Thu·Mar 29, 2018Thursday·March 29, 2018

1. 01*

   Les Houches 2017: Physics at TeV Colliders New Physics Working Group Report

   G. Brooijmans🇺🇸 · M. Dolan🇦🇺 · S. Gori🇺🇸 · F. Maltoni🇧🇪 · M. McCullough🇨🇭 · P. Musella🇨🇭 · L. Perrozzi🇨🇭 · P. Richardson🇨🇭 · F. Riva🇨🇭 · A. Angelescu🇺🇸 · S. Banerjee🇬🇧 · D. Barducci🇮🇹 and 71 other authors

   We present the activities of the `New Physics' working group for the `Physics at TeV Colliders' workshop (Les Houches, France, 5--23 June, 2017). Our report includes new physics studies connected with the Higgs boson and its properties, direct search strategies, reinterpretation of the LHC results in the building of viable models and new computational tool developments.

   hep-ph66 citations
2. 02*

   Neutrino mixing from finite modular groups

   Tatsuo Kobayashi🇯🇵 · Kentaro Tanaka🇯🇵 · Takuya H. Tatsuishi🇯🇵

   We study the lepton flavor models, whose flavor symmetries are finite subgroups of the modular group such as $S_3$ and $A_4$. In our models, couplings are also nontrivial representations of these groups and modular functions of the modulus. We study the possibilities that these models realize realistic values of neutrino masses and lepton mixing angles.

   hep-phhep-thPRD(2018)·264 citations
3. 03*

   Schwinger-Dyson equation boundary conditions induced by ETC radiative corrections

   A. Doff🇧🇷 · A. A. Natale🇧🇷

   The technicolor (TC) Schwinger-Dyson equations (SDE) should include radiative corrections induced by extended technicolor (ETC) interactions when TC is embedded into a larger theory including also QCD. These radiative corrections couple the different strongly interacting Dyson equations. We discuss how the boundary conditions of the coupled SDE system are modified by these corrections, and verify that the ultraviolet behavior of the self-energies are described by a function that decreases logarithmically with momentum.

   hep-phhep-latEPJC(2018)·8 citations
4. 04*

   Z Polarization in $e^{+}{e}^{-}\to t\bar{t}Z$ for testing the top quark mass structure and the presence of final interactions

   Fernand M Renard🇫🇷

   We show that the measurement of the $Z$ polarization in the $e^{+}{e}^{-}\to t\bar{t}Z$ process would allow an interesting determination of the role of the top quark mass. This can be used for testing the possibility of top compositeness or of the occurence of final state interactions related to the mass generation in particular the interaction with dark matter.

   hep-ph11 citations
5. 05*

   Lepton flavor violation via four-Fermi contact interactions at the International Linear Collider

   Gi-Chol Cho🇯🇵 · Yuka Fukuda🇯🇵 · Takanori Kono🇯🇵

   Lepton flavor violating (LFV) process $e^{+}{e}^{-}\to e^{+}{\tau }^{-}$ induced by the four-Fermi contact interactions at the International Linear Collider (ILC) is studied. Taking account of the event selection conditions, it is shown that the ILC is sensitive to smaller LFV couplings as compared to the measurement of $\tau \to 3e$ process at the B-factory experiment. The upper bounds on some of the LFV couplings are improved by several factors using polarized $e^{-}/e^{+}$ beams at $\sqrt{s}=250\mathrm{GeV}$ and by an order of magnitude at $\sqrt{s}=1\mathrm{TeV}$.

   hep-phPLB(2019)·8 citations
6. 06*

   Anomalous Hall effect in dense QCD matter

   Toshitaka Tatsumi🇯🇵 · Ryo Yoshiike🇯🇵 · Kouji Kashiwa🇯🇵

   In this letter, we investigate the anomalous Hall effect in dense QCD matter. When the dual chiral density wave which is the spatially modulated chiral condensate appears in the medium, it gives rise to two Weyl points to the single-particle energy-spectrum and then the anomalous Hall conductivity becomes nonzero. Then, dense QCD matter is analogous to the Weyl semimetal. The direct calculation of the Hall conductivity by way of Kubo's linear response theory gives the term proportional to the distance between the Weyl points. Unlike the Weyl semimetal, there appears the additional contribution induced by axial anomaly.

   hep-phcond-mat.mes-hallhep-thPLB(2018)·9 citations
7. 07*

   Study of Isolated-photon and Jet Momentum Imbalance in $pp$ and $PbPb$ collisions

   Lin Chen🇨🇳 · Guang-You Qin🇨🇳 · Lei Wang🇨🇳 · Shu-Yi Wei🇨🇳 · Bo-Wen Xiao🇨🇳 · Han-Zhong Zhang🇨🇳 · Ya-Qi Zhang🇨🇳

   In this paper, we study the production of isolated-photon plus a jet in $pp$ and $PbPb$ collisions, which can be used as an important probe to the jet transport property in quark gluon plasma created in heavy ion collisions. Normally, there are two types of observables associated with the production of isolated-photon plus a jet, namely, the azimuthal angular correlation and the transverse momentum imbalance. To understand both observables in the full kinematical region, we need to employ the perturbative QCD calculation, which takes into account the hard splitting of partons, together with the Sudakov resummation formalism, which resums soft gluon splittings. Furthermore, by introducing energy-loss into the system, we calculate the enhancement of the momentum imbalance distribution for $AA$ as compared to $pp$ collisions and make predictions for future unfolded experimental data. In addition, in order to extract the jet transport coefficient more precisely in our numerical calculation, we also distinguish quark jets from gluon jets, since they interact with quark gluon plasma with different strengths. This work provides a reliable theoretical tool for the calculation of the gamma-jet correlation, which can lead us to a more precise extraction of the jet transport coefficient in relativistic heavy-ion collisions.

   hep-phnucl-exnucl-thNPB(2018)·34 citations
8. 08*

   Covariant interacting Hadron-Resonance Gas model

   Thorsten Steinert🇩🇪 · Wolfgang Cassing🇩🇪

   The Hadron-Resonance Gas (HRG) approach - used to model hadronic matter at small baryon potentials ${\mu }_B$ and finite temperature $T$ - is extended to finite and large chemical potentials by introducing interactions between baryons in line with relativistic mean-field theory defining an interacting HRG (IHRG). Using lattice data for ${\mu }_B=0$ as well as information on the nuclear equation of state at $T=0$ we constrain the attractive and repulsive interactions of the IHRG such that it reproduces the lattice equation of state at ${\mu }_B=0$ and the nuclear equation of state at $T=0$ and finite ${\mu }_B$. The formulated covariant approach is thermodynamically consistent and allows us to provide further information on the phase boundary between hadronic and partonic phases of strongly interacting matter by assuming constant thermodynamic potentials.

   hep-phnucl-thPRC(2018)·11 citations
9. 09*

   S-wave Heavy Quarkonium Spectra: Mass, Decays and Transitions

   Halil Mutuk🇹🇷

   In this paper we revisited phenomenological potentials. We studied S-wave heavy quarkonium spectra by two potential models. The first one is power potential and the second one is logarithmic potential. We calculated spin averaged masses, hyperfine splittings, decay constants, leptonic decay widhts, two-photon and two-gluon decay widths and some allowed M1 transitions. We studied ground and 4 radially excited S-wave charmonium and bottomonium states via solving nonrelativistic Schrödinger equation. Although the potentials were studied in this paper is not directly QCD motivated potential, obtained results are agree well with experimental data and other theoretical studies.

   hep-phAdv.High Energy Phys.(2018)·16 citations
10. 10*

    New possibilities of hybrid texture of neutrino mass matrix

    Madan Singh🇮🇳

    In this paper, we investigate the noval possibilities of hybrid textures comprising a vanishing minor (or element) and two equal elements (or cofactors) in light neutrino mass matrix $M_{\nu }$. Such type of texture structures lead to sixty phenomenological cases each, out of which only fifty six are viable with texture containing a vanishing minor and an equality between the elements in $M_{\nu }$, while fifty are found to be viable with texture containing a vanishing element and an equality of cofactors in $M_{\nu }$ under the current experimental test at 3$\sigma$ confidence level. Detailed numerical analysis of all the possible cases have been presented.

    hep-phAdv.High Energy Phys.(2018)·2 citations
11. 11*

    Updated global analysis of neutrino oscillations in the presence of eV-scale sterile neutrinos

    Mona Dentler🇩🇪 · Álvaro Hernández-Cabezudo🇩🇪 · Joachim Kopp🇩🇪 · Pedro A. N. Machado🇺🇸 · Michele Maltoni🇪🇸 · Ivan Martinez-Soler🇪🇸 · Thomas Schwetz🇩🇪

    We discuss the possibility to explain the anomalies in short-baseline neutrino oscillation experiments in terms of sterile neutrinos. We work in a 3+1 framework and pay special attention to recent new data from reactor experiments, IceCube and MINOS+. We find that results from the DANSS and NEOS reactor experiments support the sterile neutrino explanation of the reactor anomaly, based on an analysis that relies solely on the relative comparison of measured reactor spectra. Global data from the ${\nu }_e$ disappearance channel favour sterile neutrino oscillations at the $3\sigma$ level with $\Delta m_{41}^2\approx 1.3$ eV${}^2$ and $|U_{e4}|\approx 0.1$, even without any assumptions on predicted reactor fluxes. In contrast, the anomalies in the ${\nu }_e$ appearance channel (dominated by LSND) are in strong tension with improved bounds on ${\nu }_{\mu }$ disappearance, mostly driven by MINOS+ and IceCube. Under the sterile neutrino oscillation hypothesis, the p-value for those data sets being consistent is less than $2.6\times 10^{-6}$. Therefore, an explanation of the LSND anomaly in terms of sterile neutrino oscillations in the 3+1 scenario is excluded at the $4.7\sigma$ level. This result is robust with respect to variations in the analysis and used data, in particular it depends neither on the theoretically predicted reactor neutrino fluxes, nor on constraints from any single experiment. Irrespective of the anomalies, we provide updated constraints on the allowed mixing strengths $|U_{\alpha 4}|$ ($\alpha =e,\mu ,\tau$) of active neutrinos with a fourth neutrino mass state in the eV range.

    hep-phhep-exJHEP(2018)·461 citations
12. 12*

    Photon in the Earth-ionosphere cavity: Schumann resonances

    Yusuf Sucu🇹🇷 · Cavit Tekincay🇹🇷

    We study a quantum analogy of Schumann resonances by solving massless and massive spin-1 particle equations derived from the Zitterbewegung model in an annular cavity background with poorly conducting walls. We also show that the massless case and the massive case in the $m_0^2\to 0$ limit are compatible with Maxwell's electromagnetic theory. Furthermore, from the massive case, we predict an upper limit for the mass of the photon of 1.3x$10^{-50}$kg. The bound on the mass of the photon is compatible with the current limit in the literature.

    hep-phastro-ph.EPAstrophys.Space Sci.(2019)·7 citations
13. 13*

    The Texture One Zero Neutrino Mass Matrix With Vanishing Trace

    Madan Singh🇮🇳

    In the light of latest neutrino oscillation data, we have investigated the one zero Majorana neutrino mass matrix $M_{\nu }$ with zero sum condition of mass eigen values in the flavor basis, where charged lepton mass matrix is diagonal. Among the six possible one-zero cases, it is found that only five can survive the current experimental data, while case with (1, 1) vanishing element of $M_{\nu }$ is ruled out, if zero trace condition is imposed at 3$\sigma$ confidence level (CL). Numerical and some approximate analytical results are presented.

    hep-phAdv.High Energy Phys.(2018)·10 citations
14. 14*

    Investigating the hybrid textures of neutrino mass matrix for near maximal atmospheric neutrino mixing

    Madan Singh🇮🇳

    In the present paper, we have studied that the implication of a large value of the effective Majorana neutrino mass in case of neutrino mass matrices having either two equal elements and one zero element (popularly known as hybrid texture) or two equal cofactors and one zero minor (popularly known as inverse hybrid texture) in the flavor basis. In each of these cases, four out of sixty phenomenologically possible patterns predict near maximal atmospheric neutrino mixing angle in the limit of large effective Majorana neutrino mass. This feature remains irrespective of the experimental data on solar and reactor mixing angles. In addition, we have also performed the comparative study of all the viable cases of hybrid and inverse hybrid textures at 3$\sigma$ CL.

    hep-phcs.NAmath.NAAdv.High Energy Phys.(2018)·10 citations
15. 15*

    Primordial Anisotropies in the Gravitational Wave Background from Cosmological Phase Transitions

    Michael Geller🇺🇸 · Anson Hook🇺🇸 · Raman Sundrum🇺🇸 · Yuhsin Tsai🇺🇸

    Phase transitions in the early universe can readily create an observable stochastic gravitational wave background. We show that such a background necessarily contains anisotropies analogous to those of the cosmic microwave background (CMB) of photons, and that these too may be within reach of proposed gravitational wave detectors. Correlations within the gravitational wave anisotropies and their cross-correlations with the CMB can provide new insights into the mechanism underlying primordial fluctuations, such as multi-field inflation, as well as reveal the existence of non-standard ``hidden sectors" of particle physics in earlier eras.

    hep-phastro-ph.COPRL(2018)·128 citations
16. 16*

    Axion and hidden photon dark matter detection with multilayer optical haloscopes

    Masha Baryakhtar🇨🇦 · Junwu Huang🇨🇦 · Robert Lasenby🇨🇦

    A well-motivated class of dark matter candidates, including axions and dark photons, takes the form of coherent oscillations of a light bosonic field. If the dark matter couples to Standard Model states, it may be possible to detect it via absorptions in a laboratory target. Current experiments of this kind include cavity-based resonators that convert bosonic dark matter to electromagnetic fields, operating at microwave frequencies. We propose a new class of detectors at higher frequencies, from the infrared through the ultraviolet, based on the dielectric haloscope concept. In periodic photonic materials, bosonic dark matter can efficiently convert to detectable single photons. With feasible experimental techniques, these detectors can probe significant new parameter space for axion and dark photon dark matter in the 0.1-10 eV mass range.

    hep-phcond-mat.mes-hallphysics.ins-detphysics.opticsPRD(2018)·240 citations
17. 17*

    Elliptic symbol calculus: from elliptic polylogarithms to iterated integrals of Eisenstein series

    Johannes Broedel🇩🇪 · Claude Duhr🇨🇭 · Falko Dulat🇺🇸 · Brenda Penante🇨🇭 · Lorenzo Tancredi🇨🇭

    We present a generalization of the symbol calculus from ordinary multiple polylogarithms to their elliptic counterparts. Our formalism is based on a special case of a coaction on large classes of periods that is applied in particular to elliptic polylogarithms and iterated integrals of modular forms. We illustrate how to use our formalism to derive relations among elliptic polylogarithms, in complete analogy with the non-elliptic case. We then analyze the symbol alphabet of elliptic polylogarithms evaluated at rational points, and we observe that it is given by Eisenstein series for a certain congruence subgroup. We apply our formalism to hypergeometric functions that can be expressed in terms of elliptic polylogarithms and show that they can equally be written in terms of iterated integrals of Eisenstein series. Finally, we present the symbol of the equal-mass sunrise integral in two space-time dimensions. The symbol alphabet involves Eisenstein series of level six and weight three, and we can easily integrate the symbol in terms of iterated integrals of Eisenstein series.

    ↳ hep-thhep-phmath-phmath.MPJHEP(2018)·186 citations
18. 18*

    Quadratic chaotic inflation with a logarithmic-corrected mass

    Shinta Kasuya🇯🇵 · Mayuko Taira🇯🇵

    We consider a simple modification of quadratic chaotic inflation. We add a logarithmic correction to the mass term, and find that this model can be consistent with the latest cosmological observations such as the Planck 2018 data, in combination with the BICEP2/Keck Array and the baryon acoustic oscillation data. Since the model predicts the lower limit for the tensor-to-scalar ratio r for the present allowed values of the spectral index n_s, it could be tested by the cosmic microwave background polarization observation in the near future. In addition, we consider higher-order logarithmic corrections. Interestingly, we observe that the scalar spectral index n_s and r stay in rather a narrow region of the parameter space. Moreover, they reside in a completely different region from that for the logarithmic corrections to the quartic coupling. Therefore, future observations may distinguish which kind of corrections should be included, or even single out the form of the interactions.

    ↳ astro-ph.COhep-phPRD(2018)·2 citations
19. 19*

    Complementary Polynomials From Rodrigues' Representations For Confluent And Hypergeometric Functions And More

    H. J. Weber🇺🇸

    Complementary polynomials of Legendre polynomials are briefly presented, as well as those for the confluent and hypergeometric functions, relativistic Hermite polynomials and corresponding new pre-Laguerre polynomials. The generating functions are all given in closed form and are much simpler than the standard ones. Some are simply polynomials in two variables. New recursions and addition formulas are derived.

    ↳ math.APhep-phmath.CAnucl-th0 citations
20. 20*

    Biblioranking fundamental physics

    Alessandro Strumia🇮🇹 · Riccardo Torre🇨🇭

    We propose measures of the impact of research that improve on existing ones such as counting of number of papers, citations and $h$-index. Since different papers and different fields have largely different average number of co-authors and of references we replace citations with individual citations, shared among co-authors. Next, we improve on citation counting applying the PageRank algorithm to citations among papers. Being time-ordered, this reduces to a weighted counting of citation descendants that we call PaperRank. Similarly, we compute an AuthorRank applying the PageRank algorithm to citations among authors. These metrics quantify the impact of an author or paper taking into account the impact of those authors that cite it. Finally, we show how self- and circular- citations can be eliminated by defining a closed market of citation-coins. We apply these metrics to the InSpire database that covers fundamental physics, ranking papers, authors, journals, institutes, towns, countries, continents, genders, for all-time and in recent time periods.

    ↳ cs.DLastro-ph.COhep-phhep-th+1J.Informet.(2019)·4 citations
21. 21*

    Addendum to Strangeness Production and Color Deconfinement

    P. Castorina🇮🇹 · S. Plumari🇮🇹 · H. Satz🇩🇪

    Recent extensive data from the beam energy scan of the STAR collaboration at BNL-RHIC provide the basis for a detailed update for the universal behavior of the strangeness suppression factor gamma_s as function of the initial entropy density, as proposed in our recent paper [1]. [1] P. Castorina, S. Plumari and H. Satz, Int. J. Mod. Phys. E26 (2017) 1750081 (arXiv:1709.02706)

    ↳ nucl-thhep-phIJMPE(2017)·15 citations
22. 22*

    First Constraint on the Neutrino-Induced Phase Shift in the BAO Spectrum

    Daniel Baumann🇳🇱 · Florian Beutler🇬🇧 · Raphael Flauger🇺🇸 · Daniel Green🇺🇸 · Anže Slosar🇺🇸 · Mariana Vargas-Magaña🇲🇽 · Benjamin Wallisch🇬🇧 · Christophe Yèche🇺🇸

    The existence of the cosmic neutrino background is a fascinating prediction of the hot big bang model. These neutrinos were a dominant component of the energy density in the early universe and, therefore, played an important role in the evolution of cosmological perturbations. The energy density of the cosmic neutrino background has been measured using the abundances of light elements and the anisotropies of the cosmic microwave background (CMB). A complementary and more robust probe is a distinct shift in the temporal phase of sound waves in the primordial plasma which is produced by fluctuations in the neutrino density and has recently been detected in the CMB. In this paper, we report on the first constraint on this neutrino-induced phase shift in the spectrum of baryon acoustic oscillations (BAO) of the BOSS DR12 data. Constraining the acoustic scale using Planck data while marginalizing over the effects of neutrinos in the CMB, we find a non-zero phase shift at greater than 95\% confidence. We also demonstrate the robustness of this result in simulations and forecasts. Besides providing a new test of the cosmic neutrino background, our work is the first application of the BAO signal to early universe physics and a non-trivial confirmation of the standard cosmological history.

    ↳ astro-ph.COhep-phNat.Phys.(2019)·114 citations
23. 23*

    Holographic Heavy-Ion Collisions: Analytic Solutions with Longitudinal Flow, Elliptic Flow and Vorticity

    Hans Bantilan🇬🇧 · Takaaki Ishii🇳🇱 · Paul Romatschke🇺🇸

    We consider phenomenological consequences arising from simple analytic solutions for holographic heavy-ion collisions. For these solutions, early-time longitudinal flow is initially negative (inward), sizable direct, elliptic, and quadrangular flow is generated, and the average vorticity of the system is tunable by a single parameter. Despite large vorticity and angular momentum, we show that the system does not complete a single rotation.

    ↳ nucl-thhep-phhep-thPLB(2018)·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.