Mon·Oct 23, 2017Monday·October 23, 2017

1. 01*

   Inflation and High-Scale Supersymmetry with an EeV Gravitino

   Emilian Dudas🇫🇷 · Tony Gherghetta🇺🇸 · Yann Mambrini🇫🇷 · Keith A. Olive🇺🇸

   We consider inflation and supersymmetry breaking in the context of a minimal model of supersymmetry in which the only "low" energy remnant of supersymmetry is the gravitino with a mass of order an EeV. In this theory, the supersymmetry breaking scale is above the inflaton mass, m ~ 3 x 10^{13} GeV, as are all sfermion and gaugino masses. In particular, for a no-scale formulation of Starobinsky-like inflation using the volume modulus T, we show that inflation can be accommodated even when the supersymmetry breaking scale is very large. Reheating is driven through a gravitational coupling to the two Higgs doublets and is enhanced by the large mu-parameter. This leads to gravitino cold dark matter where the mass is constrained to be in the range 0.1 EeV $\lesssim m_{3/2}\lesssim 1000$ EeV.

   hep-phPRD(2017)·72 citations
2. 02*

   Constraints on the hadronic spectrum from Lattice QCD

   Paolo Parotto🇺🇸

   The spectrum of hadronic resonances continually receives updates from the Particle Data Group, which lists every state with a status representing how established the state is. Moreover, the existence of additional states is predicted by relativistic quark models. It has been suggested that further states might need to be included in the hadronic spectrum in order to improve the agreement between the hadron resonance gas model predictions and lattice QCD data. Such an inclusion would also affect the results of many areas of heavy-ion collision physics that make use of hadronic degrees of freedom, such as hydrodynamical simulations afterburners. However, for some selected observables, the inclusion of further states worsens the agreement with the lattice results. We propose new observables, sensitive to the spectrum content divided by quantum numbers, which allow us to gauge the contribution of additional states. The comparison of Lattice QCD results and predictions from the Hadron Resonance Gas model for these observables, helps to clarify the situation and determine how many, and which new states are needed.

   hep-phhep-latnucl-thJ.Phys.Conf.Ser.(2018)·0 citations
3. 03*

   The benefits of a near detector for JUNO

   David V. Forero🇧🇷 · Rebekah Hawkins🇺🇸 · Patrick Huber🇺🇸

   It has been proposed to determine the mass hierarchy of neutrinos by exploiting the beat between the oscillation frequencies corresponding to the two neutrino mass squared differences. JUNO is based on this concept and uses a large liquid scintillator detector at a distance of 53km from a powerful nuclear reactor complex. We argue that the micro-structure present in antineutrino fluxes from nuclear reactors makes it essential to experimentally determine a reference spectrum with an energy resolution very similar to the one of JUNO.

   hep-phhep-exphysics.ins-det26 citations
4. 04*

   Status and potentialities of the JUNO experiment

   V. Antonelli🇮🇹 · L. Miramonti🇮🇹

   One of the main open issues of neutrino physics is the determination of the mass hierarchy, discriminating between the two possible ordering of the mass eigenvalues, known as Normal and Inverted Hierarchies. The solution of this puzzle would have a significant impact both on elementary particle physics and astrophysics. A possible way to investigate the problem is the study, with medium baseline reactor antineutrinos, of the mass dependent corrections to inverse $\beta$ decays. This is the idea pursued by JUNO, a multipurpose underground liquid scintillator experiment that will start data taking in very few years from now. The main characteristics and the status of the experiment are discussed here, together with its rich physics program. We focus in particular on the potentiality for mass hierarchy determination, the main goal of the experiment, on the oscillation parameters accurate measurements and on the supernova and solar neutrinos and geoneutrino studies.

   hep-phhep-thphysics.ins-detPoS(2018)·5 citations
5. 05*

   Search for charged lepton flavor violation of vector mesons in BLMSSM model

   Xing-Xing Dong🇨🇳 · Shu-Min Zhao🇨🇳 · Jing-Jing Feng🇨🇳 · Guo-Zhu Ning🇨🇳 · Jian-Bin Chen🇨🇳 · Hai-Bin Zhang🇨🇳 · Tai-Fu Feng🇨🇳

   We analyze the charged lepton flavor violating (CLFV) decays of vector mesons $V\to l_i^{\pm }{l}_j^{\mp }$ with $V\in \{\varphi ,J/\Psi ,{\rm Y},{\rho }^0,\omega \}$ in BLMSSM model. This new model is introduced as an supersymmetric extension of Standard Model (SM), where local gauged baryon number B and lepton number L are considered. The numerical results indicate BLMSSM model can produce significant contributions to such two-body CLFV decays. And the branching ratios for these CLFV processes can easily reach the present experimental upper bounds. Therefore, searching for CLFV processes of vector mesons may be an effective channels to study new physics.

   hep-phPRD(2018)·9 citations
6. 06*

   X(3872) as a molecular $D{\bar{D}}^{\ast }$ state in the Bethe-Salpeter equation approach

   Zhen-Yang Wang · Jing-Juan Qi🇨🇳 · Chao Wang · Xin-Heng Guo🇨🇳

   We discuss the possibility that the X(3872) can be a $D{\bar{D}}^{\ast }$ molecular bound state in the Bethe-Salpeter equation approach in the ladder and instantaneous approximations. We show that the $D{\bar{D}}^{\ast }$ bound state with quantum numbers $J^{PC}=1^{++}$ exists. We also calculate the decay width of $X(3872)\to \gamma J/\psi$ channel and compare our result with those from previous calculations.

   hep-phPRD(2018)·14 citations
7. 07*

   Jet Quenching in The Most Vortical Fluid: A Holographic Approach

   Brett McInnes🇸🇬

   The STAR collaboration at the RHIC facility has recently announced the exciting discovery of direct evidence for extremely large vorticity in the Quark-Gluon Plasma generated in peripheral collisions, seen in the form of global polarization of $\Lambda$ and $\bar{\Lambda }$ hyperons. This prompts the question: does this vorticity have any effect on other observed phenomena, such as jet quenching? Using a simple gauge-gravity model, we suggest that such an effect may be detectable, in data from near-future experiments, as a reduction in the jet quenching parameter. This is predicted to be most prominent in collisions corresponding to a narrow range of centralities around $10\%$. The relative reduction (compared to collisions at zero or, alternatively, large centrality) is predicted to behave in an unexpected and characteristic manner: the model suggests that it is independent of the impact energy.

   hep-phhep-thnucl-th7 citations
8. 08*

   Top quark mass studies with $t\bar{t}j$ at the LHC

   G. Bevilacqua🇭🇺 · H. B. Hartanto🇬🇧 · M. Kraus🇩🇪 · M. Schulze🇩🇪 · M. Worek🇩🇪

   A precise measurement of the top quark mass, a fundamental parameter of the Standard Model, is among the most important goals of top quark studies at the Large Hadron Collider. Apart from the standard methods, numerous new observables and reconstruction techniques are employed to improve the overall precision and to provide different sensitivities to various systematic uncertainties. Recently, the normalised inverse invariant mass distribution of the $t\bar{t}$ system and the leading extra jet not coming from the top quark decays has been proposed for the $pp\to t\bar{t}j$ production process, denoted as $\mathcal{R}(m_t^{pole},{\rho }_s)$. In this paper, a thorough study of different theoretical predictions for this observable, however, with top quark decays included, is carried out. We focus on fixed order NLO QCD calculations for the di-lepton top quark decay channel at the LHC with $\sqrt{s}=13$ TeV. First, the impact on the extraction of $m_t$ is investigated and afterwards the associated uncertainties are quantified. In one approach we include all interferences, off-shell effects and non-resonant backgrounds. This is contrasted with a different approach with top quark decays in the narrow width approximation. In the latter case, two cases are employed: NLO QCD corrections to the $pp\to t\bar{t}j$ production process with leading order decays and the more sophisticated case with QCD corrections and jet radiation present also in top quark decays. The top quark mass sensitivity of $\mathcal{R}(m_t^{pole},{\rho }_s)$ is investigated and compared to other observables: the invariant mass of the top anti-top pair, the minimal invariant mass of the $b$-jet and a charged lepton as well as the total transverse momentum of the $t\bar{t}j$ system.

   hep-phJHEP(2018)·45 citations
9. 09*

   Anomalous neutral gauge boson interactions and simplified models

   Tyler Corbett🇦🇺 · Matthew J. Dolan🇦🇺 · Christoph Englert🇬🇧 · Karl Nordström🇬🇧

   Trilinear $Z$ boson interactions are sensitive probes both of new sources of $CP$ violation in physics Beyond the Standard Model and of new particle thresholds. Measurements of trilinear $Z$ interactions are typically interpreted in the frameworks of anomalous couplings and effective field theory, both of which require care in interpretation. To obtain a quantitative picture of the power of these measurements when interpreted in a TeV-scale context, we investigate the anatomy of $ZZZ$ interactions and consider two minimal and perturbative simplified models which induce such interactions through new scalar and fermion loops at the weak scale, focusing on $ZZ$ and vector boson fusion-induced $Zjj$ production at the LHC and $ZZ$ production at a future $e^{+}{e}^{-}$ collider. We show that both threshold and non-threshold effects often are small compared to the sensitivity of the LHC, while the increased sensitivity of a future lepton collider should allow us to constrain such scenarios through associated electroweak precision effects complementary to direct searches at hadron colliders.

   hep-phhep-exPRD(2018)·12 citations
10. 10*

    Collider production of Electroweak resonances from photon-photon states

    Rafael L. Delgado🇪🇸 · Antonio Dobado🇪🇸 · Miguel Espada🇪🇸 · Felipe J. Llanes-Estrada🇪🇸 · Ivan Leon Merino (University of Madrid-Complutense)🇪🇸

    We estimate production cross sections for 2-body resonances of the Electroweak Symmetry Breaking sector (in $W_L{W}_L$ and $Z_L{Z}_L$ rescattering) from $\gamma \gamma$ scattering. We employ unitarized Higgs Effective Field Theory amplitudes previously computed coupling the two photon channel to the EWSBS. We work in the Effective Photon Approximation and examine both $e^{-}{e}^{+}$ collisions at energies of order 1-2 TeV (as relevant for future lepton machines) and $pp$ collisions at LHC energies. Dynamically generating a spin-0 resonance around 1.5 TeV (by appropriately choosing the parameters of the effective theory) we find that the differential cross section per unit $s$, $p_t^2$ is of order 0.01 fbarn/TeV${}^4$ at the LHC. Injecting a spin-2 resonance around 2 TeV we find an additional factor 100 suppression for $p_t$ up to 200 GeV. The very small cross sections put these $\gamma \gamma$ processes, though very clean, out of reach of immediate future searches.

    hep-phJHEP(2018)·10 citations
11. 11*

    Precision calculations for h->WW/ZZ->4 fermions in the Two-Higgs-Doublet Model with PROPHECY4F

    Lukas Altenkamp🇩🇪 · Stefan Dittmaier🇩🇪 · Heidi Rzehak🇩🇰

    We have calculated the next-to-leading-order electroweak and QCD corrections to the decay processes h -> WW/ZZ -> 4 fermions of the light CP-even Higgs boson h of various types of Two-Higgs-Doublet Models (Types I and II, "lepton-specific" and "flipped" models). The input parameters are defined in four different renormalization schemes, where parameters that are not directly accessible by experiments are defined in the MSbar scheme. Numerical results are presented for the corrections to partial decay widths for various benchmark scenarios previously motivated in the literature, where we investigate the dependence on the MSbar renormalization scale and on the choice of the renormalization scheme in detail. We find that it is crucial to be precise with these issues in parameter analyses, since parameter conversions between different schemes can involve sizeable or large corrections, especially in scenarios that are close to experimental exclusion limits or theoretical bounds. It even turns out that some renormalization schemes are not applicable in specific regions of parameter space. Our investigation of differential distributions shows that corrections beyond the Standard Model are mostly constant offsets induced by the mixing between the light and heavy CP-even Higgs bosons, so that differential analyses of h -> 4f decay observables do not help to identify Two-Higgs-Doublet Models. Moreover, the decay widths do not significantly depend on the specific type of those models. The calculations are implemented in the public Monte Carlo generator PROPHECY4F and ready for application.

    hep-phJHEP(2018)·50 citations
12. 12*

    Novel subjet observables for jet quenching in heavy-ion collisions

    Liliana Apolinário🇵🇹 · José Guilherme Milhano🇵🇹 · Mateusz Ploskon🇺🇸 · Xiaoming Zhang🇨🇳

    Using a novel observable that relies on the momentum difference of the two most energetic subjets within a jet $\Delta S_{12}$ we study the internal structure of high-energy jets simulated by several Monte Carlo event generators that implement the partonic energy-loss in a dense partonic medium. Based on inclusive jet and di-jet production we demonstrate that $\Delta S_{12}$ is an effective tool to discriminate between different models of jet modifications over a broad kinematic range. The new quantity, while preserving the colinear and infrared safety of modern jet algorithms, it is experimentally attractive because of its inherent resiliance against backgrounds of heavy-ion collisions.

    hep-phhep-exnucl-thEPJC(2018)·38 citations
13. 13*

    Calculating off-shell one-loop amplitudes for $k_T$-dependent factorization: a proof of concept

    A. van Hameren🇵🇱

    A method to define and calculate one-loop amplitudes with an off-shell space-like, or $k_T$-dependent, gluon is presented. It introduces a practical regularization to deal with the divergencies that appear due to linear denominators, and can be applied to arbitarary partonic scattering processes.

    hep-ph20 citations
14. 14*

    Resonances and loops: scale interplay in the Higgs effective field theory

    J.J. Sanz-Cillero🇪🇸

    As there seems to be a large mass gap between the SM and new physics particles, the EFT framework emerges as the natural approach for the analysis and interpretation of collider data. However, this large gap and the fact that (so far) all the measured interactions look pretty much SM-like does not imply that the linear Higgs representation as a complex doublet $\varphi$ in the SMEFT is always appropriate. Although there is a wide class of SM extensions that accept this linear description, this realization does not always provide a good perturbative expansion. The HEFT and its organization according to a chiral expansion cures these issues. Path integral functional methods allow one to compute the corrections to the NLO effective action: at tree level, the heavy resonances only contribute to the $O(p^4)$ low-energy couplings (or higher) according to a pattern that depends on their quantum numbers and is suppressed by their masses; at the one-loop level, all the new-physics corrections go to the $O(p^4)$ effective action (or higher) and are suppressed by an intrinsic scale of the LO HEFT Lagrangian, which has been related in recent times with the curvature of the manifold of scalar fields (being the SM its flat limit and having the HEFT effective action an expansion in the curvature). This two suppression scales (resonance masses and non-linearity/curvature) compete at NLO and may, in principle, be very different/similar depending on the particular BSM scenario and the observable at hand. Likewise, experiments do not tell us yet whether $O(p^4)$ loops are essentially negligible or not, as it is shown with a couple of examples. In summary, the HEFT extends the range of applicability of the SMEFT, which, although justified for a pretty wide class of BSM scenarios, introduces a bias in the data analyses and does not provide the most general EFT framework.

    hep-phPoS(2017)·6 citations
15. 15*

    Rare $Z$ Boson Decays to a Hidden Sector

    Nikita Blinov🇺🇸 · Eder Izaguirre🇺🇸 · Brian Shuve🇺🇸

    We demonstrate that rare decays of the Standard Model $Z$ boson can be used to discover and characterize the nature of new hidden-sector particles. We propose new searches for these particles in soft, high-multiplicity leptonic final states at the Large Hadron Collider. The proposed searches are sensitive to low-mass particles produced in $Z$ decays, and we argue that these striking signatures can shed light on the hidden-sector couplings and mechanism for mass generation.

    hep-phhep-exPRD(2018)·19 citations
16. 16*

    The chromo-polarizabilities of a heavy quark at weak coupling

    Daniel Moreno🇪🇸 · Antonio Pineda🇪🇸

    We obtain the renormalization group improved expressions of the Wilson coefficients of the HQET Lagrangian with leading logarithmic approximation to $\mathcal{O}(1/m^3)$ for the spin-independent sector, which includes the heavy quark chromo-polarizabilites. Our analysis includes the effects induced by spectator quarks. We observe that the numerical impact of these logarithms is very large in most cases.

    hep-phPRD(2018)·12 citations
17. 17*

    Magnetic moments of the spin-$\frac{3}{2}$ doubly heavy baryons

    Lu Meng🇨🇳 · Hao-Song Li🇨🇳 · Zhan-Wei Liu🇨🇳 · Shi-Lin Zhu🇨🇳

    In this work, we investigate the chiral corrections to the magnetic moments of the spin-$\frac{3}{2}$ doubly charmed baryons systematically up to next-to-next-to-leading order with the heavy baryon chiral perturbation theory. The numerical results are given up to next-to-leading order: ${\mu }_{{\Xi }_{cc}^{\ast ++}}=1.72{\mu }_N$, ${\mu }_{{\Xi }_{cc}^{\ast +}}=-0.09{\mu }_N$, ${\mu }_{{\Omega }_{cc}^{\ast +}}=0.99{\mu }_N$. As a by-product, we have also calculated the magnetic moments of the spin-$\frac{3}{2}$ doubly bottom baryons and charmed bottom baryons: ${\mu }_{{\Xi }_{bb}^{\ast 0}}=0.63{\mu }_N$, ${\mu }_{{\Xi }_{bb}^{\ast -}}=-0.79{\mu }_N$, ${\mu }_{{\Omega }_{bb}^{\ast -}}=0.12{\mu }_N$, ${\mu }_{{\Xi }_{bc}^{\ast +}}=1.12{\mu }_N$, ${\mu }_{{\Xi }_{bc}^{\ast 0}}=-0.40{\mu }_N$, ${\mu }_{{\Omega }_{bc}^{\ast 0}}=0.56{\mu }_N$.

    hep-phhep-exhep-latnucl-thEPJC(2017)·44 citations
18. 18*

    Magnetic catalysis and inverse magnetic catalysis in (2+1)-dimensional gauge theories from holographic models

    Diego M. Rodrigues🇧🇷 · Eduardo Folco Capossoli🇧🇷 · Henrique Boschi-Filho🇧🇷

    We study the deconfinement phase transition in $(2+1)$-dimensional holographic $SU(N)$ gauge theories in the presence of an external magnetic field from the holographic hard and soft wall models. We obtain exact solutions for the critical temperature of the deconfinement transition for any range of magnetic field. As a consequence, we find a critical magnetic field $(B_c)$, in which the critical temperature $(T_c)$ vanishes; for $B<B_c$ we have an inverse magnetic catalysis and for $B>B_c$ we have a magnetic catalysis.

    ↳ hep-thhep-lathep-phPRD(2018)·26 citations
19. 19*

    $D\to Kl\nu$ semileptonic decay using lattice QCD with HISQ at physical pion masses

    Bipasha Chakraborty🇬🇧 · Christine Davies🇬🇧 · Jonna Koponen🇮🇹 · G Peter Lepage🇺🇸

    The quark flavor sector of the Standard Model is a fertile ground to look for new physics effects through a unitarity test of the Cabbibo-Kobayashi-Maskawa (CKM) matrix. We present a lattice QCD calculation of the scalar and the vector form factors (over a large $q^2$ region including $q^2=0$) associated with the $D\to Kl\nu$ semi-leptonic decay. This calculation will then allow us to determine the central CKM matrix element, $V_{cs}$ in the Standard Model, by comparing the lattice QCD results for the form factors and the experimental decay rate. This form factor calculation has been performed on the $N_f=2+1+1$ MILC HISQ ensembles with the physical light quark masses.

    ↳ hep-lathep-exhep-phEPJ Web Conf.(2018)·3 citations
20. 20*

    Leading isospin-breaking effects on the lattice

    D. Giusti🇮🇹

    Isospin is an almost exact symmetry of strong interactions and the corrections to the isosymmetric limit are, in general, at the percent level. For several hadronic quantities, such as pseudoscalar meson masses or the kaon leptonic and semileptonic decay rates, these effects are of the same order of magnitude of the errors quoted in nowadays lattice calculations and cannot be neglected any longer. In this talk I discuss some recent results for the pseudoscalar meson spectrum obtained by the RM123 Collaboration including isospin breaking corrections in first principles lattice simulations.

    ↳ hep-lathep-phNuovo Cim.C(2018)·1 citation
21. 21*

    AdS/QCD duality and the quarkonia holographic information entropy

    Nelson R. F. Braga🇧🇷 · Roldao da Rocha🇧🇷

    Bottomonium and charmonium, representing quarkonia states, are scrutinized under the point of view of the information theory, in the AdS/QCD holographic setup. A logarithmic measure of information, comprised by the configurational entropy, is here employed to quantitatively study quarkonia radially excited S-wave states. The configurational entropy provides data regarding the relative dominance and the abundance of the bottomonium and charmonium states, whose underlying information is more compressed, in the Shannon's theory meaning. The derived configurational entropy, therefore, identifies the lower phenomenological prevalence of higher S-wave resonances and higher masses quarkonia in Nature.

    ↳ hep-thhep-phPLB(2018)·64 citations
22. 22*

    Inflaton fragmentation in E-models of cosmological $\alpha$-attractors

    Fuminori Hasegawa🇯🇵 · Jeong-Pyong Hong🇯🇵

    Cosmological $\alpha$-attractors are observationally favored due to the asymptotic flatness of the potential. Since its flatness induces the negative pressure even after inflation, the coherent oscillation of the inflaton field could fragment into quasi-stable localized objects called I-balls (or "oscillons"). We investigated the possibility of I-ball formation in E-models of $\alpha$-attractors. Using linear analysis and the lattice simulations, we find that for $\alpha \lesssim 10^{-3}$, the inflaton feels the negative pressure long enough and actually fragments into I-balls.

    ↳ astro-ph.COhep-phPRD(2018)·24 citations
23. 23*

    Importance of non-flow in mixed-harmonic multi-particle correlations in small collision systems

    Peng Huo🇺🇸 · Katarina Gajdosova🇩🇰 · Jiangyong Jia🇺🇸 · You Zhou🇩🇰

    Recently CMS Collaboration measured mixed-harmonic four-particle azimuthal correlations, known as symmetric cumulants SC(n,m), in pp and pPb collisions, and interpreted the non-zero SC(n,m) as evidence for long-range collectivity in these small collision systems. Using the PYTHIA and HIJING models which do not have genuine long-range collectivity, we show that the CMS results, obtained with standard cumulant method, could be dominated by non-flow effects associated with jet and dijets, especially in $pp$ collisions. We show that the non-flow effects are largely suppressed using the recently proposed subevent cumulant methods by requiring azimuthal correlation between two or more pseudorapidity ranges. We argue that the reanalysis of SC(n,m) using the subevent method in experiments is necessary before they can used to provide further evidences for a long-range multi-particle collectivity and constraints on theoretical models in small collision systems.

    ↳ nucl-exhep-phnucl-thPLB(2018)·53 citations
24. 24*

    Decoupling of charm beyond leading order

    Francesco Knechtli🇩🇪 · Tomasz Korzec🇩🇪 · Björn Leder🇩🇪 · Graham Moir🇬🇧

    We study the effective theory of decoupling of a charm quark at low energies. We do this by simulating a model, QCD with two mass-degenerate charm quarks. At leading order the effective theory is a pure gauge theory. By computing ratios of hadronic scales we have direct access to the power corrections in the effective theory. We show that these corrections follow the expected leading behavior, which is quadratic in the inverse charm quark mass.

    ↳ hep-lathep-phEPJ Web Conf.(2018)·5 citations
25. 25*

    UV conformal window for asymptotic safety

    Andrew D. Bond🇬🇧 · Daniel F. Litim🇬🇧 · Gustavo Medina Vazquez🇬🇧 · Tom Steudtner🇬🇧

    Interacting fixed points in four-dimensional gauge theories coupled to matter are investigated using perturbation theory up to three loop order. It is shown how fixed points, scaling exponents, and anomalous dimensions are obtained as a systematic power series in a small parameter. The underlying ordering principle is explained and contrasted with conventional perturbation theory and Weyl consistency conditions. We then determine the conformal window with asymptotic safety from the complete next-to-next-to-leading order in perturbation theory. Limits for the conformal window arise due to fixed point mergers, the onset of strong coupling, or vacuum instability. A consistent picture is uncovered by comparing various levels of approximation. The theory remains perturbative in the entire conformal window, with vacuum stability dictating the tightest constraints. We also speculate about a secondary conformal window at strong coupling and estimate its lower limit. Implications for model building and cosmology are indicated.

    ↳ hep-thhep-phPRD(2018)·54 citations
26. 26*

    Physics Case for the 250 GeV Stage of the International Linear Collider

    Keisuke Fujii🇯🇵 · Christophe Grojean🇩🇪 · Michael E. Peskin🇺🇸 · Tim Barklow🇺🇸 · Yuanning Gao🇨🇳 · Shinya Kanemura🇯🇵 · Hyungdo Kim🇰🇷 · Jenny List🇩🇪 · Mihoko Nojiri🇯🇵 · Maxim Perelstein🇺🇸 · Roman Poeschl🇫🇷 · Juergen Reuter🇩🇪 and 12 other authors

    The International Linear Collider is now proposed with a staged machine design, with the first stage at 250 GeV with a luminosity goal of 2 ab-1. In this paper, we review the physics expectations for this machine. These include precision measurements of Higgs boson couplings, searches for exotic Higgs decays, other searches for particles that decay with zero or small visible energy, and measurements of e+e- annihilation to W+W- and 2-fermion states with improved sensitivity. A summary table gives projections for the achievable levels of precision based on the latest full simulation studies.

    ↳ hep-exhep-ph249 citations
27. 27*

    Parton distribution functions on the lattice and in the continuum

    Joseph Karpie🇺🇸 · Kostas Orginos🇺🇸 · Anatoly Radyushkin🇺🇸 · Savvas Zafeiropoulos🇩🇪

    Ioffe-time distributions, which are functions of the Ioffe-time $\nu$, are the Fourier transforms of parton distribution functions with respect to the momentum fraction variable $x$. These distributions can be obtained from suitable equal time, quark bilinear hadronic matrix elements which can be calculated from first principles in lattice QCD, as it has been recently argued. In this talk I present the first numerical calculation of the Ioffe-time distributions of the nucleon in the quenched approximation.

    ↳ hep-lathep-phnucl-thEPJ Web Conf.(2018)·42 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.