s .}^{+} \to 2_{1}^{+}$ excitations in $^{42}$ Si and $^{44}$ S using inelastic proton scattering in inverse kinematics and intermediate energy Coulomb excitation

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

Intruder structures in $^{32}$ Si and $^{29}$ Al

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

Extraction of the non-spin- and spin-transfer isovector responses via the $^{12} C (^{10} Be,^{10} B + γ)^{12} B$ reaction

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