We study the productions of $\mathrm{\Lambda }$-hypernuclei ${}_{\mathrm{\Lambda }}{}^3\mathrm{H}$, ${}_{\mathrm{\Lambda }}{}^4\mathrm{H}$, and ${}_{\mathrm{\Lambda }}{}^4\mathrm{He}$ in the coalescence mechanism in Au-Au collisions at $\sqrt{s_{NN}}=3$ GeV. Considering the abundance and great importance of baryons and light (hyper-)nuclei on the collision dynamics, we include not only $\mathrm{nucleon}+\mathrm{\Lambda }$ coalescence but also $\mathrm{nucleus}+\mathrm{nucleon}\left(\mathrm{\Lambda }\right)$ coalescence. We present contributions from different coalescence channels for ${}_{\mathrm{\Lambda }}{}^3\mathrm{H}$, ${}_{\mathrm{\Lambda }}{}^4\mathrm{H}$, and ${}_{\mathrm{\Lambda }}{}^4\mathrm{He}$ in their productions. We predict the production asymmetry between ${}_{\mathrm{\Lambda }}{}^4\mathrm{H}$ and ${}_{\mathrm{\Lambda }}{}^4\mathrm{He}$, characterized by yield ratios ${}_{\mathrm{\Lambda }}{}^4\mathrm{He}/{}_{\mathrm{\Lambda }}{}^4\mathrm{H}$ and $({}_{\mathrm{\Lambda }}{}^4\mathrm{H}-{}_{\mathrm{\Lambda }}{}^4\mathrm{He})/({}_{\mathrm{\Lambda }}{}^4\mathrm{H}+{}_{\mathrm{\Lambda }}{}^4\mathrm{He})$, which can shed light on the existence constraints of the possible neutron-$\mathrm{\Lambda }$ bound states ${}_{\mathrm{\Lambda }}{}^{2}n\left(n\mathrm{\Lambda }\right)$ and ${}_{\mathrm{\Lambda }}{}^{3}n\left(nn\mathrm{\Lambda }\right)$.

Symmetric cumulants can improve our understanding of the joint probability distribution function $P(v_m,v_n,v_k,\cdots ,{\mathrm{\Psi }}_m,{\mathrm{\Psi }}_n,{\mathrm{\Psi }}_k,\cdots )$, potentially offering new insights into the nature of the fluctuations of the quark-gluon plasma produced in relativistic heavy-ion collisions. In this work, the four-particle symmetric cumulants $s{c}_{2,3}\left\{4\right\}$, six-particle symmetric cumulants $s{c}_{2,3,4}\left\{6\right\}$, and the normalized cumulants $ns{c}_{2,3}\left\{4\right\}$ and $ns{c}_{2,3,4}\left\{6\right\}$ originating from transverse momentum conservation, collective flow, and the interplay between the two effects are calculated. Our results on $s{c}_{2,3}\left\{4\right\}$ are consistent with the ATLAS data using the subevent cumulant method, facilitating a more profound understanding of the origins of the symmetric cumulant in small systems. Our results on $s{c}_{2,3,4}\left\{6\right\}$ serve as theoretical predictions for future experimental measurements in small systems.

Relativistic mean-field models (RMF) based on the exchange of $\sigma ,\omega$, and $\rho$ mesons including nonlinear nucleon-$\sigma$ couplings and density-dependent $\rho$ coupling, are considered. A large set of models is generated using the Markov chain Monte Carlo approach and Bayesian statistics to reproduce nuclear physics knowledge encoded in terms of the nuclear empirical parameters and $\chi \mathrm{EFT}$ predictions for low-density neutron matter. These models are filtered, in a second step, using astrophysical constraints: the tidal deformability obtained from GW170817 parameter estimation and the observational masses deduced from radioastronomy. We then obtain a set of selected RMF models that are compatible with present nuclear and astrophysical constraints and that can be employed to make predictions and to quantity their uncertainties. Predictions for masses and radii are compared to NICER masses-radii analyses for PSR $\mathrm{J}0030+0451$ and PSR $\mathrm{J}0740+6620$. We find that RMF models can be made soft enough to predict low values for neutron star radii compatible with GW170817 and, at larger densities, stiff enough to be compatible with NICER analyses for massive neutron stars. Our models can also reach large values for the maximum mass, up to $2.6M_{\odot }$. In addition, for the core composition, we obtain a large distribution of the proton fraction for canonical mass neutron stars, some of them allowing the direct URCA fast cooling process. For massive neutron stars, however, most of our models suggest a large proton fraction in the core allowing direct URCA fast cooling process.

Angular correlations for low-energy neutron-induced $\gamma$ reactions are calculated using nuclear reaction formalism for multilevel neutron capture with arbitrary multiplicities of $\gamma$ transitions. We confirm previous calculations [V. V. Flambaum and O. P. Sushkov, Nucl. Phys. A 435, 352 (1985)] for dipole transitions obtained with different formalism. The possible applications of n-$\gamma$ correlations for studies of symmetry violations and electromagnetic transitions are discussed.

To understand X-ray burst light curves, it is important to understand the trigger reactions that transition the hot-CNO (HCNO) cycles to full explosive burning via the $\alpha p$ and $rp$ processes in these extreme astrophysical environments. One hypothesized breakout path is initiated through the ${}^{14}\mathrm{O}(\alpha ,p){}^{17}\mathrm{F}$ reaction that has long been speculated to proceed through an important resonance corresponding to a $1^{-}$ level at 6.15 MeV in ${}^{18}\mathrm{Ne}$. There are discrepant reports in the literature concerning the properties of this level, and therefore a new study of the ${}^{17}\mathrm{F}(p,p^{\prime }){}^{17}\mathrm{F}$* and ${}^{17}\mathrm{F}(p,p){}^{17}\mathrm{F}$ reactions in inverse kinematics was performed. Proton branching ratios populating both the ground and first excited states of ${}^{17}\mathrm{F}$ were found to be consistent with the latter of the two measurements.

Background: Some of the computational limitations in solving the nuclear many-body problem could be overcome by utilizing quantum computers. The nuclear shell-model calculations providing deeper insights into the properties of atomic nuclei are one such case with high demand for resources, as the size of the Hilbert space grows exponentially with the number of particles involved. Quantum algorithms are being developed to overcome these challenges and advance such calculations.

Purpose: To develop quantum circuits for the nuclear shell-model, leveraging the capabilities of noisy intermediate-scale quantum (NISQ) devices. We aim to minimize resource requirements (specifically in terms of qubits and gates) and strive to reduce the impact of noise by employing relevant mitigation techniques.

Methods: We achieve noise resilience by designing an optimized Ansatz for the variational quantum eigensolver (VQE) based on Givens rotations and incorporating qubit-ADAPT-VQE in combination with variational quantum deflation (VQD) to compute ground and excited states, incorporating the zero-noise extrapolation mitigation technique. Furthermore, the qubit requirements are significantly reduced by mapping the basis states to qubits using Gray-code encoding and generalizing transformations of fermionic operators to efficiently represent many-body states.

Results: By employing the resource-efficient protocols, we achieve the ground and excited state energy levels of ${}^{38}\mathrm{Ar}$ and ${}^6\mathrm{Li}$ with better accuracy. These energy levels are presented for noiseless simulations, noisy conditions, and after applying noise mitigation techniques. Results are compared for Jordan-Wigner and Gray-code encoding using VQE, qubit-ADAPT-VQE, and VQD.

Conclusions: Our work highlights the potential of resource-efficient protocols to leverage the full potential of NISQ devices in scaling the nuclear shell model calculations, offering a pathway toward more complex quantum simulations in nuclear physics. This approach establishes a framework for studying other nuclear systems with improved quantum resource efficiency, marking a significant advancement in applying quantum computing to realistic nuclear physics applications.

The pairing effects on the $g$ factor of chiral doublets in the $\pi {\left(1h_{11/2}\right)}^1\otimes \nu {\left(1h_{11/2}\right)}^{-1}$ configuration are investigated using the particle rotor model. The results show that the $g$ factors of yrast and yrare bands decrease with increasing neutron pairing gap ${\mathrm{\Delta }}_n$. At the bandhead ($I=9\hslash$), the $g$ factor is decreasing for the yrast state and increasing for the yrare state as the triaxial deformation parameter $\gamma$ increases. The $g$ factor varies with spin $I$ based on $\gamma$: for $\gamma <{30}^{\circ }$, it increases then decreases; for $\gamma >{30}^{\circ }$, it decreases then increases. A kink in the yrast band's $g$ factor may signal aplanar rotation. These trends are linked to the proton (${\mathit{j}}_p$), neutron (${\mathit{j}}_n$), and total ($\mathit{I}$) angular momenta and their effective angles ${\theta }_{pI}$ and ${\theta }_{nI}$. An increase in the short (long) axis component of $\mathit{I}$ reduces ${\theta }_{pI}$ (${\theta }_{nI}$), increasing (decreasing) the $g$ factor with spin. Moreover, the ${\theta }_{nI}$ is reduced by ${\mathrm{\Delta }}_n$ and results in smaller $g$ factor.

Calculations to reconstruct rotational level patterns in the ${}^{220}\mathrm{Rn}$ and ${}^{226}\mathrm{Ra}$ nuclei have been performed using a collective quadrupole$+$octupole approach with microscopic mass tensor and moments of inertia dependent on deformation and pairing degrees of freedom. The main objective is to quantitatively confirm the known experimental observations that the Rn nucleus passes from octupole vibrational to octupole deformed with increasing rotation frequency, while the Ra nucleus is relatively weakly affected by collective rotation, being octupole deformed from the beginning. The collective potential in a nine-dimensional collective space is determined using the macroscopic-microscopic method with Strutinsky and the BCS with an approximate particle number projection microscopic corrections. The corresponding Hamiltonian is diagonalized based on the projected solutions of the harmonic oscillators coupled with Wigner functions. Such an orthogonalized basis is additionally symmetrized with respect to the so-called intrinsic symmetrization group, specifically dedicated to the collective space used, to ensure the uniqueness of the Hamiltonian eigensolutions in the laboratory frame. The response of the pairing and deformation degrees of freedom to external rotation is discussed in the variational approach, where the total energy is minimized by the deformation and pairing variables. As the nuclear spin increases, the pairing gaps of protons and neutrons decrease from its ground-state equilibrium values to zero (no superfluid solution). Consequently, the corresponding microscopic moments of inertia increase with collective spin (Coriolis antiparing effect), resulting in effectively lower rotational energy levels $I^{\pi }$ with respect to pure classical-rotor pattern $I(I+1)$. The expression for cranking microscopic moments of inertia allows to discuss the rotational Hamiltonian term as depending on the nuclear structure. The effect of vibrations of the pairing field is considered only on average by introducing a multiplicative constant factor to rescale the moment of inertia values. The obtained comparison of experimental and theoretical rotational energy level schemes, dipole, quadrupole, and octupole transition probabilities of $B\left(E\lambda \right)$ in ${}^{220}\mathrm{Rn}$ and ${}^{226}\mathrm{Ra}$ is satisfactory.

Background: The advent of high-intensity, high-polarization electron beams led to significantly improved measurements of the ratio of the proton’s charge to electric form factors, $G_{Ep}/G_{Mp}$. However, high-$Q^2$ measurements of this ratio yielded significant disagreement with extractions based on unpolarized scattering measurements, raising questions about the reliability of the measurements and consistency of the techniques.

Purpose: Jefferson Lab experiment E01-001 was designed to provide a high precision extraction of $G_{Ep}/G_{Mp}$ from unpolarized cross-section measurements using a modified version of the Rosenbluth separation technique to allow for a more precise comparison with polarization data.

Method: Rosenbluth separations involve precise measurements of the angular dependence of the elastic $e\text{−}p$ cross section at fixed momentum transfer, $Q^2$. Conventional Rosenbluth separations detect the scattered electron, requiring the comparisons of measurements with very different detected electron energy and rate for electrons at different angles. Our ‘‘super-Rosenbluth’’ measurement detected the struck proton, rather than the scattered electron to extract the elastic $e\text{−}p$ cross section. This yielded a fixed momentum for the detected particle and dramatically reduced variation of the cross section with angle, significantly reducing rate- and momentum-dependent corrections and uncertainties.

Results: We measure the cross section vs angle with high relative precision, allowing for extremely high precision extractions of $G_{Ep}/G_{Mp}$ at $Q^2$ = 2.64, 3.20, and $4.10{\mathrm{GeV}}^2$. Our results are consistent with traditional Rosenbluth extractions, but with much smaller corrections and systematic uncertainties, comparable to the uncertainties from polarization measurements.

Conclusions: Our data confirm the discrepancy between Rosenbluth and polarization extractions of the proton form factor ratio using an improved Rosenbluth extraction that yields smaller and less-correlated uncertainties than those typical of previous Rosenbluth extractions. We compare our results to calculations of two-photon exchange effects and find that the observed discrepancy can be relatively well explained by such effects.

Hyperon recoil polarization measurements for the exclusive electroproduction of $K^{+}\mathrm{\Lambda }$ and $K^{+}{\mathrm{\Sigma }}^0$ final states from an unpolarized proton target have been carried out using the CLAS12 spectrometer at Jefferson Laboratory. The measurements at beam energies of 6.535 and 7.546 GeV span the range of four-momentum transfer $Q^2$ from 0.3 to $4.5{\mathrm{GeV}}^2$ and invariant mass $W$ from 1.6 to 2.4 GeV, while covering the full center-of-mass angular range of the $K^{+}$. These new $\mathrm{\Lambda }$ polarization observables extend the existing data in a similar kinematic range but from a significantly larger dataset. However, they represent the first electroproduction measurements of this observable for the ${\mathrm{\Sigma }}^0$. These data will allow for better exploration of the reaction mechanism in strangeness production, for further understanding of the spectrum and structure of excited nucleon states that couple to $KY$, and for improved insight into the strong interaction in the nonperturbative domain.

A direct measurement of the ground-state-to-ground-state electron-capture decay $Q$ ($Q_{\mathrm{EC}}$) value of ${}^{97}\mathrm{Tc}$ has been conducted employing the high-resolving-power phase-imaging ion-cyclotron-resonance technique with the double Penning trap mass spectrometer JYFLTRAP. The resulting $Q_{\mathrm{EC}}$ value for ${}^{97}\mathrm{Tc}$ is 324.82(21) keV, exhibiting a precision approximately 19 times higher than the value adopted in the newest Atomic Mass Evaluation (AME2020) and differing by $1.2\sigma$. Furthermore, by combining this refined $Q$ value with nuclear energy-level data for the decay-daughter ${}^{97}\mathrm{Mo}$, a potential ultralow $Q$-value transition ${}^{97}\mathrm{Tc}$ ($9/2^{+}$, ground state) $\to {}^{97}\mathrm{Mo}^{*}$ [320(1) keV] was detected. The ground-state-to-excited-state electron-capture decay $Q$ value ($Q_{\mathrm{EC}}^{*}$) of this transition was determined to be 4.8(10) keV, confirming it to be energetically allowed with a confidence level of exceeding $4\sigma$. The captures of electrons occupying the L and higher shells for this transition are energetically allowed, giving a value of 2.0(10) keV for the closest distance of $Q_{\mathrm{EC}}^{*}$ to the allowed binding energy of the L1 shell. To predict partial half-lives and energy-release distributions for this transition, the atomic self-consistent many-electron Dirac-Hartree-Fock-Slater method and the nuclear shell model have been employed. Dominant correction terms such as exchange and overlap corrections, as well as shake-up and shake-off effects, were included in the final results. Moreover, in the case of a possible allowed transition, the normalized distribution of released energy in the electron-capture decay of ${}^{97}\mathrm{Tc}$ to the excited 320-keV state of ${}^{97}\mathrm{Mo}$, is compared with that of ${}^{163}\mathrm{Ho}$, which is being used for electron-neutrino-mass determination. A pseudoexperiment technique was introduced to calculate error propagation in half-life and the 68% confidence interval for normalized energy distributions.

The sound velocity in homogeneous matter has fundamental significance as it relates to the stiffness of the equation of state of compact star matter. In this work, we investigate the density evolution of the sound velocity in homogeneous neutron matter at zero temperature by using an effective field theory implemented with a conformal compensator—the nonlinear realization of scale symmetry—regarded as the source of the lightest scalar meson. We find that the peak of sound velocity emerges naturally in the intermediate density region, $(1–2.5)n_0$, without resorting to any transitions from hadron to exotic configurations or introducing new degrees of freedom. This phenomenon is not found in the Walecka-type models where the sigma meson is included in the linear-type approach, therefore it is an intrinsic character of the dilaton compensator approach through the matching of the QCD trace anomaly; a mechanism has not been found before, and it connects to the character of the lightest scalar meson. In addition, these observations shed light on how the hidden scale symmetry manifests in the nuclear medium from the unitarity limit in dilute matter to the dilaton limit in compact star matter.

The proton drip line of (hyper)nuclei is examined within the framework of the deformed Skyrme-Hartree-Fock approach by adjusting the nuclear force parameters to exactly reproduce the core binding energies. The impact of adding a $\mathrm{\Lambda }$ hyperon in an $s$ or $p$ state is studied, and it is found that in some cases the deformation effect facilitates the extension of the drip line by an added $p$-state hyperon. However, no extension of the drip line is found for $s$-state hypernuclei.

The unbound nucleus ${}^{18}\mathrm{Na}$, acting as an intermediate nucleus in the sequential decay of ${}^{19}\mathrm{Mg}$, is situated beyond the proton drip line. We employ the coupled-channel Gamow shell model (GSM-CC) to investigate the properties of ${}^{18}\mathrm{Na}$, as well as the ${}^{17}\mathrm{Ne}(p,p)$ cross section. GSM-CC treats the nucleus as an open quantum system and provides a unified framework for studying both nuclear structure and reaction cross sections. Our calculations reproduce the energies and partial decay widths of low-lying states in ${}^{18}\mathrm{Na}$, as well as the ${}^{17}\mathrm{Ne}(p,p)$ cross section. Additionally, the mirror nucleus ${}^{18}\mathrm{N}$ is also described. The isospin symmetry breaking induced by the Coulomb interaction and continuum coupling is clearly obtained in our description of ${}^{18}\mathrm{Na}$ and ${}^{18}\mathrm{N}$ properties, arising from the extended $s_{1/2}$ partial wave. The isospin symmetry breaking in the ${}^{18}\mathrm{Na}/{}^{18}\mathrm{N}$ pair is compared to that occurring in the mirror pair ${}^{16}\mathrm{F}/{}^{16}\mathrm{N}$, whereby similarities and differences are analyzed.

A cross section deficit phenomenon has been observed in ${}^{12}\mathrm{C}+{}^{12}\mathrm{C}$ fusion reactions at astrophysical energies, at which fusion cross sections are suppressed in the off-resonance regions as compared to fusion cross sections for the ${}^{12}\mathrm{C}+{}^{13}\mathrm{C}$ system. I here construct a simple schematic model which simulates this phenomenon. The model consists of a random matrix Hamiltonian based on the Gaussian orthogonal ensemble (GOE), which is coupled to an entrance channel Hamiltonian in the discrete basis representation. I show that the transmission coefficients are almost unity when both the level density and the decay widths of the GOE configurations are large, realizing the strong absorption regime. On the other hand, when these parameters are small, the transmission coefficients are significantly structured as a function of energy. In that situation, the transmission coefficients at resonance energies reach unity in this model, which is consistent with the experimental finding of the cross section deficit.

The interaction between deuterons ($d\text{−}d$) is pivotal for understanding the characteristics of certain light nuclei from the perspective of the deuteron cluster and achieving a precise reproduction of $d\text{−}d$ fusion cross sections. In this work, we construct a set of elastic $d\text{−}d$ interactions by fitting the phase shifts using potentials parameterized in a Woods-Saxon shape. Then the correlation functions are calculated with the obtained potential and compared with recent measurements by the STAR collaboration. We find that the $d\text{−}d$ phase shifts and the correlation functions are internally consistent, confirming that correlation functions can provide a cross-check for the $d\text{−}d$ interaction. In addition, both the ${}^1{S}_0$ bound state and the repulsive ${}^5{S}_2$ interaction contribute to the observed suppression in the measured correlation function. Moreover, we demonstrate that the $P$-wave contribution of the correlation functions cannot be neglected, especially in determining the source size.

Background: Most actinide nuclides fission asymmetrically. A common explanation was that this division benefited from leading to fragments in the vicinity of the doubly magic ${}^{132}\mathrm{Sn}$. It was tacitly assumed that lighter nuclides would all fission symmetrically because a similar situation could not occur there. However, a weakly asymmetric mass distribution was found for some preactinides at energies about 10 MeV above the fission saddle point by Itkis et al. [Yad. Fiz. 52, 944 (1990)] and Mulgin et al. [Nucl. Phys. A 640, 375 (1998)]. A more recent experiment by Andreyev et al. performed in June 2008 [Andreyev et al., Phys. Rev. Lett. 105, 252502 (2010)] showed a strongly asymmetric mass distribution in fission of ${}^{180}\mathrm{Hg}$ at low excitation energies. This gave rise to a new focus on fission properties in the “below Pb” region. Möller and Randrup presented a comprehensive calculation, based on the Brownian shape-motion (BSM) method, of fission-fragment charge distributions [P. Möller and J. Randrup, Phys. Rev. C 91, 044316 (2015)] which obtained that “a new region of asymmetry” appeared for approximately $95\le N\le 115$ and $75\le Z\le 94$. Available experimental results at the time, except for the observation of symmetric fission of ${}^{187}\mathrm{Ir}$ by Itkis et al. [Yad. Fiz. 52, 944 (1990)], agreed with these predictions apart for minor differences in the transition regions between predicted symmetric and asymmetric fission. It was argued [P. Möller and J. Randrup, Phys. Rev. C 91, 044316 (2015)] that the inaccurate results for ${}^{187}\mathrm{Ir}$ were related to inaccuracies in the calculated potential-energy surface and that such inaccuracies are related to the (in)accuracies of the calculated ground-state masses for the corresponding mass splits.

Purpose: We expand on our previous discussion of a possible source of the difference between the experimental and theoretical fission-fragment mass distributions for ${}^{187}\mathrm{Ir}$ and furthermore investigate if such differences may occur for other fissioning nuclides in the below Pb and actinide regions.

Methods: It has been shown that all structure in the mass distributions obtained by use of the BSM method is entirely due to the structure of the potential-energy surfaces on which the random walks are executed. Therefore, to understand the discrepancy between the previous theoretical results and the experimental observations for ${}^{187}\mathrm{Ir}$ we focus on the accuracy of the calculated potential-energy surface.

Results: We find that in symmetric fission of ${}^{187}\mathrm{Ir}$ the corresponding calculated fragment ground-state masses are too high compared to experiment by about 2.5 MeV each so the scission potential energy is calculated to be too high by 5 MeV. We also find that this is the largest error that can occur for any scission configuration in heavy-element fission.

Conclusions: As earlier we pose that the reason that symmetric fission is not favored in the calculated fission-fragment distribution of ${}^{187}\mathrm{Ir}$ is that the potential-energy surface is overestimated by 5 MeV for symmetric splits. In the calculations a large error for symmetric splits extends only to nuclides a few nucleons beyond ${}^{187}\mathrm{Ir}$ and does not occur elsewhere. Therefore, to test this hypothesis of the origin of the discrepancy, it is of interest to map out in experiments how far this region of symmetric fission “within the predicted region of asymmetry” extends and if substantial discrepancies occur elsewhere.

Background: The nuclear matrix element (NME) is an important quantity in studies of the neutrinoless double beta ($0\nu \beta \beta$) decay, for which the ${}^{76}\mathrm{Ge}$ nucleus is one of the candidate isotopes for direct searches. The NME might be experimentally constrained by heavy-ion double charge exchange (HI-DCE) reaction at relevant energies. However feasibility of the HI-DCE as a tool for the NME requires accurate analyses of the competing multisteps one-nucleon transfers that connects the same initial and final mass partitions.

Purpose: In this work we present the one-proton stripping and one-neutron pickup reactions in the ${}^{20}\mathrm{Ne}+{}^{76}\mathrm{Ge}$ system measured at 15.3 MeV/u. These one-nucleon transfer reactions are used to benchmark the direct reaction and nuclear structure models that will be used to compute the contribution of multinucleon transfers competing with the HI-DCE.

Methods: Experimental data of differential cross sections are compared with coupled reaction channel calculations using spectroscopic amplitudes as obtained from large-scale shell model. The validity of model space and interactions adopted to describe the target and the targetlike nuclei are further checked against (d,p) and (${}^3\mathrm{He}$,d) data available in the literature.

Results: We obtain an overall good description of experimental data for the one-proton stripping and one-neutron pickup transfer in the ${}^{20}\mathrm{Ne}+{}^{76}\mathrm{Ge}$ reactions. We also reproduce the behavior of the cross sections for channels in the ${}^{76}\mathrm{Ge}({}^3\mathrm{He},\mathrm{d}){}^{77}\mathrm{As}$ and the ${}^{76}\mathrm{Ge}\left(\mathrm{p},\mathrm{d}\right){}^{75}\mathrm{Ge}$ data.

Conclusions: The result obtained in this work fills some intermediate one-nucleon transfer steps in the intricate multitransfer paths that compete with the direct meson exchange mechanism for the heavy-ion double charge exchange.