Wed·Jul 27, 2022Wednesday·July 27, 2022

1. 01*

   The $B$ Anomalies and non-SMEFT New Physics

   David London🇨🇦

   The modern viewpoint is that the Standard Model is the leading part of an effective field theory that obeys the symmetry $SU(3{)}_C\times SU(2{)}_L\times U(1{)}_Y$. Since the discovery of the Higgs boson, it is generally assumed that this symmetry is realized linearly (SMEFT), but a nonlinear realization (e.g., HEFT) is still possible. The two differ in their predictions for the size of certain low-energy dimension-6 four-fermion operators: for these, HEFT allows $O(1)$ couplings, while in SMEFT they are suppressed by a factor $v^2/{\Lambda }_{\mathrm{NP}}^2$, where $v$ is the Higgs vev. In this talk, I argue that (i) such non-SMEFT operators contribute to both $b\to s{\ell }^{+}{\ell }^{-}$ and $b\to c{\tau }^{-}{\bar{\nu }}_{\tau }$, transitions involved in the present-day $B$ anomalies, (ii) the contributions to $b\to s{\ell }^{+}{\ell }^{-}$ are constrained to be small, at the SMEFT level, and (iii) the contribution to $b\to c{\tau }^{-}{\bar{\nu }}_{\tau }$ can be sizeable. I show that the angular distribution in $\bar{B}\to D^{\ast }(\to D{\pi }^{\prime }){\tau }^{-}(\to {\pi }^{-}{\nu }_{\tau }){\bar{\nu }}_{\tau }$ contains enough information to extract the coefficients of all new-physics operators. The measurement of this angular distribution can tell us if non-SMEFT new physics is present.

   hep-ph1 citation
2. 02*

   Jet-medium photons as a probe of parton dynamics

   Rouzbeh Modarresi Yazdi🇨🇦 · Shuzhe Shi🇺🇸 · Charles Gale🇨🇦 · Sangyong Jeon🇨🇦

   Photons resulting from jet-medium interactions offer the opportunity of studying the evolving quark distribution in a heavy ion collision. The spectra of jet-medium photons is presented within the JETSCAPE framework for two different energy loss models, MARTINI and CUJET. Jet-medium photons can contribute significantly to the spectrum of direct photons in the intermediate $p_T$ range.

   hep-phnucl-thActa Phys.Polon.Supp.(2023)·7 citations
3. 03*

   Neutrino-induced single pion production and the reanalyzed bubble chamber data

   D.F. Tamayo Agudelo🇦🇷 · A. Mariano🇦🇷 · D.E. Jaramillo Arango🇨🇴

   In this work we report the calculation of the charged current total and differential cross sections for weak pion-production with neutrinos and antineutrinos, with the final pion-nucleon pair invariant mass $W_{\pi N}\lesssim 2$GeV. Our results are compared with the recent reanalyzed data from the old bubble chamber experiments, that solved the discrepancy between the ANL and BNL data. We implement a model previously tested for the cuts $W_{\pi N}<1.4,1.6$ Gev which includes explicitly resonances in the first and second resonance regions, within different approaches for the resonances self energy and $\frac{3}{2}$-vertexes and propagators, a fact not usually analyzed. Our model leans on consistent effective Lagrangians that generate resonant amplitudes together non resonant plus resonant backgrounds. Effects of hadrons finite extension and more energetic resonances corresponding to the emitted pion-nucleon invariant mass in the $1.6<W_{\pi N}<2$ GeV region, are taking into account using appropiate form factors in consistency with previous results on neutral current pion production calculations. Our results reproduce well the reanalysed data without cuts and are compared with another models.

   hep-phnucl-thPRD(2022)·2 citations
4. 04*

   Leptonic Anomalous Magnetic and Electric Dipole Moments in the CP-violating NMSSM with and without Inverse Seesaw Mechanism

   Thi Nhung Dao (Phenikaa U., Hanoi)🇻🇳 · Duc Ninh Le (Phenikaa U., Hanoi)🇻🇳 · Margarete Mühlleitner (KIT, Karlsruhe, TP)🇩🇪

   The new results on the muon anomalous magnetic moment (AMM) published by Fermilab in 2021, did not lead to a reduction of its long-pending deviation from the Standard Model (SM) value by more than 4$\sigma$. The explanation of this discrepancy by adding new particles to the theory puts many new physics models under tension when combined with the null results of the LHC direct searches for new particles. In this paper, we investigate the CP-violating Next-to-Minimal Supersymmetric extension of the SM (NMSSM) with and without an inverse seesaw mechanism. We compute the one-loop supersymmetric contributions to the AMM and the two-loop Barr-Zee-type diagrams with effective Higgs couplings to photons for the leptonic electric dipole moments (EDMs). The effects of the extended (s)neutrino sector on the muon AMM and on the mass of the SM-like Higgs boson can be significant. Complex phases can have an important impact on the AMM. On the other hand, the stringent limits from the EDMs on the complex phases have to be taken into account. Our calculations have been implemented in the Fortran codes NMSSMCALC and NMSSMCALC-nuSS which are publicly available. Besides the leptonic AMMs and EDMs, these programs can compute the Higgs boson masses and mixings, together with Higgs boson decay widths and branching ratios taking into account the mostup-to-date higher-order corrections in the NMSSM with and without inverse seesaw mechanism.

   hep-phEPJC(2022)·12 citations
5. 05*

   Muon conversion to an eletron in nuclei in the $B-L$ symmetric SSM

   Ze-Ning Zhang🇨🇳 · Hai-Bin Zhang🇨🇳 · Xing-Xing Dong🇨🇳 · Jin-Lei Yang🇨🇳 · Wei Li🇨🇳 · Zhong-Jun Yang🇨🇳 · Tong-Tong Wang🇨🇳 · Tai-Fu Feng🇨🇳

   In a few years, the COMET experiment at J-PARC and the Mu2e experiment at Fermilab will probe the $\mu -e$ conversion rate in the vicinity of $\mathcal{O}(10^{-17})$ for an Al target with high experimental sensitivity. Within the framework of the minimal supersymmetric extension of the Standard Model with local $B-L$ gauge symmetry (B-LSSM), we analyze the lepton flavor violating (LFV) process of $\mu -e$ conversion in nuclei. Considering the constraint of the experimental upper limit of the LFV rare decay $\mu \to e\gamma$, the $\mu -e$ conversion rates in nuclei within the B-LSSM can achieve $\mathcal{O}(10^{-12})$, which is 5 orders of magnitude larger than the future experimental sensitivity at the Mu2e and COMET experiments and may be detected in the near future.

   hep-phhep-exPRD(2022)·0 citations
6. 06*

   Perturbative confinement in thermal Yang-Mills theories induced by imaginary angular velocity

   Shi Chen🇯🇵 · Kenji Fukushima🇯🇵 · Yusuke Shimada🇯🇵

   We perturbatively compute the Polyakov loop potential at high temperature with finite imaginary angular velocity. This imaginary rotation does not violate the causality and the thermodynamic limit is well defined. We analytically show that the imaginary angular velocity induces the perturbatively confined phase and serves as a new probe to confinement physics. We discuss a possible phase diagram that exhibits adiabatic continuity from the perturbative confinement to the confined phase at low temperature. We also mention subtlety in the analytical continuation from imaginary to real angular velocity by imposing a causality bound.

   hep-phhep-thPRL(2022)·61 citations
7. 07*

   Development of transverse flow for small and large systems in conformal kinetic theory

   Victor E. Ambrus🇷🇴 · S. Schlichting🇩🇪 · C. Werthmann🇩🇪

   We employ an effective kinetic description to study the space-time dynamics and development of transverse flow of small and large collision systems. By combining analytical insights in the few interactions limit with numerical simulations at higher opacity, we are able to describe the development of transverse flow from very small to very large opacities, realised in small and large collision systems. Surpisingly, we find that deviations between kinetic theory and hydrodynamics persist even in the limit of very large interaction rates, which can be attributed to the presence of the early pre-equilibrium phase.

   hep-phActa Phys.Polon.Supp.(2023)·3 citations
8. 08*

   The hierarchy problem and the vacuum stability in two-scalar dark matter model

   Zohre Habibolahi🇮🇷 · Karim Ghorbani🇮🇷 · Parsa Ghorbani🇮🇷

   We consider an extension to the Standard Model (SM) with two extra real singlet scalars which interact with the SM Higgs particle. The lighter scalar is taken as the dark matter (DM) candidate. We show that the model successfully explains the relic abundance of the DM in the universe and evades the strong bounds from direct detection experiments while respecting the perturbativity and the vacuum stability conditions. In addition, we study the hierarchy problem within the Veltman approach by solving the renormalization group equations at one-loop. We demonstrate that the addition of the real singlet scalars contributes to the Veltman parameters which in turn results in satisfying the Veltman conditions much lower than the Planck scale ${\Lambda }_{\text{Pl}}$ down to the electroweak scale. Therefore, the presence of the extra scalars solves the fine-tuning problem of the Higgs mass. For the case of the two-scalar DM model we find two representative points in the viable parameter space which satisfy also the Veltman conditions at $\Lambda =300$ GeV and $\Lambda =1$ TeV.

   hep-phhep-thPRD(2022)·9 citations
9. 09*

   $X$ and $Z_{cs}$ in $B^{+}\to J/\psi \varphi K^{+}$ as $s$-wave threshold cusps and alternative spin-parity assignments to $X(4274)$ and $X(4500)$

   Xuan Luo (Anhui University)🇨🇳 · Satoshi X. Nakamura (Univ. of Science and Technology of China)🇨🇳

   Recent LHCb's amplitude analysis on $B^{+}\to J/\psi \varphi K^{+}$ suggests the existence of exotic $X$ and $Z_{cs}$ hadrons, based on an assumption that Breit-Wigner resonances describe all the peak structures. However, all the peaks and also dips in the spectra are located at relevant meson-meson thresholds where threshold kinematical cusps might cause such structures. This points to the importance of an independent amplitude analysis with due consideration of the kinematical effects, and this is what we do in this work. Our model fits well $J/\psi \varphi$, $J/\psi K^{+}$, and $K^{+}\varphi$ invariant mass distributions simultaneously, demonstrating that all the $X$, $Z_{cs}$, and dip structures can be well described with the ordinary $s$-wave threshold cusps. Spin-parity of the $X(4274)$ and $X(4500)$ structures are respectively $0^{-}$ and $1^{-}$ from our model, as opposed to $1^{+}$ and $0^{+}$ from the LHCb's. With all relevant threshold cusps considered, the number of fitting parameters seems to be significantly reduced. The LHCb data requires $D_s^{(\ast )}{\bar{D}}^{\ast }$ scattering lengths in our model to be consistent with zero, disfavoring $D_s^{(\ast )}{\bar{D}}^{\ast }$ molecule interpretations of $Z_{cs}(4000)$ and $Z_{cs}(4220)$ and, via the SU(3) relation, being consistent with previous lattice QCD results.

   hep-phhep-exnucl-thPRD(2023)·9 citations
10. 10*

    Neutrino mass and charged lepton flavor violation in an extended left-right symmetric model

    Chayan Majumdar🇮🇳 · Supriya Senapati🇮🇳 · S. Uma Sankar🇮🇳 · Urjit A. Yajnik🇮🇳

    We consider an $U(1{)}_{L_{\mu }-L_{\tau }}$ extended left-right symmetric gauge theory where the neutrino masses are generated through inverse seesaw mechanism. In this model the muon $(g-2)$ anomaly is accounted for by the mediation of $Z_{\mu \tau }$, the gauge boson of $U(1{)}_{L_{\mu }-L_{\tau }}$ symmetry. The symmetries of the model require the light neutrino mass matrix to have a particular two-zero texture, which leads to non-trivial constraints in the minimum neutrino mass. In addition, the model predicts observable charged lepton flavor violation in $\mu -\tau$ sector.

    hep-phNPB(2022)·1 citation
11. 11*

    Cosmic neutrino flux and spin flavor oscillations in intergalactic medium

    Ashutosh Kumar Alok🇮🇳 · Neetu Raj Singh Chundawat🇮🇳 · Arindam Mandal🇮🇳

    The ultra high energy (UHE) cosmic neutrinos are expected to play a pivotal role in the disquisition of physics beyond the standard model of particle physics as well as serve as an ideal cosmic messengers. This epitomizes the selling point of several currently running or planned neutrino telescopes. The UHE cosmic neutrinos usually perambulate gargantuan scales in the extragalactic universe having a magnetic field. If neutrinos have a finite magnetic moment (${\mu }_{\nu }$) owing to quantum loop corrections, this may result in spin-flavor oscillations, which can affect the cosmic neutrino flux. Using the current limit and assuming neutrinos to be Dirac particles, we show that the flux of cosmic neutrinos will reduce by half if they traverse few Mpcs through the intergalactic magnetic field, in the range of $\mu \mathrm{G}$ to $nG$. Moreover, one can safely neglect the effect of ${\mu }_{\nu }$ if the current upper bound is improved by a few orders of magnitude even if the neutrinos travel through the size of the visible universe.

    hep-phastro-ph.HEhep-exPLB(2023)·24 citations
12. 12*

    The effect of light sea quark symmetry breaking on polarized nucleus and sum rules

    Fatemeh Arbabifar🇮🇷 · Shahin Atashbar Tehrani🇮🇷

    The polarized structure functions of ${}^{3}He$ and ${}^{3}H$ nuclei are calculated in NLO approximation, considering and disregarding the light sea quark symmetry breaking. We employ the polarized structure function of the nucleons within the nucleus extracted from our two recent analysis on polarized DIS data and on polarized DIS+SIDIS data. Since the data of the second analysis cover a bigger range of Bjorken variable, both SU(2) and SU(3) symmetry breaking is considered within the analysis. Then we calculate and compare the polarized structures of nuclei extracted from both scenarios. Also the Bjorken and ELT sum rules are calculated using the moments of structure functions. The results are compared with experimental data and the differences are investigated.

    hep-phPoS(2022)·0 citations
13. 13*

    The gradient flow formulation of the electroweak Hamiltonian

    Fabian Lange🇩🇪

    Flavor observables are usually computed with the help of the electroweak Hamiltonian which separates the short-distance from the long-distance regime. The Wilson coefficients are calculated perturbatively, while matrix elements of the operators require non-perturbative treatment for many processes, e.g. through lattice simulations. The resulting necessity to compute the transformation between the different renormalization schemes in the two calculations constitutes an important source of uncertainties. An elegant solution to this problem is provided by the gradient-flow formalism, already widely used in lattice simulations, because its composite operators do not require renormalization. In this contribution we report on the construction of the electroweak Hamiltonian in the gradient-flow formalism through NNLO in QCD.

    hep-phhep-latPoS(2022)·0 citations
14. 14*

    Compton scattering for photon and gluon in fixed-target collisions at AFTER@LHC

    Gongming Yu🇨🇳 · Runlong Liu🇨🇳 · Yanbing Cai🇨🇳 · Quangui Gao🇨🇳 · Qiang Hu🇨🇳

    We calculate the Compton scattering for photon and gluon with the Klein-Nishina formula in fixed-target collisions by using the proton and lead beams at AFTER@LHC. In these collisions, we can investigate the particular case of Compton scattering at the partonic level, such as $\gamma q\to q\gamma$, $\gamma q\to qg$, $gq\to q\gamma$, and $gq\to qg$, that can help to check of the equivalent-photon approximation and understand the dynamics of hadron collisions at high energies, as well as probe the inner hadron structure.

    hep-phnucl-th0 citations
15. 15*

    Shining Light on Cosmogenic Axions with Neutrino Experiments

    Yanou Cui🇺🇸 · Jui-Lin Kuo🇺🇸 · Josef Pradler🇦🇹 · Yu-Dai Tsai🇺🇸

    While most searches for cosmic axions so far focused on their cold relics as (a component of) dark matter, various well-motivated cosmological sources can produce "boosted" axions that remain relativistic today. We demonstrate that existing/upcoming neutrino experiments such as Super-Kamiokande, Hyper-Kamiokande, DUNE, JUNO, and IceCube can probe such energetic axion relics. The characteristic signature is the mono-energetic single photon signal from axion absorption induced by the axion-photon coupling. This proposal offers to cover parameter ranges that are complementary to existing axion searches and provides new opportunities for discovery with neutrino facilities.

    hep-phastro-ph.COhep-exPRD(2022)·10 citations
16. 16*

    Constraining the Charge-, Time- and Rigidity-Dependence of Cosmic-Ray Solar Modulation with AMS-02 Observations during Solar Cycle 24

    Ilias Cholis🇺🇸 · Ian McKinnon🇺🇸

    Our basic theoretical understanding of the sources of cosmic rays and their propagation through the interstellar medium is hindered by the Sun, that through the solar wind affects the observed cosmic-ray spectra. This effect is known as solar modulation. Recently released cosmic-ray observations from the Alpha Magnetic Spectrometer (AMS-02) and publicly available measurements of the solar wind properties from the Advanced Composition Explorer and the Wilcox observatory allow us to test the analytical modeling of the time-, charge- and rigidity-dependence of solar modulation. We rely on associating measurements on the local heliospheric magnetic field and the heliospheric current sheet's tilt angle, to model the time-dependence and amplitude of cosmic-ray solar modulation. We find evidence for the solar modulation's charge- and rigidity-dependence during the era of solar cycle 24. Our analytic prescription to model solar modulation can explain well the large-scale time-evolution of positively charged cosmic-ray fluxes in the range of rigidities from 1 to 10 GV. We also find that cosmic-ray electron fluxes measured during the first years of cycle 24 are less trivial to explain, due to the complex and rapidly evolving structure of the Heliosphere's magnetic field that they experienced as they propagated inwards.

    ↳ astro-ph.SRastro-ph.HEhep-phphysics.space-phPRD(2022)·8 citations
17. 17*

    Parallelization techniques for quantum simulation of fermionic systems

    Jacob Bringewatt🇺🇸 · Zohreh Davoudi🇺🇸

    Mapping fermionic operators to qubit operators is an essential step for simulating fermionic systems on a quantum computer. We investigate how the choice of such a mapping interacts with the underlying qubit connectivity of the quantum processor to enable (or impede) parallelization of the resulting Hamiltonian-simulation algorithm. It is shown that this problem can be mapped to a path coloring problem on a graph constructed from the particular choice of encoding fermions onto qubits and the fermionic interactions onto paths. The basic version of this problem is called the weak coloring problem. Taking into account the fine-grained details of the mapping yields what is called the strong coloring problem, which leads to improved parallelization performance. A variety of illustrative analytical and numerical examples are presented to demonstrate the amount of improvement for both weak and strong coloring-based parallelizations. Our results are particularly important for implementation on near-term quantum processors where minimizing circuit depth is necessary for algorithmic feasibility.

    ↳ quant-phhep-lathep-phnucl-thQuantum(2023)·15 citations
18. 18*

    QCD Equilibrium and Dynamical Properties from Holographic Black Holes

    Joaquin Grefa🇺🇸 · Mauricio Hippert🇺🇸 · Jorge Noronha🇺🇸 · Jacquelyn Noronha-Hostler🇺🇸 · Israel Portillo🇺🇸 · Claudia Ratti🇺🇸 · Romulo Rougemont🇧🇷

    By using gravity/gauge correspondence, we employ an Einstein-Maxwell-Dilaton model to compute the equilibrium and out-of-equilibrium properties of a hot and baryon rich strongly coupled quark-gluon plasma. The family of 5-dimensional holographic black holes, which are constrained to mimic the lattice QCD equation of state at zero density, is used to investigate the temperature and baryon chemical potential dependence of the equation of state. We also obtained the baryon charge conductivity, and the bulk and shear viscosities with a particular focus on the behavior of these observables on top of the critical end point and the line of first order phase transition predicted by the model.

    ↳ nucl-thhep-phRev.Mex.Fis.Suppl.(2022)·6 citations
19. 19*

    New developments in relativistic magnetohydrodynamics

    Koichi Hattori🇨🇳 · Masaru Hongo🇯🇵 · Xu-Guang Huang🇨🇳

    Relativistic magnetohydrodynamics (RMHD) provides an extremely useful description of the low-energy long-wavelength phenomena in a variety of physical systems from quark-gluon plasma in heavy-ion collisions to matters in supernovas, compact stars, and early universe. We review the recent theoretical progresses of RMHD, such as a formulation of RMHD from the perspective of magnetic flux conservation using the entropy-current analysis, the nonequilibrium statistical operator approach applied to quantum electrodynamics, and the relativistic kinetic theory. We discuss how the transport coefficients in RMHD are computed in kinetic theory and perturbative quantum field theories. We also explore the collective modes and instabilities in RMHD with a special emphasis on the role of chirality in a parity-odd plasma. We also give some future prospects of RMHD, including the interaction with spin hydrodynamics and the new kinetic framework with magnetic flux conservation.

    ↳ hep-thastro-ph.HEhep-phnucl-th+1Symmetry(2022)·53 citations
20. 20*

    The three-loop equal-mass banana integral in $\epsilon$-factorised form with meromorphic modular forms

    Sebastian Pögel🇩🇪 · Xing Wang🇩🇪 · Stefan Weinzierl🇩🇪

    We show that the differential equation for the three-loop equal-mass banana integral can be cast into an $\epsilon$-factorised form with entries constructed from (meromorphic) modular forms and one special function, which can be given as an iterated integral of meromorphic modular forms. The $\epsilon$-factorised form of the differential equation allows for a systematic solution to any order in the dimensional regularisation parameter $\epsilon$. The alphabet of the iterated integrals contains six letters.

    ↳ hep-thhep-phmath-phmath.MPJHEP(2022)·65 citations
21. 21*

    Reaching percolation and conformal limits in neutron stars

    Michał Marczenko🇵🇱 · Larry McLerran🇺🇸 · Krzysztof Redlich🇵🇱 · Chihiro Sasaki🇵🇱

    Generating an ensemble of equations of state that fulfill multimessenger constraints, we statistically determine the properties of dense matter found inside neutron stars (NSs). We calculate the speed of sound and trace anomaly and demonstrate that they are driven towards their conformal values at the center of maximally massive NSs. The local peak of the speed of sound is shown to be located at values of the energy and particle densities which are consistent with deconfinement and percolation conditions in QCD matter. We also analyze fluctuations of the net-baryon number density in the context of possible remnants of critical behavior. We find that the global maxima of the variance of these fluctuations emerge at densities beyond those found in the interiors of NSs.

    ↳ nucl-thastro-ph.HEhep-phPRC(2023)·112 citations
22. 22*

    Mirror Neutron Stars: How QCD can be used to study dark matter through gravitational waves

    Maurício Hippert🇺🇸 · Jack Setford🇨🇦 · Hung Tan🇺🇸 · David Curtin🇨🇦 · Jacquelyn Noronha-Hostler🇺🇸 · Nicolás Yunes🇺🇸

    Given the lack of empirical evidence of weakly interacting dark matter, it is reasonable to look to other candidates such as a confining dark sector with a similar number of particles as the standard model. Twin Higgs mirror matter is one such model that is a twin of the standard model with particles masses 3--6 times heavier than the standard model that solves the hierarchy problem. This generically predicts mirror neutron stars, degenerate objects made entirely of mirror nuclear matter. We find their structure using a realistic equation of state from crust (nuclei) to core (relativistic mean-field model) and scale the particle masses using lattice QCD results. We find that mirror neutron stars have unique signatures that are detectable via gravitational waves and binary pulsars, that provides an intriguing possibility for probing dark matter.

    ↳ nucl-thastro-ph.HEhep-phActa Phys.Polon.Supp.(2023)·2 citations
23. 23*

    Addressing the Hubble and $S_8$ Tensions with a Kinetically Mixed Dark Sector

    Stephon Alexander🇺🇸 · Heliudson Bernardo🇨🇦 · Michael W. Toomey🇺🇸

    We present a kinetically mixed dark sector (KMIX) model to address the Hubble and $S_8$ tensions. Inspired from string theory, our model includes two fields: an axion, which plays a role similar to the scalar field in early dark energy models, and a dilaton. This theory differs from other axio-dilaton models aimed at the Hubble tension in that there is necessarily kinetic mixing between the two fields which allows for efficient energy transfer from the axion into the dilaton which has $w\approx 1$. As a direct consequence of these dynamics, we find the model does not need to resort to a fine-tuned potential to solve the Hubble tension and naturally accommodates a standard axion potential. Furthermore, the axion will necessarily makeup a small (fuzzy) fraction of ${\Omega }_{\mathrm{cdm}}$ once it begins to oscillate at the bottom of its potential and will suppress the growth of perturbations on scales sensitive to $S_8$. Interestingly, the scale of the potential for the dilaton has to be small, $\lesssim \mathcal{O}(10\mathrm{meV}{)}^4$, suggesting the possibility for a connection to dark energy. Implementing the dynamics for the background and perturbations in a modified Boltzmann code we calculate the CMB and matter power spectra for our theory. Exploring the parameter space of our model, we find regions which can accommodate a $\sim 10\%$ increase in $H_0$ from the Planck inferred value and $S_8$ values that are consistent with large-scale structure constraints.

    ↳ astro-ph.COgr-qchep-phhep-thJCAP(2023)·43 citations
24. 24*

    Characterizing the Expected Behavior of Non-Poissonian Template Fitting

    Luis Gabriel C. Bariuan🇺🇸 · Tracy R. Slatyer🇺🇸

    We have performed a systematic study of the statistical behavior of non-Poissonian template fitting (NPTF), a method designed to analyze and characterize unresolved point sources in general counts datasets. In this paper, we focus on the properties and characteristics of the Fermi-LAT gamma-ray data set. In particular, we have simulated and analyzed gamma-ray sky maps under varying conditions of exposure, angular resolution, pixel size, energy window, event selection, and source brightness. We describe how these conditions affect the sensitivity of NPTF to the presence of point sources, for inner-galaxy studies of point sources within the Galactic Center excess, and for the simplified case of isotropic emission. We do not find opportunities for major gains in sensitivity from varying these choices, within the range available with current Fermi-LAT data. We provide an analytic estimate of the NPTF sensitivity to point sources for the case of isotropic emission and perfect angular resolution, and find good agreement with our numerical results for that case.

    ↳ astro-ph.IMastro-ph.HEhep-phPRD(2023)·1 citation

* 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.