Mon·Jan 3, 2022Monday·January 3, 2022

1. 01*

   Gravitational portals in the early Universe

   Simon Clery🇫🇷 · Yann Mambrini🇫🇷 · Keith A. Olive🇺🇸 · Sarunas Verner🇺🇸

   We consider the production of matter and radiation during reheating after inflation, restricting our attention solely to gravitational interactions. Processes considered are the exchange of a graviton, $h_{\mu \nu }$, involved in the scattering of the inflaton or particles in the newly created radiation bath. In particular, we consider the gravitational production of dark matter (scalar or fermionic) from the thermal bath as well as from scattering of the inflaton condensate. We also consider the gravitational production of radiation from inflaton scattering. In the latter case, we also derive a lower bound on the maximal temperature of order of $10^{12}$ GeV for a typical $\alpha -$attractor scenario from $\varphi \varphi \to h_{\mu \nu }\to$ Standard Model fields (dominated by the production of Higgs bosons). This lower gravitational bound becomes the effective maximal temperature for reheating temperatures, $T_{\mathrm{RH}}\lesssim 10^9$ GeV. The processes we consider are all minimal in the sense that they are present in any non-minimal extension of the Standard Model theory based on Einstein gravity and can not be neglected. We compare each of these processes to determine their relative importance in the production of both radiation and dark matter.

   hep-phastro-ph.COhep-thPRD(2022)·118 citations
2. 02*

   High Precision Calculations of the Higgs Boson Mass

   E. A. Reyes R.🇨🇴 · A. R. Fazio🇨🇴

   In this paper we are going to review the status of the computations of the perturbative quantum corrections to the Higgs boson mass in the Standard Model and in its supersymmetric extensions. In particular, supersymmetric theories require a very accurate computation of the Higgs boson mass, which includes corrections up to even three-loop level, since their predictions are limited by theoretical uncertainties. A discussion about these uncertainties in the context of the minimal and next to minimal supersymmetric standard models is included.

   hep-phParticles(2022)·13 citations
3. 03*

   Improving heavy Dirac neutrino prospects at future hadron colliders using machine learning

   Jie Feng🇨🇳 · Mingqiu Li🇨🇳 · Qi-Shu Yan🇨🇳 · Yu-Pan Zeng🇨🇳 · Hong-Hao Zhang🇨🇳 · Yongchao Zhang🇨🇳 · Zhijie Zhao🇨🇳

   In this work, by using the machine learning methods, we study the sensitivities of heavy pseudo-Dirac neutrino $N$ in the inverse seesaw at the high-energy hadron colliders. The production process for the signal is $pp\to \ell N\to 3\ell +E_T^{\mathrm{miss}}$, while the dominant background is $pp\to WZ\to 3\ell +E_T^{\mathrm{miss}}$. We use either the Multi-Layer Perceptron or the Boosted Decision Tree with Gradient Boosting to analyse the kinematic observables and optimize the discrimination of background and signal events. It is found that the reconstructed $Z$ boson mass and heavy neutrino mass from the charged leptons and missing transverse energy play crucial roles in separating the signal from backgrounds. The prospects of heavy-light neutrino mixing $|V_{\ell N}{|}^2$ (with $\ell =e,\mu$) are estimated by using machine learning at the hadron colliders with $\sqrt{s}=14$ TeV, 27 TeV, and 100 TeV, and it is found that $|V_{\ell N}{|}^2$ can be improved up to $\mathcal{O}(10^{-6})$ for heavy neutrino mass $m_N=100$ GeV and $\mathcal{O}(10^{-4})$ for $m_N=1$ TeV.

   hep-phhep-exJHEP(2022)·7 citations
4. 04*

   Coupled-channel analysis of the process $\gamma \gamma \to {\pi }^0{\pi }^0$

   Yury S. Surovtsev🇷🇺 · Petr Bydžovský🇨🇿 · Thomas Gutsche🇩🇪 · Robert Kamiński🇵🇱 · Valery E. Lyubovitskij🇩🇪 · Miroslav Nagy🇸🇰

   We study the process $\gamma \gamma \to {\pi }^0{\pi }^0$ involving the principle mechanisms, the structure of its cross section and the role of individual isoscalar-tensor resonances in the saturation of its energy spectrum.

   hep-phParticles(2022)·1 citation
5. 05*

   Electroweak Radiative Corrections in Precision LHC Measurements of $W^{\pm }/Z^0$+jets

   Neda Darvishi🇺🇸 · M.R. Masouminia🇬🇧

   We calculate the fiducial and differential $W^{\pm }/Z^0+jet(s)$ production cross-sections in the presence of electroweak (EW) corrections through virtual loop contributions to the matrix elements (MEs) of the processes and real partonic cascade emissions. The calculations are carried out for proton-proton collisions at $\sqrt{s}=13$ TeV, using Herwig 7 general-purpose Monte-Carlo event generator with leading-order or next-to-leading-order MEs that are interfaced with different parton-shower configurations. The results are compared with precision experimental measurements from ATLAS collaboration and with similar predictions within the $k_t$-factorisation framework, providing a test for the validity of the newly-implemented QCD$\oplus$QED$\oplus$EW parton shower in Herwig 7. It is shown that the inclusion of EW radiations in the parton shower simulations improves Herwig 7's predictions in describing the experimental data. Additionally, the inclusion of parton shower-induced real EW emissions can take precedence over the incorporation of virtual EW corrections for the simulation of EW-sensitive events.

   hep-phNPB(2022)·11 citations
6. 06*

   Hydrodynamic helicity polarization in relativistic heavy ion collisions

   Cong Yi🇨🇳 · Shi Pu🇨🇳 · Jian-Hua Gao🇨🇳 · Di-Lun Yang🇹🇼

   We study helicity polarization through the (3+1) dimensional relativistic viscous hydrodynamic models at $\sqrt{s_{NN}}=200$GeV Au+Au collisions. Similar to the local spin polarization, we consider the helicity polarization beyond global equilibrium and investigate the contributions induced by thermal vorticity, shear viscous tensor, and the fluid acceleration. We find that the local helicity polarization induced by thermal vorticity dominates over other contributions. It also implies that in the low-energy collisions, the the fluid vorticity as part of thermal vorticity may play the crucial role to the total helicity polarization. Such a finding could be useful for probing the local strength of vorticity in rotational quark gluon plasmas by measuring helicity polarization. Our simulation confirms the strict space reversal symmetry, whereas we also compare our numerical results with approximated relations derived from ideal Bjorken flow. Our studies also provide a baseline for the future investigation on local parity violation through the correlations of helicity polarization.

   hep-phnucl-thPRC(2022)·35 citations
7. 07*

   Analytic solutions of relativistic dissipative spin hydrodynamics with radial expansion in Gubser flow

   Dong-Lin Wang🇨🇳 · Xin-Qing Xie🇨🇳 · Shuo Fang🇨🇳 · Shi Pu🇨🇳

   We have derived the analytic solutions of dissipative relativistic spin hydrodynamics with Gubser expansion. Following the standard strategy of deriving the solutions in a Gubser flow, we take the Weyl rescaling and obtain the energy-momentum and angular momentum conversation equations in the $d{S}_3\times \mathbb{R}$ space-time. We then derive the analytic solutions of spin density, spin potential and other thermodynamic in $d{S}_3\times \mathbb{R}$ space-time and transform them back into Minkowski space-time ${\mathbb{R}}^{3,1}$. In the Minkowski space-time, the spin density and spin potential including the information of radial expansion decay as $\sim L^{-2}{\tau }^{-1}$ and $\sim L^{-2}{\tau }^{-1/3}$ in large $L$ limit, with $\tau$ being proper time and $L$ being the characteristic length of the system, respectively. Moreover, we observe the non-vanishing spin corrections to the energy density and other dissipative terms in the Belinfante form of dissipative spin hydrodynamics. Our results can also be used as test beds for future simulations of relativistic dissipative spin hydrodynamics.

   hep-phnucl-thPRD(2022)·45 citations
8. 08*

   Collider Signatures of Type-X 2HDM + scalar singlet dark matter at HL-LHC

   Atri Dey🇮🇳 · Jayita Lahiri🇮🇳

   As the 125 GeV Higgs becomes disfavored as a portal to the dark sector, one is motivated to look beyond the SM-Higgs sector, into extended scalar-mediated portal mechanisms. In this work we consider one interesting possibility of such extended scalar sector, namely Type X two Higgs doublet with a scalar singlet dark matter. This model with the advantage of light pseudoscalars also provides the explanation for the observed anomalous magnetic moment of muon. The dark matter phenomenology of this model is unique from the other types of two Higgs doublet models. Therefore, it is quite intriguing to look for signatures specific to this model at the collider experiments. In this work we take up the task of finding suitable final states and regions of parameters space that can be probed at the high-luminosity runs of LHC. We go beyond our rectangular cut-based approach and use Artificial Neural Network which shows remarkable improvement in terms of signal significance.

   hep-ph6 citations
9. 09*

   Investigation of hidden-charm double strange pentaquark candidate $P_{css}$ via its mass and strong decays

   K. Azizi🇮🇷 · Y. Sarac🇹🇷 · H. Sundu🇹🇷

   This work presents an analysis of a hidden charmed pentaquark candidate state with double strange quark in its quark content. The investigation is performed in two parts, which provide the mass prediction of the considered state and its partial decay widths for the $P_{css}\to {\Xi }^{0}J/\psi$ and $P_{css}\to {\Xi }_c^{+}{D}_s^{-}$ channels. For the analyses, two-point and three-point QCD sum rule methods are applied to get the mass and the widths, respectively. The mass for this candidate state is obtained as $m_{P_{css}}=4600\pm 155$ MeV with corresponding current coupling constant ${\lambda }_{P_{css}}=(0.81\pm 0.21)\times 10^{-3}$ GeV${}^6$. These results are used in the analysis of the partial widths of this state for the decays $P_{css}\to {\Xi }^{0}J/\psi$ and $P_{css}\to {\Xi }_c^{+}{D}_s^{-}$. From these decays, the total width is obtained as $\Gamma =12.29\pm 2.94$ MeV. These results may shed light on the future experimental searches in which such types of states are probed and may provide information to discriminate between such possible observations.

   hep-phhep-exhep-latEPJC(2022)·29 citations
10. 10*

    Gluon fragmentation into $B_c^{(\ast )}$ in NRQCD factorization

    Feng Feng🇨🇳 · Yu Jia🇨🇳 · Deshan Yang🇨🇳

    The universal fragmentation functions of gluon into the flavored quarkonia $B_c$ and (polarized) $B_c^{\ast }$ are computed within NRQCD factorization framework, at the lowest order in velocity expansion and strong coupling constant. It is mandatory to invoke the DGLAP renormalization program to render the NRQCD short-distance coefficients UV finite in a point-wise manner. The calculation is facilitated with the sector decomposition method, with the final results presented with high numerical accuracy. This knowledge is useful to enrich our understanding toward the large-$p_T$ behavior of $B_c^{(\ast )}$ production at LHC experiment.

    hep-phPRD(2022)·19 citations
11. 11*

    Exploring Heavy Higgs Bosons at a 100 TeV Hadron Collider within the Semi-Constrained NMSSM

    Kun Wang🇨🇳 · Pengfu Tian🇨🇳 · Jingya Zhu🇨🇳

    In this study, we explore the detectability of heavy Higgs bosons in the $pp\to b\bar{b}H/A\to b\bar{b}t\bar{t}$ channel at a 100 TeV hadron collider within the semi-constrained Next-to-Minimal Supersymmetric Standard Model (NMSSM). We calculate their production cross sections and decay branching ratios, comparing these with simulation results from existing reference. We focus on the heavy, doublet-dominated CP-even Higgs $H$ and CP-odd Higgs $A$, with mass limits set below 10 TeV to ensure detectability. We find that at a collider with 3 ab${}^{-1}$ of integrated luminosity, the potential for detecting heavy Higgs bosons varies significantly with their mass and $\tan \beta$. Heavy Higgs bosons below 2 TeV are within the testable range, while those heavier than 7 TeV fall below the exclusion and discovery thresholds, rendering them undetectable. For masses between 2 and 7 TeV, heavy Higgs bosons with $\tan \beta$ less than 20 can be detected, whereas those with $\tan \beta$ greater than 20 are beyond the current discovery or exclusion capabilities.

    hep-phCPC(2024)·2 citations
12. 12*

    Meson structure on the light-front III : The Hamiltonian, heavy quarkonia, spin and orbit mixing

    Edward Shuryak🇺🇸 · Ismail Zahed🇺🇸

    This is the third paper on hadronic light front wave functions (LFWFs). We derive a light front Hamiltonian from first principles using the key features of the QCD vacuum at low resolution. In the first approximation, it gives transverse oscillator and longitudinal harmonic modes and yields the correct Regge trajectories. For heavy quarkonia, we compare its spectrum to that obtained from the usual Schroedinger equation in the rest frame. We use the same approach for light quarks, and investigate the role of confinement and chiral symmetry breaking in the quark-antiquark sector. We then study spin-spin and spin-orbit mixing, resulting in e.g. quadrupole moments of vector mesons. For the light mesons, we show how to extend the famed t${}^{\prime }$Hooft interaction to the light front, which solves the U(1) problem and helps produce a light pion. We use the ensuing light front wavefunctions, to derive the pertinent parton distribution functions, parton amplitudes and low energy constants.

    hep-phhep-latnucl-thPRD(2023)·20 citations
13. 13*

    Q-balls with Multiple Charges and Cores

    Olivier Lennon🇬🇧

    Q-balls -- whether in the single-field or multi-field context -- are usually studied in theories containing only one stabilising symmetry. However, this is not the most general scenario. In this paper, we study a class of theories with multiple symmetries. We consider both the traditional thin- and thick-wall limits of these theories, deriving sufficient conditions for existence in the latter case. Moreover, we also introduce a new state that could exist in this class of theory -- a cored Q-ball. We show that this new state can be energetically stable, but leave a detailed phenomenological study to later work.

    hep-phhep-th3 citations
14. 14*

    Scalar Bound States of $D^{\ast }{\bar{D}}^{\ast }$ and $B^{\ast }{\bar{B}}^{\ast }$ in the Bethe-Salpeter Formalism

    Rui-Cheng Li🇨🇳

    We study the scalar bound states of $D^{\ast }{\bar{D}}^{\ast }$ and $B^{\ast }{\bar{B}}^{\ast }$ in the Bethe-Salpeter formalism, with the effective interaction kernel extracted from the chiral perturbative theory and the heavy quark effective theory in the ladder approximation and the covariant instantaneous approximation. The results show that, in the scalar case ($J=0$), there can only exist $I=0$ bound states for parameters in proper range, while there cannot exist the $I=1$ bound states in the whole reasonable parameter range, due to more constraints arising from our definition of the Bethe-Salpeter wavefunction.

    hep-ph1 citation
15. 15*

    Antimatter in the Milky Way

    A.D. Dolgov🇷🇺

    Recent astronomical observations indicating a strikingly abundant presence of antimatter in the Galaxy, in particular, of anti-stars are reviewed. Long-time earlier theoretical predictions are briefly discussed.

    ↳ astro-ph.GAhep-ph3 citations
16. 16*

    Critical behavior towards the chiral limit at vanishing and non-vanishing chemical potentials

    Olaf Kaczmarek🇩🇪 · Frithjof Karsch🇩🇪 · Anirban Lahiri🇩🇪 · Sheng-Tai Li🇨🇳 · Mugdha Sarkar🇹🇼 · Christian Schmidt🇩🇪 · Philipp Scior🇺🇸

    We study the scaling behavior of the (2+1)-flavor QCD crossover region towards the chiral limit with smaller-than-physical light quark mass gauge ensembles, generated using the HISQ fermion discretization. At zero chemical potential, we study the fluctuations of conserved charges and their correlations with the chiral condensate, towards the chiral limit. We analyse the role of universal and regular contributions to the above quantities. We find a preliminary estimate of the leading curvature coefficient of the chiral phase transition line using scaling arguments.

    ↳ hep-lathep-phnucl-thPoS(2022)·6 citations
17. 17*

    Revisiting the constraints on primordial black hole abundance with the isotropic gamma ray background

    Siyu Chen🇨🇳 · Hong-Hao Zhang🇨🇳 · Guangbo Long🇨🇳

    We revisit the constraints on primordial black holes (PBHs) in the mass range $10^{13}-10^{18}$ g by comparing the 100\,keV-5\,GeV gamma-ray background with isotropic flux from PBH Hawking radiation (HR). We investigate three effects that may update the constraints on the PBH abundance; i) reliably calculating the secondary spectra of HR for energy below 5\,GeV, ii) the contributions to the measured isotropic flux from the Galactic PBH HR and that from annihilation radiation due to evaporated positrons, iii) inclusion of astrophysical background from gamma-ray sources. The conservative constraint is significantly improved by more than an order of magnitude at $2\times 10^{16}$g$\lesssim M\lesssim 10^{17}$g over the past relevant work, where the effect ii is dominant. After further accounting for the astrophysical background, more than a tenfold improvement extends to a much wider mass range $10^{15}$g$\lesssim M\lesssim 2\times 10^{17}$g.

    ↳ astro-ph.COastro-ph.HEhep-phPRD(2022)·32 citations
18. 18*

    Spinodal Gravitational Waves

    Yago Bea🇫🇮 · Jorge Casalderrey-Solana🇪🇸 · Thanasis Giannakopoulos🇵🇹 · Aron Jansen🇪🇸 · Sven Krippendorf🇩🇪 · David Mateos🇪🇸 · Mikel Sanchez-Garitaonandia🇪🇸 · Miguel Zilhão🇵🇹

    We uncover a new gravitational-wave production mechanism in cosmological, first-order, thermal phase transitions. These are usually assumed to proceed via the nucleation of bubbles of the stable phase inside the metastable phase. However, if the nucleation rate is sufficiently suppressed, then the Universe may supercool all the way down the metastable branch and enter the spinodal region. In this case the transition proceeds via the exponential growth of unstable modes and the subsequent formation, merging and relaxation of phase domains. We use holography to follow the real-time evolution of this process in a strongly coupled, four-dimensional gauge theory. The resulting gravitational wave spectrum differs qualitatively from that in transitions mediated by bubble nucleation. We discuss the possibility that the spinodal dynamics may be preceded by a period of thermal inflation.

    ↳ hep-thgr-qchep-phJHEP(2025)·38 citations
19. 19*

    Reheating in runaway inflation models via the evaporation of mini primordial black holes

    Ioannis Dalianis🇬🇷 · George P. Kodaxis🇬🇷

    We investigate the cosmology of mini Primordial Black Holes (PBHs) produced by large density perturbations that collapse during a stiff fluid domination phase. Such a phase can be realized by a runaway-inflaton model that crosses an inflection point or a sharp feature at the last stage of inflation. Mini PBHs evaporate promptly and reheat the early universe. In addition, we examine two notable implications of this scenario: the possible presence of PBH evaporation remnants in galaxies and a non-zero residual potential energy density for the runaway inflaton that might play the role of the dark energy. We specify the parameter space that this scenario can be realized and we find that a transit PBH domination phase is necessary due to gravitational wave (GW) constraints. A distinct prediction of the scenario is a compound GW signal that might be probed by current and future experiments. We also demonstrate our results employing an explicit inflation model.

    ↳ astro-ph.COgr-qchep-phGalaxies(2022)·25 citations
20. 20*

    Extra Dimensions and Fuzzy Branes in String-inspired Nonlocal Field Theory

    Florian Nortier🇫🇷

    Particle physics models with extra dimensions of space (EDS's) and branes shed new light on electroweak and flavor hierarchies with a rich TeV scale phenomenology. This article highlights new model building issues with EDS's and branes, arising in the framework of weakly nonlocal field theories. It is shown that a brane-localized field is still delocalized in the bulk on a small distance from the brane position: fields localized on such distant fuzzy branes are thus allowed to interact directly with suppressed couplings. Directions for model building are also given: (i) with fuzzy branes, a new realization of split fermions in an EDS is presented, naturally generating flavor hierarchies; (ii) with a warped EDS, the usual warp transmutation of a brane-localized mass term is revisited, where it is shown that the nonlocal scale is also redshifted and provides a smooth UV cutoff for the Higgs boson mass. This framework is expected to have natural UV completions in string theory, but the possibility to embed it in recent UV complete weakly nonlocal quantum field theories is commented.

    ↳ hep-thhep-phActa Phys.Polon.B(2023)·11 citations
21. 21*

    Pulsar Timing Residual induced by Wideband Ultralight Dark Matter with Spin 0, 1, 2

    Sichun Sun🇨🇳 · Xing-Yu Yang🇨🇳 · Yun-Long Zhang🇨🇳

    The coherent oscillation of ultralight dark matter in the mass regime around $10^{-23}$ eV induces changes in gravitational potential with the frequency in the nanohertz range. This effect is known to produce a monochromatic signal in the pulsar timing residuals. Here we discuss a multifield scenario that produces a wide spectrum of frequencies, such that the ultralight particle oscillation can mimic the pulsar timing signal of stochastic common spectrum process. We discuss how ultralight dark matter with various spins produces such a wide band spectrum on pulsar timing residuals and perform the Bayesian analysis to constrain the parameters. It turns out that the stochastic background detected by NANOGrav can be associated with a wideband ultralight dark matter.

    ↳ astro-ph.COgr-qchep-phhep-thPRD(2022)·29 citations
22. 22*

    FACET: A new long-lived particle detector in the very forward region of the CMS experiment

    S. Cerci🇹🇷 · D. Sunar Cerci (1 and 2)🇹🇷 · D. Lazic (3)🇺🇸 · G. Landsberg (4)🇺🇸 · F. Cerutti🇨🇭 · M. Sabate-Gilarte (5)🇨🇭 · M.G. Albrow🇺🇸 · J. Berryhill🇺🇸 · D.R. Green🇺🇸 · J. Hirschauer (6)🇺🇸 · S. Kulkarni (7)🇦🇹 · J.E. Brucken (8)🇫🇮 and 19 other authors

    We describe a proposal to add a set of very forward detectors to the CMS experiment for the high-luminosity era of the Large Hadron Collider to search for beyond the standard model long-lived particles, such as dark photons, heavy neutral leptons, axion-like particles, and dark Higgs bosons. The proposed subsystem is called FACET for Forward-Aperture CMS ExTension, and will be sensitive to any particles that can penetrate at least 50 m of magnetized iron and decay in an 18 m long, 1 m diameter vacuum pipe. The decay products will be measured in detectors using identical technology to the planned CMS Phase-2 upgrade.

    ↳ hep-exhep-phJHEP(2022)·92 citations
23. 23*

    The landscape of massive black-hole spectroscopy with LISA and Einstein Telescope

    Swetha Bhagwat🇮🇹 · Costantino Pacilio🇮🇹 · Enrico Barausse🇮🇹 · Paolo Pani🇮🇹

    Measuring the quasi-normal mode~(QNM) spectrum emitted by a perturbed black-hole~(BH) --~also known as BH spectroscopy~-- provides an excellent opportunity to test the predictions of general relativity in the strong-gravity regime. We investigate the prospects and precision of BH spectroscopy in massive binary black hole ringdowns, one of the primary science objectives of the future Laser Interferometric Space Antenna~(LISA) mission. We simulate various massive binary BH population models, featuring competing prescriptions for the Delays between galaxy and BH mergers, for the impact of supernova feedback on massive BH growth, and for the initial population of high redshift BH seeds (light versus heavy seeds). For each of these scenarios, we compute the average number of expected events for precision BH spectroscopy using a Fisher-matrix analysis. We find that, for any heavy seed scenario, LISA will measure the dominant mode frequency within $\mathcal{O}(0.1)\%$ relative uncertainty and will estimate at least 3 independent QNM parameters within $1\%$ error. The most optimistic heavy seed scenarios produce $\mathcal{O}(100)$ events with $1\%$ measurability for 3 or more QNM quantities during LISA's operational time. On the other hand, light seed scenarios produce lighter merger remnants, which ring at frequencies higher than LISA's sensitivity. Interestingly, the light seed models give rise to a fraction of mergers in the band of Einstein Telescope, allowing for the measurement of 3 QNM parameters with $\sim 10\%$ relative errors in approximately a few to ten events/yr. More precise BH spectroscopy in the light seed scenarios would require instruments operating in the deciHertz band.

    ↳ gr-qcastro-ph.HEhep-phPRD(2022)·62 citations
24. 24*

    Olsson.wl : a Mathematica package for the computation of linear transformations of multivariable hypergeometric functions

    B. Ananthanarayan🇮🇳 · Souvik Bera🇮🇳 · S. Friot🇫🇷 · Tanay Pathak🇮🇳

    We present the Olsson$.$wl Mathematica package which aims to find linear transformations for some classes of multivariable hypergeometric functions. It is based on a well-known method developed by P. O. M. Olsson in J. Math. Phys. 5, 420 (1964) in order to derive the analytic continuations of the Appell $F_1$ double hypergeometric series from the linear transformations of the Gauss ${}_2{F}_1$ hypergeometric function. We provide a brief description of Olsson's method and demonstrate the commands of the package, along with examples. We also provide a companion package, called ROC2$.$wl and dedicated to the derivation of the regions of convergence of double hypergeometric series. This package can be used independently of Olsson$.$wl.

    ↳ cs.MScs.NAhep-phhep-th+1Comput.Phys.Commun.(2024)·27 citations

* Reconstructed cohort: no mailing for this day survives in the archive. Papers are grouped by their submission times and arXiv's announcement cut-off, assuming announcement without delay; positions follow identifier order. Validated at ~91% exact-day agreement against the archived era.