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EDITORIALS AND ANNOUNCEMENTS

Editorial: Coauthor! Coauthor!

Randall D. Kamien and Daniel Ucko

Phys. Rev. C 109, 050001 (2024) - Published 21 May, 2024

HIGHLIGHTED ARTICLES

First measurement in a magnetic confinement fusion experiment of the H3+H3He5+n intermediate two-body resonant reaction

B. Eriksson, S. Conroy, G. Ericsson, J. Eriksson, A. Hjalmarsson, C. R. Brune, M. Gatu Johnson, M. Nocente, S. Fugazza, and M. Rebai

Phys. Rev. C 109, 054620 (2024) - Published 23 May, 2024

This work reports the first experimental measurements made at a magnetic confinement fusion device (JET) of the T+Tα+2n reaction, indicating the presence of an intermediate 5He state in the two-body resonant reaction T+T5He+n. Such measurements, in which two tritium nuclei (3H or T) fuse into helium (4He or α), are relevant for modeling the neutron emission spectrum and estimating fuel content and confinement characteristics for magnetic confinement fusion. The results are also relevant for solar physics, as the mirror reaction 3He+3He4He+2p plays a role in the proton-proton chain of solar fusion.

Tractable T-matrix model for reaction processes in muon-catalyzed fusion (dtμ)J=v=0α+n+μ+17.6 MeV or (αμ)nl+n+17.6 MeV

Qian Wu and Masayasu Kamimura

Phys. Rev. C 109, 054625 (2024) - Published 31 May, 2024

At low temperatures (10–1000 K), negative muons injected into a mixture of deuterium (D) and tritium (T) can catalyze the d+t fusion reaction into helium, which yields a neutron and 17.6 MeV energy. Following the catalyzed reaction, free muons can facilitate another fusion reaction, leading to a cyclic reaction known as muon-catalyzed fusion (μCF), a potential candidate for energy production. μCF has recently regained considerable research interest owing to several new developments and applications. For the nuclear reaction processes, the authors provide an elegant alternative to more complicated coupled-channels (CC) models (Kamimura et al., PRC 107, 034607) by replacing in the transition matrix the exact three-body wave function with a solution that uses a tailored d-t optical potential. The calculated results reproduce well those of the full CC calculations, and the proposed tractable transition-matrix model promises applications to other μCF systems. The predicted low-energy negative muon spectrum will also be useful for the generation of an ultraslow negative muon beam by utilizing the μCF for various applications, such as a scanning negative muon microscope and an injection source for the muon collider.

Exploring freeze-out and flow using exact solutions of conformal hydrodynamics

Owen Bradley and Christopher Plumberg

Phys. Rev. C 109, 054913 (2024) - Published 28 May, 2024

The modeling of relativistic collisions of nuclei is typically performed by numerically solving the equations of relativistic hydrodynamics. In a few rare cases, exact solutions to these equations exist. The authors derive two novel exact solutions which practitioners may use to verify their hydrodynamics algorithms. The work highlights the importance of an accurate description of the freeze-out configuration in systems characterized by large transverse and longitudinal flows and in collisions with large flow gradients, particularly in small systems.

Evaluation of the E2/M1 ratio in the NΔ(1232) transition from the γppπ0 reaction

E. Mornacchi et al. (A2 Collaboration at MAMI)

Phys. Rev. C 109, 055201 (2024) - Published 6 May, 2024

The transition from the nucleon to the Δ(1232) resonance is a sensitive test for models of the nucleon structure. A magnetic dipole (M1) quark spin-flip transition essentially dominates photoexcitation of the Δ, but smaller components in the nucleon and Δ wave functions allow also electric quadrupole (E2) contributions. The ratio E2/M1 then provides fundamental information on both the spatial deformation of the nucleon or Δ, and on the corresponding D states in their quark-model wave functions. The authors measured the E2/M1 ratio via single π0 production from the proton with a circularly polarized photon beam and a longitudinally polarized proton target, exploiting the presence of interference terms between the measured amplitudes that enhance the effect of smaller contributions. This most precise experimental result to date for the E2/M1 ratio gives deep insight into the nucleon properties and provides a precision benchmark for all nonperturbative QCD models.

Half-life of Ge71 and the gallium anomaly

E. B. Norman, A. Drobizhev, N. Gharibyan, K. E. Gregorich, Yu. G. Kolomensky, B. N. Sammis, N. D. Scielzo, J. A. Shusterman, and K. J. Thomas

Phys. Rev. C 109, 055501 (2024) - Published 30 May, 2024

Several past experiments such as SAGE, GALLEX, and BEST reported lower than expected neutrino capture rates on 71Ga. The origin of this so-called “gallium anomaly” could potentially indicate new neutrino physics, unless there was a more mundane explanation. Because the measured half-life of the electron-capture decay of 71Ge can be used to calculate the neutrino-capture cross section on 71Ga, the authors carried out three separate measurements to determine the half-life of 71Ge with high precision. Their new result of 11.468±0.008 days for the 71Ge half-life is consistent with the currently accepted value, but significantly more precise. It rules out an unexpectedly long 71Ge half-life as a potential explanation of the puzzling anomaly, leaving the anomaly’s origin an open question.

LETTERS

Five-dimensional collective Hamiltonian with improved inertial functions

Kouhei Washiyama, Nobuo Hinohara, and Takashi Nakatsukasa

Phys. Rev. C 109, L051301 (2024) - Published 3 May, 2024

Isomeric structure in the Sn100 region: Possible competition between β+ decay and proton emission in the isomeric unbound nucleus Sn97

Boshuai Cai, Cenxi Yuan, Guangxin Zhang, Yinu Zhang, Menglan Liu, Yuanming Xing, Xinxing Xu, Jianguo Li, and Meng Wang

Phys. Rev. C 109, L051302 (2024) - Published 9 May, 2024

Evidence for octupole correlation in Z=50 Sn isotopes: Spectroscopy of Sn112

L. Mu (穆琳) et al.

Phys. Rev. C 109, L051303 (2024) - Published 10 May, 2024

Exact solution of Boltzmann equation in a longitudinal expanding system

Shile Chen and Shuzhe Shi

Phys. Rev. C 109, L051901 (2024) - Published 2 May, 2024

Thermalization at the femtoscale seen in high-energy Pb+Pb collisions

Rupam Samanta, Somadutta Bhatta, Jiangyong Jia, Matthew Luzum, and Jean-Yves Ollitrault

Phys. Rev. C 109, L051902 (2024) - Published 3 May, 2024

Hanbury-Brown–Twiss signature for clustered substructures probing primordial inhomogeneity in hot and dense QCD matter

Kenji Fukushima, Yoshimasa Hidaka, Katsuya Inoue, Kenta Shigaki, and Yorito Yamaguchi

Phys. Rev. C 109, L051903 (2024) - Published 7 May, 2024

Exploring the compactness of α clusters in O16 nuclei with relativistic O16+O16 collisions

Yuanyuan Wang, Shujun Zhao, Boxing Cao, Hao-jie Xu, and Huichao Song

Phys. Rev. C 109, L051904 (2024) - Published 7 May, 2024

First measurement of ΛN inelastic scattering with Λ from e+eJ/ψΛΛ¯

M. Ablikim et al. (BESIII Collaboration)

Phys. Rev. C 109, L052201 (2024) - Published 14 May, 2024

Analog-antianalog isospin mixing in K47 β decay

Brian Kootte, H. Gallop, C. Luktuke, J. C. McNeil, A. Gorelov, D. G. Melconian, J. Klimo, B. M. Vargas-Calderon, and J. A. Behr

Phys. Rev. C 109, L052501 (2024) - Published 24 May, 2024

ARTICLES

Nucleon-Nucleon Interaction, Few-Body Systems

A=3(e,e)xB1 cross-section ratios and the isospin structure of short-range correlations

A. Schmidt, A. W. Denniston, E. M. Seroka, N. Barnea, D. W. Higinbotham, I. Korover, G. A. Miller, E. Piasetzky, M. Strikman, L. B. Weinstein, R. Weiss, and O. Hen

Phys. Rev. C 109, 054001 (2024) - Published 1 May, 2024

Examination of the ϕNN bound-state problem with lattice QCD Nϕ potentials

Faisal Etminan and Amanullah Aalimi

Phys. Rev. C 109, 054002 (2024) - Published 24 May, 2024

Feasibility of perturbative generation of bound states from resonances or virtual states

C.-J. Yang

Phys. Rev. C 109, 054003 (2024) - Published 24 May, 2024

Nuclear Structure

Uncertainty quantification of mass models using ensemble Bayesian model averaging

Yukiya Saito, I. Dillmann, R. Krücken, M. R. Mumpower, and R. Surman

Phys. Rev. C 109, 054301 (2024) - Published 1 May, 2024

C10 + α elastic scattering: A study of the proton-rich O14 nucleus and α clustering

N. R. Ma, M. Sferrazza, H. Yamaguchi, S. Okamoto, P. Descouvemont, S. Hayakawa, S. Cherubini, T. Doi, Y. Fujikawa, K. Inaba, T. Kawabata, A. Kohda, G. Manicò, M. La Cognata, S. Palmerini, R. G. Pizzone, A. Sakaue, K. Sakanashi, and H. Shimizu

Phys. Rev. C 109, 054302 (2024) - Published 2 May, 2024

Gallagher-Moszkowski splitting in deformed odd-odd nuclei within a microscopic approach

L. Bonneau, N. Kontowicz, J. Bartel, H. Molique, Meng-Hock Koh (辜明福), and N. Minkov

Phys. Rev. C 109, 054303 (2024) - Published 3 May, 2024

Eigenphase shift decomposition of the random-phase approximation strength function based on the Jost-RPA method

K. Mizuyama, T. Dieu Thuy, and T. V. Nhan Hao

Phys. Rev. C 109, 054304 (2024) - Published 3 May, 2024

Nuclear level density and γ-decay strength of Sr93

A. Sweet, D. L. Bleuel, N. D. Scielzo, L. A. Bernstein, A. C. Dombos, B. L. Goldblum, C. M. Harris, T. A. Laplace, A. C. Larsen, R. Lewis, S. N. Liddick, S. M. Lyons, F. Naqvi, A. Palmisano-Kyle, A. L. Richard, M. K. Smith, A. Spyrou, J. Vujic, and M. Wiedeking

Phys. Rev. C 109, 054305 (2024) - Published 6 May, 2024

Extended interacting boson model with configuration mixing description for Mo98

Feng Pan, Lianrong Dai, Jerry P. Draayer, and David Kekejian

Phys. Rev. C 109, 054306 (2024) - Published 6 May, 2024

Synthesis and decay properties of isotopes of element 110: Ds273 and Ds275

Yu. Ts. Oganessian et al.

Phys. Rev. C 109, 054307 (2024) - Published 6 May, 2024

Cluster structure of 3α+p states in N13

J. Bishop, G. V. Rogachev, S. Ahn, M. Barbui, S. M. Cha, E. Harris, C. Hunt, C. H. Kim, D. Kim, S. H. Kim, E. Koshchiy, Z. Luo, C. Park, C. E. Parker, E. C. Pollacco, B. T. Roeder, M. Roosa, A. Saastamoinen, and D. P. Scriven

Phys. Rev. C 109, 054308 (2024) - Published 8 May, 2024

Single-particle excitations and possible collective rotation in Rn207

R. Guo, J. B. Lu, L. H. Zhu, D. Chen, J. Li, M. Wang, B. H. Sun, G.-L Zhang, Z. Ren, Y. Zheng, C. Y. He, G. S. Li, J. L. Wang, X. G. Wu, and S. H. Yao

Phys. Rev. C 109, 054309 (2024) - Published 8 May, 2024

α-decay half-lives for even-even isotopes of W to U

Yong-Beom Choi, Chang-Hwan Lee, Myeong-Hwan Mun, Soonchul Choi, and Youngman Kim

Phys. Rev. C 109, 054310 (2024) - Published 8 May, 2024

Systematic study of the low-lying electric dipole strength in Sn isotopes and its astrophysical implications

M. Markova, A. C. Larsen, P. von Neumann-Cosel, E. Litvinova, A. Choplin, S. Goriely, S. Martinet, L. Siess, M. Guttormsen, F. Pogliano, and S. Siem

Phys. Rev. C 109, 054311 (2024) - Published 8 May, 2024

Possibility of stable octupole deformation in Ru100

A. Karmakar, P. Datta, Soumik Bhattacharya, Shabir Dar, S. Bhattacharyya, G. Mukherjee, H. Pai, S. Basu, S. Nandi, S. S. Nayak, Sneha Das, R. Raut, S. S. Ghugre, Sajad Ali, R. Banik, W. Shaikh, and S. Chattopadhyay

Phys. Rev. C 109, 054312 (2024) - Published 8 May, 2024

Modern numerical differentiation technique for extracting nucleon momentum distributions

Tongqi Liang, Dong Bai, and Zhongzhou Ren

Phys. Rev. C 109, 054313 (2024) - Published 13 May, 2024

BCS variation method and universal behavior of trapped neutron systems at unitary limit

Y. Y. Cheng and Y. M. Zhao

Phys. Rev. C 109, 054314 (2024) - Published 14 May, 2024

Radius extrapolations for two-body bound states in finite volume

Anderson Taurence and Sebastian König

Phys. Rev. C 109, 054315 (2024) - Published 16 May, 2024

Dominant nucleon-pair configurations in low-lying states of deformed nuclei

C. Ma, X. Yin, and Y. M. Zhao

Phys. Rev. C 109, 054316 (2024) - Published 16 May, 2024

Low-spin states in Sn118 populated by the radiative capture of thermal neutrons

K. Ortner et al.

Phys. Rev. C 109, 054317 (2024) - Published 17 May, 2024

Nuclear structure of Ge74 from inelastic neutron scattering measurements and shell-model calculations

E. E. Peters, B. A. Brown, S. Mukhopadhyay, A. P. D. Ramirez, and S. W. Yates

Phys. Rev. C 109, 054318 (2024) - Published 20 May, 2024

Magnetic dipole excitations in magic nuclei with subtracted second random-phase approximation

M. J. Yang, C. L. Bai, H. Sagawa, and H. Q. Zhang

Phys. Rev. C 109, 054319 (2024) - Published 20 May, 2024

Spin and parity assignments for low-lying states in the odd-mass nucleus Ta181

T. Shizuma, M. Omer, R. Hajima, and M. Koizumi

Phys. Rev. C 109, 054320 (2024) - Published 20 May, 2024

Influences of deformation parameters on wobbling motion

H. M. Dai and Q. B. Chen

Phys. Rev. C 109, 054321 (2024) - Published 23 May, 2024

Probing the role of photon strength function models in determining the properties of the hot giant dipole resonance

Debasish Mondal, Chandrani Sen, S. Mukhopadhyay, Deepak Pandit, Surajit Pal, J. Sadhukhan, Saumanti Sadhukhan, Balaram Dey, Srijit Bhattacharya, A. De, Pratap Roy, T. K. Rana, Rajkumar Santra, and C. Bhattacharya

Phys. Rev. C 109, 054322 (2024) - Published 23 May, 2024

Effects of center-of-mass correction and nucleon anomalous magnetic moments on nuclear charge radii

Yusuke Tanimura and Myung-Ki Cheoun

Phys. Rev. C 109, 054323 (2024) - Published 23 May, 2024

Shell-cluster transition in Ti48

M. Okada, W. Horiuchi, and N. Itagaki

Phys. Rev. C 109, 054324 (2024) - Published 24 May, 2024

Reduction of spectroscopic overlap across the Z=8 shell in neutron-rich nuclei

T. Redpath, P. Guèye, T. Baumann, B. A. Brown, A. Cunningham, P. A. DeYoung, N. Frank, C. R. Hoffman, A. N. Kuchera, B. Monteagudo Godoy, C. Persch, A. Revel, W. F. Rogers, M. Thoennessen, J. A. Tostevin, and D. Votaw

Phys. Rev. C 109, 054325 (2024) - Published 24 May, 2024

Dominant magnetic-dipole nuclear excitation by electron capture in a beam-based scenario for the Rb84m isomer

K. Słabkowska, Ł. Syrocki, M. Polasik, J. J. Carroll, C. J. Chiara, and J. Rzadkiewicz

Phys. Rev. C 109, 054327 (2024) - Published 29 May, 2024

Spectroscopic study of V50

Arkadip Bera, Abhijit Bisoi, Y. Sapkota, Rozina Rahaman, Anik Adhikari, Arkabrata Gupta, Ananya Das, H. Ghosh, S. Sarkar, Dibyadyuti Pramanik, Sangeeta Das, Sathi Sharma, S. Ray, Shabir Dar, S. Nandi, S. Bhattacharya, T. Bhattacharjee, G. Mukherjee, S. Bhattacharyya, S. Samanta, S. Das, S. Chatterjee, R. Raut, and S. S. Ghugre

Phys. Rev. C 109, 054328 (2024) - Published 30 May, 2024

Investigation of C1214 isotopes via Tohsaki-Horiuchi-Schuck-Röpke wave function with cluster breaking

Songjie Li, Mengjiao Lyu, Zhongzhou Ren, Qing Zhao, Songju Lei, Akihiro Tohsaki, Gerd Röpke, Hisashi Horiuchi, Chang Xu, Niu Wan, and Bo Zhou

Phys. Rev. C 109, 054329 (2024) - Published 31 May, 2024

Matter distribution of C1220,22 isotopes

M. Mouadil, A. Khouaja, O. Jdair, Y. Elabssaoui, M. L. Bouhssa, H. Badane, I. Mhalli, Z. Sobhy, L. Hasbi, B. Elouardi, J. Inchaouh, and A. Morsad

Phys. Rev. C 109, 054330 (2024) - Published 31 May, 2024

Nuclear Reactions

Level densities for Ga69,71 nuclei using a particle-evaporation technique

A. V. Voinov, M. Hartos, C. R. Brune, S. M. Grimes, Y. Jones-Alberty, T. N. Massey, S. Paneru, and S. K. Subedi

Phys. Rev. C 109, 054601 (2024) - Published 2 May, 2024

New insight into knockout reactions from the two-proton halo nucleus Ne17

F. Wamers et al.

Phys. Rev. C 109, 054602 (2024) - Published 3 May, 2024

Tunable-fidelity wave functions for the ab initio description of scattering and reactions

Konstantinos Kravvaris, Sofia Quaglioni, and Petr Navrátil

Phys. Rev. C 109, 054603 (2024) - Published 6 May, 2024

Microscopic study of deformation and orientation effects in heavy-ion reactions above the Coulomb barrier using the Boltzmann-Uehling-Uhlenbeck model

Yujie Feng, Huizi Liu, Yingge Huang, Fuchang Gu, Erxi Xiao, Xin Lei, Hui Wang, Jiali Huang, Long Zhu, and Jun Su

Phys. Rev. C 109, 054604 (2024) - Published 7 May, 2024

Total fusion cross section in Li6+Be9 collisions

U. Umbelino, R. Lichtenthäler Filho, O. C. B. Santos, K. C. C. Pires, A. S. Serra, and A. Lépine-Szily

Phys. Rev. C 109, 054605 (2024) - Published 7 May, 2024

Barrier penetration in a discrete-basis formalism

G. F. Bertsch and K. Hagino

Phys. Rev. C 109, 054606 (2024) - Published 7 May, 2024

Role of deformations and orientation effects in binary and ternary decay of the Cf252 nucleus

Chahat Jindal and Manoj K. Sharma

Phys. Rev. C 109, 054607 (2024) - Published 7 May, 2024

Systematic optical potentials for reactions with cluster-structured nuclei

L. Garrido-Gómez, A. Vegas-Díaz, J. P. Fernández-García, and M. A. G. Alvarez

Phys. Rev. C 109, 054608 (2024) - Published 8 May, 2024

Improved Wong and classical approximations, and reduction of fusion data

L. F. Canto, V. A. B. Zagatto, J. Lubian, and R. Donangelo

Phys. Rev. C 109, 054609 (2024) - Published 9 May, 2024

Comprehensive estimation of nuclide production cross sections using a phenomenological approach

Hiroki Iwamoto, Shin-ichiro Meigo, and Kenta Sugihara

Phys. Rev. C 109, 054610 (2024) - Published 9 May, 2024

Assessing the impact of nuclear mass models on the prediction of synthesis cross sections for superheavy elements

Chang Geng, Peng-Hui Chen, Fei Niu, Zu-Xing Yang, Xiang-Hua Zeng, and Zhao-Qing Feng

Phys. Rev. C 109, 054611 (2024) - Published 9 May, 2024

Shell effects on the drift and fluctuation in multinucleon transfer reactions

Zehong Liao, Zepeng Gao, Yu Yang, Long Zhu, and Jun Su

Phys. Rev. C 109, 054612 (2024) - Published 13 May, 2024

Semiclassical treatment of photon cascades in nuclei

Jørgen Randrup and Thomas Døssing

Phys. Rev. C 109, 054613 (2024) - Published 13 May, 2024

Pauli resonance states in light nuclei: How they appear and how they can be eliminated

N. Kalzhigitov and V. S. Vasilevsky

Phys. Rev. C 109, 054614 (2024) - Published 14 May, 2024

Experimental search for toroidal high-spin isomers in collisions of Si28+C12 at 35 MeV/nucleon with the Forward Array Using Silicon Technology

A. Hannaman, B. Harvey, A. B. McIntosh, K. Hagel, A. Abbott, A. Fentress, J. Gauthier, T. Hankins, Y.-W. Lui, L. McCann, L. A. McIntosh, S. Regener, R. Rider, S. Schultz, M. Q. Sorensen, J. Tobar, Z. N. Tobin, and S. J. Yennello

Phys. Rev. C 109, 054615 (2024) - Published 16 May, 2024

High-energy neutron emission in thermal neutron-induced fission of U235

Martin Schulc, Michal Kostal, Roberto Capote, Jan Simon, Evzen Novak, and Tomas Czakoj

Phys. Rev. C 109, 054616 (2024) - Published 20 May, 2024

Measurement of fragment-correlated γ-ray emission from Cf252(sf)

Stefano Marin, Ivan A. Tolstukhin, Nathan P. Giha, Fredrik Tovesson, Vladimir Protopopescu, and Sara A. Pozzi

Phys. Rev. C 109, 054617 (2024) - Published 20 May, 2024

Effect of the charge asymmetry and orbital angular momentum in the entrance channel on the hindrance to complete fusion

Elzod Khusanov, Avazbek Nasirov, and Mukhtorali Nishonov

Phys. Rev. C 109, 054618 (2024) - Published 21 May, 2024

Effects of incompressibility K0 in heavy-ion collisions at intermediate energies

Xiao-Xiao Long and Gao-Feng Wei

Phys. Rev. C 109, 054619 (2024) - Published 21 May, 2024

First measurement in a magnetic confinement fusion experiment of the H3+H3He5+n intermediate two-body resonant reaction

B. Eriksson, S. Conroy, G. Ericsson, J. Eriksson, A. Hjalmarsson, C. R. Brune, M. Gatu Johnson, M. Nocente, S. Fugazza, and M. Rebai

Phys. Rev. C 109, 054620 (2024) - Published 23 May, 2024

This work reports the first experimental measurements made at a magnetic confinement fusion device (JET) of the T+Tα+2n reaction, indicating the presence of an intermediate 5He state in the two-body resonant reaction T+T5He+n. Such measurements, in which two tritium nuclei (3H or T) fuse into helium (4He or α), are relevant for modeling the neutron emission spectrum and estimating fuel content and confinement characteristics for magnetic confinement fusion. The results are also relevant for solar physics, as the mirror reaction 3He+3He4He+2p plays a role in the proton-proton chain of solar fusion.

“Soft” interaction parameter sets in the extended quantum molecular dynamics model

Chen-Zhong Shi (施晨钟), Xiang-Zhou Cai (蔡翔舟), Bo-Song Huang (黄勃松), and Yu-Gang Ma (马余刚)

Phys. Rev. C 109, 054621 (2024) - Published 29 May, 2024

Elastic pC12 scattering calculations using a cluster effective field theory

Eun Jin In, Tae-Sun Park, Young-Ho Song, and Seung-Woo Hong

Phys. Rev. C 109, 054622 (2024) - Published 29 May, 2024

Extended Skyrme effective interactions for transport models and neutron stars

Si-Pei Wang, Rui Wang, Jun-Ting Ye, and Lie-Wen Chen

Phys. Rev. C 109, 054623 (2024) - Published 29 May, 2024

Extended Skyrme momentum-dependent potential in asymmetric nuclear matter and transport models

Junping Yang, Xiang Chen, Ying Cui, Yangyang Liu, Zhuxia Li, and Yingxun Zhang

Phys. Rev. C 109, 054624 (2024) - Published 30 May, 2024

Tractable T-matrix model for reaction processes in muon-catalyzed fusion (dtμ)J=v=0α+n+μ+17.6 MeV or (αμ)nl+n+17.6 MeV

Qian Wu and Masayasu Kamimura

Phys. Rev. C 109, 054625 (2024) - Published 31 May, 2024

At low temperatures (10–1000 K), negative muons injected into a mixture of deuterium (D) and tritium (T) can catalyze the d+t fusion reaction into helium, which yields a neutron and 17.6 MeV energy. Following the catalyzed reaction, free muons can facilitate another fusion reaction, leading to a cyclic reaction known as muon-catalyzed fusion (μCF), a potential candidate for energy production. μCF has recently regained considerable research interest owing to several new developments and applications. For the nuclear reaction processes, the authors provide an elegant alternative to more complicated coupled-channels (CC) models (Kamimura et al., PRC 107, 034607) by replacing in the transition matrix the exact three-body wave function with a solution that uses a tailored d-t optical potential. The calculated results reproduce well those of the full CC calculations, and the proposed tractable transition-matrix model promises applications to other μCF systems. The predicted low-energy negative muon spectrum will also be useful for the generation of an ultraslow negative muon beam by utilizing the μCF for various applications, such as a scanning negative muon microscope and an injection source for the muon collider.

Relativistic Nuclear Collisions

Medium modification of pion production in low-energy Au+Au collisions

C. Kummer, K. Gallmeister, and L. von Smekal

Phys. Rev. C 109, 054901 (2024) - Published 2 May, 2024

Bulk properties of the system formed in U+U collisions at sNN=2.12 GeV using the jet AA microscopic transport model

Aswini Kumar Sahoo, Xionghong He, Yasushi Nara, and Subhash Singha

Phys. Rev. C 109, 054902 (2024) - Published 3 May, 2024

Elliptic and triangular flow of charmonium states in heavy ion collisions

Sungtae Cho

Phys. Rev. C 109, 054904 (2024) - Published 6 May, 2024

Energy hierarchies governing quarkonium dynamics in heavy ion collisions

Rishi Sharma and Balbeer Singh

Phys. Rev. C 109, 054905 (2024) - Published 8 May, 2024

Asymmetric jet shapes with two-dimensional jet tomography

Yu-Xin Xiao, Yayun He, Long-Gang Pang, Hanzhong Zhang, and Xin-Nian Wang

Phys. Rev. C 109, 054906 (2024) - Published 9 May, 2024

Baryon-density dependence of viscosities of the quark-gluon plasma at hadronization

Zhidong Yang, Yifeng Sun, and Lie-Wen Chen

Phys. Rev. C 109, 054907 (2024) - Published 9 May, 2024

Measurement of forward charged hadron flow harmonics in peripheral PbPb collisions at sNN=5.02TeV with the LHCb detector

R. Aaij et al. (LHCb Collaboration)

Phys. Rev. C 109, 054908 (2024) - Published 15 May, 2024

Spin relaxation rate for baryons in a thermal pion gas

Yoshimasa Hidaka, Masaru Hongo, Mikhail A. Stephanov, and Ho-Ung Yee

Phys. Rev. C 109, 054909 (2024) - Published 16 May, 2024

Identified charged-hadron production in p+Al, He3+Au, and Cu+Au collisions at sNN=200GeV and in U+U collisions at sNN=193GeV

N. J. Abdulameer et al. (PHENIX Collaboration)

Phys. Rev. C 109, 054910 (2024) - Published 20 May, 2024

Speed of sound in magnetized nuclear matter

Rajkumar Mondal, Nilanjan Chaudhuri, Pradip Roy, and Sourav Sarkar

Phys. Rev. C 109, 054911 (2024) - Published 22 May, 2024

Hadronization of heavy quarks

Jiaxing Zhao, Jörg Aichelin, Pol Bernard Gossiaux, Andrea Beraudo, Shanshan Cao, Wenkai Fan, Min He, Vincenzo Minissale, Taesoo Song, Ivan Vitev, Ralf Rapp, Steffen Bass, Elena Bratkovskaya, Vincenzo Greco, and Salvatore Plumari

Phys. Rev. C 109, 054912 (2024) - Published 24 May, 2024

Exploring freeze-out and flow using exact solutions of conformal hydrodynamics

Owen Bradley and Christopher Plumberg

Phys. Rev. C 109, 054913 (2024) - Published 28 May, 2024

The modeling of relativistic collisions of nuclei is typically performed by numerically solving the equations of relativistic hydrodynamics. In a few rare cases, exact solutions to these equations exist. The authors derive two novel exact solutions which practitioners may use to verify their hydrodynamics algorithms. The work highlights the importance of an accurate description of the freeze-out configuration in systems characterized by large transverse and longitudinal flows and in collisions with large flow gradients, particularly in small systems.

Hadronic Physics and QCD

Evaluation of the E2/M1 ratio in the NΔ(1232) transition from the γppπ0 reaction

E. Mornacchi et al. (A2 Collaboration at MAMI)

Phys. Rev. C 109, 055201 (2024) - Published 6 May, 2024

The transition from the nucleon to the Δ(1232) resonance is a sensitive test for models of the nucleon structure. A magnetic dipole (M1) quark spin-flip transition essentially dominates photoexcitation of the Δ, but smaller components in the nucleon and Δ wave functions allow also electric quadrupole (E2) contributions. The ratio E2/M1 then provides fundamental information on both the spatial deformation of the nucleon or Δ, and on the corresponding D states in their quark-model wave functions. The authors measured the E2/M1 ratio via single π0 production from the proton with a circularly polarized photon beam and a longitudinally polarized proton target, exploiting the presence of interference terms between the measured amplitudes that enhance the effect of smaller contributions. This most precise experimental result to date for the E2/M1 ratio gives deep insight into the nucleon properties and provides a precision benchmark for all nonperturbative QCD models.

Nucleonic models at finite temperature with in-medium effective fields

Odilon Lourenço, Mariana Dutra, and Jérôme Margueron

Phys. Rev. C 109, 055202 (2024) - Published 13 May, 2024

Nonrelativistic trace anomaly and equation of state in dense fermionic matter

Hiroyuki Tajima, Kei Iida, and Haozhao Liang

Phys. Rev. C 109, 055203 (2024) - Published 14 May, 2024

QCD analysis of xF3 structure functions in deep-inelastic scattering: Mellin transform with Gegenbauer polynomials up to N3LO approximation

Fatemeh Arbabifar, Nader Morshedian, Leila Ghasemzadeh, and Shahin Atashbar Tehrani

Phys. Rev. C 109, 055204 (2024) - Published 20 May, 2024

Deep exclusive meson production as a probe to the puzzle of Λ hyperon polarization

Zhoudunming Tu

Phys. Rev. C 109, 055205 (2024) - Published 28 May, 2024

Chiral condensate and the equation of state at nonzero baryon density from the hadron resonance gas model with a repulsive mean field

Deeptak Biswas, Peter Petreczky, and Sayantan Sharma

Phys. Rev. C 109, 055206 (2024) - Published 28 May, 2024

Electroweak Interaction, Symmetries

Half-life of Ge71 and the gallium anomaly

E. B. Norman, A. Drobizhev, N. Gharibyan, K. E. Gregorich, Yu. G. Kolomensky, B. N. Sammis, N. D. Scielzo, J. A. Shusterman, and K. J. Thomas

Phys. Rev. C 109, 055501 (2024) - Published 30 May, 2024

Several past experiments such as SAGE, GALLEX, and BEST reported lower than expected neutrino capture rates on 71Ga. The origin of this so-called “gallium anomaly” could potentially indicate new neutrino physics, unless there was a more mundane explanation. Because the measured half-life of the electron-capture decay of 71Ge can be used to calculate the neutrino-capture cross section on 71Ga, the authors carried out three separate measurements to determine the half-life of 71Ge with high precision. Their new result of 11.468±0.008 days for the 71Ge half-life is consistent with the currently accepted value, but significantly more precise. It rules out an unexpectedly long 71Ge half-life as a potential explanation of the puzzling anomaly, leaving the anomaly’s origin an open question.

Nuclear Astrophysics

Compiled properties of nucleonic matter and nuclear and neutron star models from nonrelativistic and relativistic interactions

Boyang Sun, Saketh Bhattiprolu, and James M. Lattimer

Phys. Rev. C 109, 055801 (2024) - Published 3 May, 2024

Unified equations of state for cold nonaccreting neutron stars with Brussels-Montreal functionals. V. Improved parametrization of the nucleon density distributions

N. N. Shchechilin, N. Chamel, J. M. Pearson, A. I. Chugunov, and A. Y. Potekhin

Phys. Rev. C 109, 055802 (2024) - Published 3 May, 2024

Isospin equilibration in neutron star mergers

Mark G. Alford, Alexander Haber, and Ziyuan Zhang

Phys. Rev. C 109, 055803 (2024) - Published 8 May, 2024

Electrical conductivity of a warm neutron star crust in magnetic fields: Neutron-drip regime

Arus Harutyunyan, Armen Sedrakian, Narine T. Gevorgyan, and Mekhak V. Hayrapetyan

Phys. Rev. C 109, 055804 (2024) - Published 22 May, 2024

Constraints on the isovector properties of finite nuclei from neutron star observations

M. Divaris, A. Kanakis-Pegios, and Ch. C. Moustakidis

Phys. Rev. C 109, 055805 (2024) - Published 23 May, 2024

ERRATA

Erratum: Accurate nuclear radii and binding energies from a chiral interaction [Phys. Rev. C 91, 051301(R) (2015)]

A. Ekström, G. R. Jansen, K. A. Wendt, G. Hagen, T. Papenbrock, B. D. Carlsson, C. Forssén, M. Hjorth-Jensen, P. Navrátil, and W. Nazarewicz

Phys. Rev. C 109, 059901 (2024) - Published 9 May, 2024

Erratum: Near-threshold resonances in C11 and the B10(p,α)Be7 aneutronic reaction [Phys. Rev. C 107, L021305 (2023)]

J. Okołowicz, M. Płoszajczak, and W. Nazarewicz

Phys. Rev. C 109, 059902 (2024) - Published 20 May, 2024

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