Fri·Apr 16, 2021Friday·April 16, 2021

1. 01*

   Fermion mass hierarchy and g-2 anomalies in an extended 3HDM Model

   A. E. Cárcamo Hernández🇨🇱 · Sergey Kovalenko🇨🇱 · M. Maniatis🇨🇱 · Ivan Schmidt🇨🇱

   We propose an extension of the three-Higgs-doublet model (3HDM), where the Standard Model (SM) particle content is enlarged by the inclusion of two inert $S{U}_{2L}$ scalar doublets, three inert and two active electrically neutral gauge singlet scalars, charged vector like fermions and Majorana neutrinos. These additional particles are introduced to generate the SM fermion mass hierarchy from a sequential loop suppression mechanism. In our model the top and exotic fermion masses appear at tree level, whereas the remaining fermions get their masses radiatively. Specifically, bottom, charm, tau and muon masses appear at 1-loop; the masses for the light up, down and strange quarks as well as for the electron at 2-loop and masses for the light active neutrinos at 3-loop. Our model successfully accounts for SM fermion masses and mixings and accommodates the observed Dark Matter relic density, the electron and muon anomalous magnetic moments, as well the constraints arising from charged Lepton Flavor Violating (LFV) processes. The proposed model predicts charged LFV decays within the reach of forthcoming experiments.

   hep-phJHEP(2021)·41 citations
2. 02*

   Anomalous dilepton production from the Dirac sea in p+p collisions

   Oscar Garcia-Montero🇩🇪

   In a recent work from the ALICE collaboration an excess of relatively soft dilepton pairs was reported in p+p collisions at $13$ TeV. In the report no satisfactory explanation was found via standard bremsstrahlung computations. In this letter, \textit{anomalous} dilepton pairs are produced non-perturbatively from the back-reaction of the vacuum to a $q\bar{q}$ pair, travelling back-to-back. The dilepton spectrum is computed by folding this rate with the cross-section for the process p+p$\to q\bar{q}$, which was computed using the framework of the Color Glass Condensate Effective Field Theory (CGC EFT) in the $k_{\perp }$-factorized limit. The resulting spectra is compatible within uncertainties with the data, and moreover, provides exciting insight into the non-perturbative phenomena that ultra-soft electromagnetic radiation can probe.

   hep-ph1 citation
3. 03*

   Nucleon off-shell structure and the free neutron valence structure from A=3 inclusive electron scattering measurements

   E.P. Segarra🇺🇸 · J.R. Pybus🇺🇸 · F. Hauenstein🇺🇸 · T. Kutz🇺🇸 · D. Higinbotham🇺🇸 · G.A. Miller🇺🇸 · E. Piasetzky🇮🇱 · A. Schmidt🇺🇸 · M. Strikman🇺🇸 · L.B. Weinstein🇺🇸 · O. Hen🇺🇸

   Understanding the differences between the distribution of quarks bound in protons and neutrons is key for constraining the mechanisms of SU(6) spin-flavor symmetry breaking in Quantum Chromodynamics (QCD). While vast amounts of proton structure measurements were done, data on the structure of the neutron is much more spars as experiments typically extract the structure of neutrons from measurements of light atomic nuclei using model-dependent corrections for nuclear effects. Recently the MARATHON collaboration performed such an extraction by measuring inclusive deep-inelastic electron-scattering on helium-3 and tritium mirror nuclei where nuclear effects are expected to be similar and thus be suppressed in the helium-3 to tritium ratio. Here we evaluate the model dependence of this extraction by examining a wide range of models including the effect of using instant-form and light-cone nuclear wave functions and several different parameterizations of nucleon modification effects, including those with and without isospin dependence. We find that, while the data cannot differentiate among the different models of nuclear structure and nucleon modification, they consistently prefer a neutron-to-proton structure function ratio of at $x_B\to 1$ of $\sim 0.4$ with a typical uncertainty ($1\sigma$) of $\sim 0.05$ and $\sim 0.10$ for isospin-independent and isospin-dependent modification models, respectively. While strongly favoring SU(6) symmetry breaking models based on perturbative QCD and the Schwinger-Dyson equation calculation, the MARATHON data do not completely rule out the scalar di-quark models if an isospin-dependent modification exist.

   hep-phnucl-exnucl-th8 citations
4. 04*

   Monophoton signals in electron-positron colliders in a simplified E6SSM

   Shaaban Khalil🇪🇬 · Stefano Moretti🇬🇧 · Diana Rojas-Ciofalo🇵🇱 · Harri Waltari🇬🇧

   The mono-photon signature emerging in an E6 Supersymmetric Standard Model (E6SSM) from inert higgsino Dark Matter (DM) is analyzed at future $e^{+}{e}^{-}$ colliders. As the inert neutral and charged higgsinos are nearly degenerate, the inert chargino is a rather long lived particle and the charged particle associated with its decay to the inert higgsino is quite soft. We show that the pair production of inert charginos at a 500 GeV electron-positron collider with an initial or final state photon is the most promising channel for probing the inert higgsino as one DM candidate within the E6SSM. We also emphasize that this signal has no chance of being observed at the Large Hadron Collider with higher energy and/or luminosity. Finally, we remark that, combined with a DM signal produced in Direct Detection experiments involving an active higgsino state as the second DM candidate, this dual evidence could point to a two-component DM version of the E6SSM.

   hep-phPRD(2021)·7 citations
5. 05*

   Minimal SU(6) Gauge-Higgs Grand Unification

   Andrei Angelescu🇩🇪 · Andreas Bally🇩🇪 · Simone Blasi🇩🇪 · Florian Goertz🇩🇪

   We present a minimal viable Gauge-Higgs Grand Unification scenario in warped space based on a $SU(6)$ bulk symmetry - unifying the gauge symmetries of the SM and their breaking sector. We show how the issue of light exotic new states is eliminated by appropriately breaking the gauge symmetry on the UV and IR boundaries by either brane scalars or gauge boundary conditions. The SM fermion spectrum is naturally reproduced including Dirac neutrinos and we compute the Higgs potential at one-loop, finding easily solutions with a realistic $m_h\sim 125$ GeV. The problem of proton decay is addressed by showing that baryon number is a hidden symmetry of the model. Among the phenomenological consequences, we highlight the presence of a scalar leptoquark and a scalar singlet. The usual $X,Y$ gauge bosons from $SU(5)$ GUTs are found at collider accessible masses.

   hep-phPRD(2022)·32 citations
6. 06*

   NLO effects for ${\Omega }_{QQQ}$ Baryons in QCD Sum Rules

   Ren-Hua Wu🇨🇳 · Yu-Sheng Zuo🇨🇳 · Ce Meng🇨🇳 · Yan-Qing Ma🇨🇳 · Kuang-Ta Chao🇨🇳

   We study the triply heavy baryons ${\Omega }_{QQQ}$ $(Q=c,b)$ in the QCD sum rules by performing the first calculation of the next-to-leading order (NLO) contribution to the perturbative QCD part of the correlation functions. Compared with the leading order (LO) result, the NLO contribution is found to be very important to the ${\Omega }_{QQQ}$. This is because the NLO not only results in a large correction, but also reduces the parameter dependence, making the Borel platform more distinct, especially for the ${\Omega }_{bbb}$ in the $\overline{\mathrm{MS}}$ scheme, where the platform appears only at NLO but not at LO. Particularly, owing to the inclusion of the NLO contribution, the renormalization schemes ($\overline{MS}$ and On-Shell) dependence and the scale dependence are significantly reduced. Consequently, after including the NLO contribution to the perturbative part in the QCD sum rules, the masses are estimated to be $4.53_{-0.11}^{+0.26}$ GeV for ${\Omega }_{ccc}$ and $14.27_{-0.32}^{+0.33}$ GeV for ${\Omega }_{bbb}$, where the results are obtained at $\mu =M_B$ with errors including those from the variation of the renormalization scale $\mu$ in the range $(0.8-1.2)M_B$. A careful study of the $\mu$ dependence in a wide range is further performed, which shows that the LO results are very sensitive to the choice of $\mu$ whereas the NLO results are considerably better. In addition to the $\mu =M_B$ result, a more stable value, (4.75-4.80) GeV, for the ${\Omega }_{ccc}$ mass is found in the range of $\mu =(1.2-2.0)M_B$, which should be viewed as a more relevant prediction in our NLO approach because of $\mu$ dependence.

   hep-phCPC(2021)·18 citations
7. 07*

   The H-graph with equal masses in terms of multiple polylogarithms

   Philipp Alexander Kreer🇩🇪 · Stefan Weinzierl🇩🇪

   The initial phase of the inspiral process of a binary system producing gravitational waves can be described by perturbation theory. At the third post-Minkowskian order a two-loop double box graph, known as H-graph contributes. We consider the case where the two objects making up the binary system have equal masses. We express all master integrals related to the equal-mass H-graph up to weight four in terms of multiple polylogarithms. We provide a numerical program which evaluates all master integrals up to weight four in the physical regions with arbitrary precision.

   hep-phgr-qchep-thPLB(2021)·19 citations
8. 08*

   Fiducial Higgs and Drell-Yan distributions at N${}^3$LL${}^{\prime }$+NNLO with RadISH

   Emanuele Re🇫🇷 · Luca Rottoli🇨🇭 · Paolo Torrielli🇮🇹

   We present state-of-the-art predictions for transverse observables relevant to colour-singlet production at the LHC, in particular the transverse momentum of the colour singlet in gluon-fusion Higgs production and in neutral Drell-Yan lepton-pair production, as well as the ${\varphi }_{\eta }^{\ast }$ observable in Drell Yan. We perform a next-to-next-to-next-to-leading logarithmic (N${}^3$LL) resummation of such observables in momentum space according to the RadISH formalism, consistently including in our prediction all constant terms of relative order ${\alpha }_s^3$ with respect to the Born, thereby achieving N${}^3$LL${}^{\prime }$ accuracy. The calculation is fully exclusive with respect to the Born kinematics, which allows the application of arbitrary fiducial selection cuts on the decay products of the colour singlet. We supplement our results with a transverse-recoil prescription, accounting for dominant classes of subleading-power corrections in a fiducial setup. The resummed predictions are matched with fixed-order differential spectra at next-to-next-to-leading order (NNLO) accuracy. A phenomenological comparison is carried out with 13 TeV LHC data relevant to the Higgs to di-photon channel, as well as to neutral Drell-Yan lepton-pair production. Overall, the inclusion of $\mathcal{O}({\alpha }_s^3)$ constant terms, and to a lesser extent of transverse-recoil effects, proves beneficial for the comparison of theoretical predictions to data, leaving a residual theoretical uncertainty in the resummation region at the 2-5% level for Drell-Yan observables, and 5-7% in Higgs production.

   hep-phhep-exJHEP(2021)·78 citations
9. 09*

   Scalar one-loop 4-point integral with one massless vertex in loop regularization

   Jin Zhang🇨🇳

   The scalar one-loop 4-point function with one massless vertex is evaluated analytically by employing the loop regularization method. According to the method a characteristic scale ${\mu }_s$ is introduced to regularize the divergent integrals. The infrared divergent parts, which take the form of ${\ln }^2({\lambda }^2/{\mu }_s^2)$ and $\ln ({\lambda }^2/{\mu }_s^2)$ as ${\mu }_s\to 0$ where $\lambda$ is a constant and expressed in terms of masses and Mandelstam variables, and the infrared stable parts are well separated. The result is shown explicitly via $44$ dilogarithms in the kinematic sector in which our evaluation is valid.

   hep-phCommun.Theor.Phys.(2021)·1 citation
10. 10*

    Anomalous muon magnetic moment, supersymmetry, naturalness, LHC search limits and the landscape

    Howard Baer🇺🇸 · Vernon Barger🇺🇸 · Hasan Serce🇺🇸

    The recent measurement of the muon anomalous magnetic moment a_\mu\equiv (g-2)_\mu/2 by the Fermilab Muon g-2 experiment sharpens an earlier discrepancy between theory and the BNL E821 experiment. We examine the predicted \Delta a_\mu\equiv a_\mu(exp)-a_\mu(th) in the context of supersymmetry with low electroweak naturalness (restricting to models which give a plausible explanation for the magnitude of the weak scale). A global analysis including LHC Higgs mass and sparticle search limits points to interpretation within the normal scalar mass hierarchy (NSMH) SUSY model wherein first/second generation matter scalars are much lighter than third generation scalars. We present a benchmark model for a viable NSMH point which is natural, obeys LHC Higgs and sparticle mass constraints and explains the muon magnetic anomaly. Aside from NSMH models, then we find the (g-2)_\mu anomaly cannot be explained within the context of natural SUSY, where a variety of data point to decoupled first/second generation scalars. The situation is worse within the string landscape where first/second generation matter scalars are pulled to values in the 10-50 TeV range. An alternative interpretation for SUSY models with decoupled scalar masses is that perhaps the recent lattice evaluation of the hadronic vacuum polarization could be confirmed which leads to a Standard Model theory-experiment agreement in which case there is no anomaly.

    hep-phPLB(2021)·61 citations
11. 11*

    Axion-Photon Conversion in Neutron Star Magnetospheres: The Role of the Plasma in the Goldreich-Julian Model

    Samuel J. Witte🇳🇱 · Dion Noordhuis🇳🇱 · Thomas D. P. Edwards🇸🇪 · Christoph Weniger🇳🇱

    The most promising indirect search for the existence of axion dark matter uses radio telescopes to look for narrow spectral lines generated from the resonant conversion of axions in the magnetospheres of neutron stars. Unfortunately, a large list of theoretical uncertainties has prevented this search strategy from being fully accepted as robust. In this work we attempt to address major outstanding questions related to the role and impact of the plasma, including: $(i)$ does refraction and reflection of radio photons in the magnetosphere induce strong inhomogeneities in the flux, $(ii)$ can refraction induce premature axion-photon de-phasing, $(iii)$ to what extent do photon-plasma interactions induce a broadening of the spectral line, $(iv)$ does the flux have a strong time dependence, and $(v)$ can radio photons sourced by axions be absorbed by the plasma. We present an end-to-end analysis pipeline based on ray-tracing that exploits a state-of-the-art auto-differentiation algorithm to propagate photons from the conversion surface to asymptotically large distances. Adopting a charge symmetric Goldreich-Julian model for the magnetosphere, we show that for reasonable parameters one should expect a strong anisotropy of the signal, refraction induced axion-photon de-phasing, significant line-broadening, a variable time-dependence of the flux, and, for large enough magnetic fields, anisotropic absorption. Our simulation code is flexible enough to serve as the basis for follow-up studies with a large range of magnetosphere models.

    hep-phastro-ph.COastro-ph.HEPRD(2021)·96 citations
12. 12*

    Global Analysis of Leptophilic Z' Bosons

    Andrzej J. Buras🇩🇪 · Andreas Crivellin🇨🇭 · Fiona Kirk🇨🇭 · Claudio Andrea Manzari🇨🇭 · Marc Montull🇨🇭

    New neutral heavy gauge bosons ($Z^{\prime }$) are predicted within many extensions of the Standard Model. While in case they couple to quarks the LHC bounds are very stringent, leptophilic $Z^{\prime }$ bosons (even with sizable couplings) can be much lighter and therefore lead to interesting quantum effects in precision observables (like $(g-2{)}_{\mu }$) and generate flavour violating decays of charged leptons. In particular, $\ell \to {\ell }^{\prime }\nu \bar{\nu }$ decays, anomalous magnetic moments of charged leptons, $\ell \to {\ell }^{\prime }\gamma$ and $\ell \to 3{\ell }^{\prime }$ decays place stringent limits on leptophilic $Z^{\prime }$ bosons. Furthermore, in case of mixing $Z^{\prime }$ with the SM $Z$, $Z$ pole observables are affected. In light of these many observables we perform a global fit to leptophilic $Z^{\prime }$ models with the main goal of finding the bounds for the $Z^{\prime }$ couplings to leptons. To this end we consider a number of scenarios for these couplings. While in generic scenarios correlations are weak, this changes once additional constraints on the couplings are imposed. In particular, if one considers an $L_{\mu }-L_{\tau }$ symmetry broken only by left-handed rotations, or considers the case of $\tau -\mu$ couplings only. In the latter setup, on can explain the $(g-2{)}_{\mu }$ anomaly and the hint for lepton flavour universality violation in $\tau \to \mu \nu \bar{\nu }/\tau \to e\nu \bar{\nu }$ without violating bounds from electroweak precision observables.

    hep-phhep-exnucl-exnucl-thJHEP(2021)·82 citations
13. 13*

    Light, Long-Lived $B-L$ Gauge and Higgs Bosons at the DUNE Near Detector

    P. S. Bhupal Dev🇺🇸 · Bhaskar Dutta🇺🇸 · Kevin J. Kelly🇺🇸 · Rabindra N. Mohapatra🇺🇸 · Yongchao Zhang🇨🇳

    The low-energy $U(1{)}_{B-L}$ gauge symmetry is well-motivated as part of beyond Standard Model physics related to neutrino mass generation. We show that a light $B-L$ gauge boson $Z{}^{\prime }$ and the associated $U(1{)}_{B-L}$-breaking scalar $\phi$ can both be effectively searched for at high-intensity facilities such as the near detector complex of the Deep Underground Neutrino Experiment (DUNE). Without the scalar $\phi$, the $Z{}^{\prime }$ can be probed at DUNE up to mass of 1 GeV, with the corresponding gauge coupling $g_{BL}$ as low as $10^{-9}$. In the presence of the scalar $\phi$ with gauge coupling to $Z{}^{\prime }$, the DUNE capability of discovering the gauge boson $Z{}^{\prime }$ can be significantly improved, even by one order of magnitude in $g_{BL}$, due to additional production from the decay $\phi \to Z{}^{\prime }Z{}^{\prime }$. The DUNE sensitivity is largely complementary to other long-lived $Z{}^{\prime }$ searches at beam-dump facilities such as FASER and SHiP, as well as astrophysical and cosmological probes. On the other hand, the prospects of detecting $\phi$ itself at DUNE are to some extent weakened in presence of $Z{}^{\prime }$, compared to the case without the gauge interaction.

    hep-phhep-exJHEP(2021)·32 citations
14. 14*

    Jülich-Bonn-Washington Model for Pion Electroproduction Multipoles

    Maxim Mai🇺🇸 · Michael Döring🇺🇸 · Carlos Granados🇺🇸 · Helmut Haberzettl🇺🇸 · Ulf-G. Meißner🇩🇪 · Deborah Rönchen🇩🇪 · Igor Strakovsky🇺🇸 · Ron Workman🇺🇸

    Pion electroproduction off the proton is analyzed in a new framework based on a general parametrization of transition amplitudes, including constraints from gauge invariance and threshold behavior. Data with energies $1.13\mathrm{GeV}<W<1.6\mathrm{GeV}$ and $Q^2$ below $6{\mathrm{GeV}}^2$ are included. The model is an extension of the latest Jülich-Bonn solution incorporating constraints from pion-induced and photoproduction data. Performing large scale fits ($\sim 10^5$ data) we find a set of solutions with ${\chi }_{\mathrm{dof}}^2=1.69-1.81$ which allows us to assess the systematic uncertainty of the approach.

    ↳ nucl-thhep-phnucl-exPRC(2021)·46 citations
15. 15*

    Supersymmetric theories and graphene

    Antonio Gallerati🇮🇹

    We discuss a 1+2 dimensional model with unconventional supersymmetry at the boundary of an AdS${}_4$, \,$\mathcal{N}$-extended supergravity. The resulting features of the supersymmetric boundary open the possibility of describing the electronic properties of graphene-like 2D materials at the Dirac points \textbf{K} and \textbf{K'}, exploiting a top-down approach. The Semenoff and Haldane-type masses entering the corresponding Dirac equations can be then extrapolated from the geometric parameters of the model describing the substrate.

    ↳ hep-thcond-mat.mes-hallcond-mat.mtrl-scihep-ph+1PoS(2021)·7 citations
16. 16*

    Supernova Fallback as Origin of Neutron Star Spins and Spin-kick Alignment

    H.-Thomas Janka (1)🇩🇪 · Annop Wongwathanarat (1)🇩🇪 · Michael Kramer (2,3) ((1) MPI Astrophysics, Garching, (2) MPI Radioastronomie, Bonn, (3) University of Manchester)🇩🇪

    Natal kicks and spins are characteristic properties of neutron stars (NSs) and black holes (BHs). Both offer valuable clues to dynamical processes during stellar core collapse and explosion. Moreover, they influence the evolution of stellar multiple systems and the gravitational-wave signals from their inspiral and merger. Observational evidence of possibly generic spin-kick alignment has been interpreted as indication that NS spins are either induced with the NS kicks or inherited from progenitor rotation, which thus might play a dynamically important role during stellar collapse. Current three-dimensional supernova simulations suggest that NS kicks are transferred in the first seconds of the explosion, mainly by anisotropic mass ejection and, on a secondary level, anisotropic neutrino emission. In contrast, the NS spins are only determined minutes to hours later by angular momentum associated with fallback of matter that does not become gravitationally unbound in the supernova. Here, we propose a novel scenario to explain spin-kick alignment as a consequence of tangential vortex flows in the fallback matter that is accreted mostly from the direction of the NS's motion. For this effect the initial NS kick is crucial, because it produces a growing offset of the NS away from the explosion center, thus promoting onesided accretion. In this new scenario conclusions based on traditional concepts are reversed. For example, pre-kick NS spins are not required, and rapid progenitor-core rotation can hamper spin-kick alignment. We also discuss implications for natal BH kicks and the possibility of tossing the BH's spin axis during its formation.

    ↳ astro-ph.HEhep-phApJ(2022)·86 citations
17. 17*

    Multipole analysis on gyroscopic precession in $f(R)$ gravity with irreducible Cartesian tensors

    Bofeng Wu🇨🇳 · Xin Zhang🇨🇳

    In $f(R)$ gravity, the metric, presented in the form of the multipole expansion, for the external gravitational field of a spatially compact supported source up to $1/c^3$ order is provided, where $c$ is the velocity of light in vacuum. The metric consists of General Relativity-like part and $f(R)$ part, where the latter is the correction to the former in $f(R)$ gravity. At the leading pole order, the metric can reduce to that for a point-like or ball-like source. For the gyroscope moving around the source without experiencing any torque, the multipole expansions of its spin's angular velocities of gravitoelectric-type precession, gravitomagnetic-type precession, $f(R)$ precession, and Thomas precession are all derived. The first two types of precession are collectively called General Relativity-like precession, and the $f(R)$ precession is the correction in $f(R)$ gravity. At the leading pole order, these expansions can recover the results for the gyroscope moving around a point-like or ball-like source. If the gyroscope has a nonzero four-acceleration, its spin's total angular velocity of precession up to $1/c^3$ order in $f(R)$ gravity is the same as that in General Relativity.

    ↳ gr-qcastro-ph.COhep-phhep-thPRD(2021)·5 citations
18. 18*

    Two Particles with Zero-Range Interaction in a Magnetic Field

    Johannes Kirscher🇬🇧 · Brian C. Tiburzi🇺🇸

    Energy levels are investigated for two charged particles possessing an attractive, momentum-independent, zero-range interaction in a uniform magnetic field. A transcendental equation governs the spectrum, which is characterized by a collective Landau-level quantum number incorporating both center-of-mass and relative degrees of freedom. Results are obtained for a system of one charged and one neutral particle, with the interaction chosen to produce a bound state in vanishing magnetic field. Beyond deriving the weak-field expansion of the energy levels, we focus on non-perturbative aspects. In the strong-field limit, or equivalently for a system in the unitary limit, a single bound level with universal binding energy exists. By contrast, excited states are resonances that disappear into the continuum as the magnetic field is raised beyond critical values. A hyperbola is derived that approximates the number of bound levels as a function of the field strength remarkably well.

    ↳ nucl-thhep-lathep-phPLB(2021)·1 citation
19. 19*

    Intermediate mass dileptons as pre-equilibrium probes in heavy ion collisions

    Maurice Coquet🇫🇷 · Xiaojian Du🇩🇪 · Jean-Yves Ollitrault🇫🇷 · Soeren Schlichting🇩🇪 · Michael Winn🇫🇷

    The production of dileptons with an invariant mass in the range 1 GeV < M < 5 GeV provides unique insight into the approach to thermal equilibrium in ultrarelativistic nucleus-nucleus collisions. In this mass range, they are produced through the annihilation of quark-antiquark pairs in the early stages of the collision. They are sensitive to the anisotropy of the quark momentum distribution, and also to the quark abundance, which is expected to be underpopulated relative to thermal equilibrium. We take into account both effects based on recent theoretical developments in QCD kinetic theory, and study how the dilepton mass spectrum depends on the shear viscosity to entropy ratio that controls the equilibration time. We evaluate the background from the Drell-Yan process and argue that future detector developments can suppress the additional background from semileptonic decays of heavy flavors.

    ↳ nucl-thhep-exhep-phnucl-exPLB(2021)·58 citations
20. 20*

    Direct Detection of Dark Matter -- APPEC Committee Report

    Julien Billard🇫🇷 · Mark Boulay🇨🇦 · Susana Cebrián🇪🇸 · Laura Covi🇩🇪 · Giuliana Fiorillo🇮🇹 · Anne Green🇬🇧 · Joachim Kopp🇨🇭 · Béla Majorovits🇩🇪 · Kimberly Palladino🇺🇸 · Federica Petricca🇩🇪 · Leszek Roszkowski (chair)🇵🇱 · Marc Schumann🇩🇪

    This Report provides an extensive review of the experimental programme of direct detection searches of particle dark matter. It focuses mostly on European efforts, both current and planned, but does it within a broader context of a worldwide activity in the field. It aims at identifying the virtues, opportunities and challenges associated with the different experimental approaches and search techniques. It presents scientific and technological synergies, both existing and emerging, with some other areas of particle physics, notably collider and neutrino programmes, and beyond. It addresses the issue of infrastructure in light of the growing needs and challenges of the different experimental searches. Finally, the Report makes a number of recommendations from the perspective of a long-term future of the field. They are introduced, along with some justification, in the opening Overview and Recommendations section and are next summarised at the end of the Report. Overall, we recommend that the direct search for dark matter particle interactions with a detector target should be given top priority in astroparticle physics, and in all particle physics, and beyond, as a positive measurement will provide the most unambiguous confirmation of the particle nature of dark matter in the Universe.

    ↳ hep-exastro-ph.HEhep-phRept.Prog.Phys.(2022)·499 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.