High Energy Physics  Phenomenology
New submissions
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New submissions for Thu, 22 Feb 18
 [1] arXiv:1802.07269 [pdf, other]

Title: Latetime magnetogenesis driven by ALP dark matter and dark photonComments: 6 pages, 2 figuresSubjects: High Energy Physics  Phenomenology (hepph); Cosmology and Nongalactic Astrophysics (astroph.CO)
We propose a mechanism which generates primordial magnetic fields after the $e^+e^$ annihilations. Our mechanism involves an ultralight axionlike particle (ALP) which constitutes the dark matter, and a dark $U(1)_X$ gauge boson introduced to bypass the obstacle placed by the conductivity of cosmic plasma. In our scheme, coherently oscillating ALP amplifies the dark photon field, and part of the amplified dark photon field is concurrently converted to the ordinary magnetic field through the ALPinduced magnetic mixing. For the relevant ALP mass range $10^{21} {\rm eV}\lesssim m_\phi\lesssim 10^{17}{\rm eV}$, our mechanism can generate $B\sim 10^{24} \,(m_\phi/10^{17} {\rm eV})^{5/4}\,{\rm G}$ with a coherent length $\lambda \sim (m_\phi/10^{17} {\rm eV})^{1/2}$ kpc, which is large enough to provide a seed of the galactic magnetic fields. The mechanism also predicts a dark $U(1)_X$ electromagnetic field $E_X \sim B_X\sim 10\,(m_\phi/10^{17}{\rm eV})^{1/4}{\rm nG}$, which can result in interesting astrophysical/cosmological phenomena by inducing the mixings between the ALP, ordinary photon, and dark photon states.
 [2] arXiv:1802.07273 [pdf, other]

Title: Axion interferometryComments: 5 pages, 5 figuresSubjects: High Energy Physics  Phenomenology (hepph)
We propose using interferometry of circularly polarized light as a mechanism by which to test for axion dark matter. These interferometers differ from standard interferometers only by the addition of a few quarter waveplates to preserve the polarization of light upon reflection. We show that using current technology, interferometers can probe new regions of axion parameter space up to a couple orders of magnitude beyond current constraints.
 [3] arXiv:1802.07339 [pdf, ps, other]

Title: Exclusive and diffractive $μ^+ μ^$ production in $pp$ collisions at the LHCComments: 9 pages, 6 figures, 3 tables. arXiv admin note: text overlap with arXiv:1705.08834Subjects: High Energy Physics  Phenomenology (hepph); High Energy Physics  Experiment (hepex)
In this paper we estimate the production of dimuons ($\mu^+ \mu^$) in exclusive photon  photon ($\gamma \gamma$) and diffractive Pomeron  Pomeron $(I\!P I\!P)$, Pomeron  Reggeon $(I\!P I\!R)$ and Reggeon  Reggeon $(I\!R I\!R)$ interactions in $pp$ collisions at the LHC energy. The invariant mass, rapidity and tranverse momentum distributions are calculated using the Forward Physics Monte Carlo (FPMC), which allows to obtain realistic predictions for the dimuon production with two leading intact hadrons. In particular, predictions taking into account the CMS and LHCb acceptances are presented. Moreover, the contribution of the single diffraction for the dimuon production also is estimated. Our results demonstrate that the experimental separation of these different mechanisms is feasible. In particular, the events characterized by pairs with large squared transverse momentum are dominated by diffractive interactions, which allows to investigate the underlying assumptions present in the description of these processes.
 [4] arXiv:1802.07365 [pdf, ps, other]

Title: Lorentzviolating contributions to the nuclear Schiff moment and nuclear EDMComments: 8 pages, revtex style, to appear in Phys. Rev. DSubjects: High Energy Physics  Phenomenology (hepph)
In the context of an atom endowed with nuclear EDM, we consider the effects on the Schiff moment of $CPT$even Lorentzviolating (LV) terms that modify the Coulomb potential. First, we study the modifications on the Schiff moment when the nucleus interacts with the electronic cloud by means of a Coulomb potential altered only by the $P$even LV components. Next, by supposing the existence of an additional intrinsic LV EDM generated by other LV sources, we assess the corrections to the Schiff moment when the interaction nucleuselectrons runs mediated by a Coulomb potential modified by both the $P$odd and $P$even LV components. We then use known estimates and EDM measurements to discuss upper bounds on the new Schiff moment components and the possibility of a nuclear EDM component ascribed to LV effects.
 [5] arXiv:1802.07478 [pdf, other]

Title: Neutrino astrophysics and its connections to nuclear physicsAuthors: Maria Cristina VolpeComments: 7 pages, 1 figure, Proceedings of the "Conference on Neutrino and Nuclear Physics (CNNP2017), 1521 October, CataniaSubjects: High Energy Physics  Phenomenology (hepph); Nuclear Experiment (nuclex); Nuclear Theory (nuclth)
We highlight recent developments in neutrino astrophysics. We discuss some of the connections with nuclear physics.
 [6] arXiv:1802.07498 [pdf, other]

Title: ALP production through nonlinear Compton scattering in intense fieldsComments: 23 pages, 14 figuresSubjects: High Energy Physics  Phenomenology (hepph)
We derive production yields for massive pseudoscalar and scalar axionlikeparticles (ALPs), through nonlinear Compton scattering of an electron in the background of low and highintensity electromagnetic fields. In particular, we focus on electromagnetic fields from Gaussian plane wave laser pulses. A detailed study of the angular distributions and effects of the scalar and pseudoscalar masses is presented. It is shown that ultrarelativistic seed electrons can be used to produce scalars and pseudoscalars with masses up to the order of the electron mass. We briefly discuss future applications of this work towards labbased searches for light beyondtheStandardModel particles.
 [7] arXiv:1802.07507 [pdf, ps, other]

Title: Electronseeded ALP production and ALP decay in an oscillating electromagnetic fieldAuthors: B. KingComments: 7 pages, 4 figuresSubjects: High Energy Physics  Phenomenology (hepph); Optics (physics.optics); Plasma Physics (physics.plasmph)
Certain models involving ALPs (axionlikeparticles) allow for the coupling of scalars and pseudoscalars to fermions. A derivation of the total rate for production of massive scalars and pseudoscalars by an electron in a monochromatic, circularlypolarised electromagnetic background is presented. In addition, a derivation and the total rate for the decay of massive scalars and pseudoscalars into electronpositron pairs in the same electromagnetic background is given. We conclude by approximating the total yield of ALP production for a typical laserparticle experimental scenario.
 [8] arXiv:1802.07616 [pdf, other]

Title: Constraining the Higgs self couplings at $e^+e^$ collidersComments: 44 pages, 24 figuresSubjects: High Energy Physics  Phenomenology (hepph)
We study the sensitivity to the shape of the Higgs potential of single, double, and triple Higgs production at future $e^+e^$ colliders. Physics beyond the Standard Model is parameterised through the inclusion of higherdimensional operators $(\Phi^\dagger \Phi v^2/2)^n/\Lambda^{(2n4)}$ with $n=3,4$, which allows a consistent treatment of independent deviations of the cubic and quartic self couplings beyond the tree level. We calculate the effects induced by a modified potential up to one loop in single and double Higgs production and at the tree level in triple Higgs production, for both $Z$ boson associated and $W$ boson fusion production mechanisms. We consider two different scenarios. First, the dimension six operator provides the dominant contribution (as expected, for instance, in a linear EFT); we find in this case that the corresponding Wilson coefficient can be determined at $\mathcal{O}(10\%)$ accuracy by just combining accurate measurements of single Higgs cross sections at $\sqrt{\hat s}=$240250 GeV and double Higgs production in $W$ boson fusion at higher energies. Second, both operators of dimension six and eight can give effects of similar order, i.e., independent quartic self coupling deviations are present. Constraints on Wilson coefficients can be best tested by combining measurements from single, double and triple Higgs production. Given that the sensitivity of single Higgs production to the dimension eight operator is presently unknown, we consider double and triple Higgs production and show that combining their information colliders at higher energies will provide first coarse constraints on the corresponding Wilson coefficient.
 [9] arXiv:1802.07620 [pdf, other]

Title: Angular and polarization trails from effective interactions of Majorana neutrinos at the LHeCComments: 22 pages, 13 figuresSubjects: High Energy Physics  Phenomenology (hepph)
We study the possibility of the LHeC facility to disentangle different new physics contributions to the production of heavy sterile Majorana neutrinos in the lepton number violating channel $e^{}p\rightarrow l_{j}^{+} + 3 jets$ ($l_j\equiv e ,\mu $). This is done investigating the angular and polarization trails of effective operators with distinct DiracLorentz structure contributing to the Majorana neutrino production, which parameterize new physics from a higher energy scale. We study an asymmetry in the angular distribution of the final antilepton and the initial electron polarization effect on the number of signal events produced by the vectorial and scalar effective interactions, finding both analyses could well separate their contributions.
 [10] arXiv:1802.07688 [pdf, ps, other]

Title: Generalized Wandzura Wilczek Relations and Orbital Angular MomentumComments: 5 pages, talk presented at QCD Evolution 2017, 2216 May 2017, Jefferson Lab, Newport News, VAUSASubjects: High Energy Physics  Phenomenology (hepph)
New Lorentz Invariance Relations (LIRs) were presented between twistthree Generalized Parton Distributions (GPDs) and transverse momentum, $k_T$, moments of twisttwo Generalized Transverse MomentumDependent Distributions (GTMDs). By implementing both these LIRs and the QCD Equations of Motion in the quark quark correlation function, we generated a new series of Wandzura Wilczek (WW) relations in the offforward sector. Two of these WW relations take on a particularly interesting physical meaning in that they provide a clear interpretation of the QCD structure of Orbital Angular Momentum (OAM) in the nucleon. In particular, they provide a solution to the outstanding puzzle of how OAM could be simultaneously described by twisttwo GTMDs and twistthree GPDs. Additional relations were discussed, in particular, for the helicity configurations that can be detected analyzing specific spin asymmetries: one corresponding to a longitudinally polarized quark in an unpolarized proton, associated with spinorbit correlations, and one for transverse proton polarization, as a generalization of the relation obeyed by the $g_2$ structure function; finally, we defined a relation connecting the offforward extension of the Sivers function to an offforward QiuSterman term.
 [11] arXiv:1802.07690 [pdf, other]

Title: Strong thermal $SO(10)$inspired leptogenesis in the light of recent results from longbaseline neutrino experimentsComments: 20 pages, 5 figures. arXiv admin note: text overlap with arXiv:1705.01935Subjects: High Energy Physics  Phenomenology (hepph)
We confront recent experimental results on neutrino mixing parameters with the requirements from strong thermal $SO(10)$inspired leptogenesis, where the asymmetry is produced from nexttolightest righthanded neutrinos $N_2$ and is independent of initial conditions. There is a nice agreement with latest global analyses supporting $\sin\delta < 0$ and normal ordering at $ \sim 95\%$ C.L. On the other hand, the more stringent experimental lower bound on the atmospheric mixing angle starts to corner strong thermal $SO(10)$inspired leptogenesis. Prompted and encouraged by this rapid experimental advance, we obtain a precise determination of the allowed region in the plane $\delta$ versus $\theta_{23}$. We confirm that for the benchmark case $\alpha_2 \equiv m_{D2} / m_{\rm charm}= 5 \, $, where $m_{D2}$ is the intermediate neutrino Dirac mass setting the mass of $N_2$, and initial preexisting $BL$ asymmetry $N_{BL}^{\rm p, i} = 10^{3}$, the bulk of the solutions lies in the first octant. Though most of the solutions are found outside the $95\%$ C.L. experimental region, there is still a big allowed fraction that does not require a too finetuned choice of the Majorana phases so that the neutrinoless double beta decay effective neutrino mass allowed range is still $m_{ee}\simeq [10,30]\,{\rm meV}$. We also show how the constraints depend on $N_{BL}^{\rm p, i}$ and $\alpha_2$. In particular, the current best fit, ($\theta_{23},\delta)\simeq (47^{\circ}, 130^{\circ})$, can be reproduced for $\alpha_2 =6$, a value obtained recently in a few realistic fits. Finally, we also obtain that current neutrino data rule out values $N_{BL}^{\rm p, i} \gtrsim 0.1$ for $\alpha_2 \lesssim 5$.
 [12] arXiv:1802.07711 [pdf, ps, other]

Title: The electromagnetic multipole moments of the charged openflavor $Z_{\bar cq}$ statesComments: 11 pages, 2 figures and 2 tablesSubjects: High Energy Physics  Phenomenology (hepph); High Energy Physics  Experiment (hepex); High Energy Physics  Lattice (heplat)
The electromagnetic multipole moments of the openflavor $Z_{\bar cq}$ states are investigated by assuming a diquarkantidiquark picture for their internal structure and quantum numbers $J^{PC} = 1^{+}$ for their spinparity. In particular, their magnetic and quadrupole moments are extracted in the framework of lightcone QCD sum rule by the help of the photon distribution amplitudes. The electromagnetic multipole moments of the openflavor $Z_{\bar cq}$ states are important dynamical observables, which encode valuable information on their underlying structure. The results obtained for the magnetic moments of different structures are considerably large and can be measured in future experiments. We obtain very small values for the quadrupole moments of $Z_{\bar cq}$ states indicating a nonspherical charge distribution.
 [13] arXiv:1802.07720 [pdf, other]

Title: Dark quarkonium formation in the early universeComments: 28 pages, 11 figuresSubjects: High Energy Physics  Phenomenology (hepph)
The relic abundance of heavy stable particles charged under a confining gauge group can be depleted by a second stage of annihilations near the deconfinement temperature. This proceeds via the formation of quarkonialike states, in which the heavy pair subsequently annihilates. The size of the quarkonium formation cross section was the subject of some debate. We estimate this cross section in a simple toy model. The dominant process can be viewed as a rearrangement of the heavy and light quarks, leading to a geometric cross section of hadronic size. In contrast, processes in which only the heavy constituents are involved lead to masssuppressed cross sections. These results apply to any scenario with bound states of sizes much larger than their inverse mass, such as U(1) models with charged particles of different masses, and can be used to construct ultraheavy darkmatter models with masses above the na\"ive unitarity bound. They are also relevant for the cosmology of any stable colored relic.
Crosslists for Thu, 22 Feb 18
 [14] arXiv:1802.06733 (crosslist from grqc) [pdf, other]

Title: Gravitational Wave Emission from Collisions of Compact Scalar SolitonsComments: 8 Pages, 8 figures, movies : this https URLSubjects: General Relativity and Quantum Cosmology (grqc); Cosmology and Nongalactic Astrophysics (astroph.CO); High Energy Physics  Phenomenology (hepph); High Energy Physics  Theory (hepth)
We numerically investigate the gravitational waves generated by the headon collision of equalmass, selfgravitating, real scalar field solitons (oscillatons) as a function of their compactness $\mathcal{C}$. We show that there exist three different possible outcomes for such collisions: (1) an excited stable oscillaton for low $\mathcal{C}$, (2) a merger and formation of a blackhole for intermediate $\mathcal{C}$, and (3) a premerger collapse of both oscillatons into individual blackholes for large $\mathcal{C}$. For (1), the excited, aspherical oscillaton continues to emit gravitational waves. For (2), the total energy in gravitational waves emitted increases with compactness, and possesses a maximum which is greater than that from the merger of a pair of equivalent mass blackholes. The initial amplitudes of the quasinormal modes in the postmerger ringdown in this case are larger than that of corresponding mass blackholes  potentially a key observable to distinguish blackhole mergers with their scalar mimics. For (3), the gravitational wave output is indistinguishable from a similar mass, blackholeblackhole merger.
 [15] arXiv:1802.07675 (crosslist from hepth) [pdf, ps, other]

Title: Exact Correlators from Conformal Ward Identities in Momentum Space and the Perturbative $TJJ$ VertexComments: 59 pages, 1 FigureSubjects: High Energy Physics  Theory (hepth); High Energy Physics  Phenomenology (hepph)
We present a general study of 3point functions of conformal field theory in momentum space, following a reconstruction method for tensor correlators, based on the solution of the conformal Ward identities (CWI' s), introduced in recent works by Bzowski, McFadden and Skenderis (BMS). We investigate and detail the structure of the CWI's and their nonperturbative solutions, and compare them to perturbation theory, taking QED as an example. In a first part we address in full generality some methodological issues emerging when reexpressing the conformal generators in momentum space from position space, filling a gap in the related literature. Such are the violation of the Leibniz rule and the treatment of the derivative of the Dirac $\delta$ terms related to conservation of the total momentum, induced by the Fourier transform. We present a complete discussion of this transition. We then proceed with an analysis of the $TJJ$ correlator, presenting independent and detailed rederivations of the conformal equations in the reconstruction method of BMS, originally formulated using a minimal tensor basis in the transverse traceless sector. Our results are then exemplified in massless QED at oneloop in $d$dimensions expressed in terms of master integrals. The action of the conformal generators on the $TJJ$ in $d$dimensions is directly worked out on the corresponding master integrals. We show how the conformal constraints are explicitly imposed and solved in such perturbative realization of the conformal equations in their exact $d$dimensional form and in their anomalous forms in $d=4$ after renormalization.
Replacements for Thu, 22 Feb 18
 [16] arXiv:1506.02660 (replaced) [pdf, other]

Title: Fully differential VBF Higgs production at NNLOComments: 5 pages, 2 figures, Version 2: Inclusion of bugfix of NLO H+3jet virtual correctionsJournalref: Phys. Rev. Lett. 115, 082002 (2015)Subjects: High Energy Physics  Phenomenology (hepph); High Energy Physics  Experiment (hepex)
 [17] arXiv:1703.00343 (replaced) [pdf, other]

Title: Light Neutralino Dark Matter in the NMSSMComments: 13 pp, plots and refs added; Modified conclusion based on wider parameter rangesSubjects: High Energy Physics  Phenomenology (hepph); High Energy Physics  Experiment (hepex)
 [18] arXiv:1706.02502 (replaced) [pdf, other]

Title: Colorphilic Spin2 Resonances in the LHC Dijet ChannelComments: 23 pages, 4 figures, updated notation and figuresSubjects: High Energy Physics  Phenomenology (hepph); High Energy Physics  Experiment (hepex)
 [19] arXiv:1706.05007 (replaced) [pdf, other]

Title: On the robustness of the primordial power spectrum in renormalized Higgs inflationComments: 12 pages, 8 figures  matches the published versionJournalref: JCAP02(2018)040Subjects: High Energy Physics  Phenomenology (hepph); Cosmology and Nongalactic Astrophysics (astroph.CO); High Energy Physics  Theory (hepth)
 [20] arXiv:1706.09735 (replaced) [pdf, other]

Title: Loop inflectionpoint inflationComments: 4 pages, 1 figure. Additional graph and sectioningSubjects: High Energy Physics  Phenomenology (hepph)
 [21] arXiv:1709.05128 (replaced) [pdf, ps, other]

Title: Dark matter scenarios with multiple spin2 fieldsComments: 30 pages, 4 figures; comments of referee implemented, matches published versionSubjects: High Energy Physics  Theory (hepth); Cosmology and Nongalactic Astrophysics (astroph.CO); General Relativity and Quantum Cosmology (grqc); High Energy Physics  Phenomenology (hepph)
 [22] arXiv:1709.05962 (replaced) [pdf, ps, other]

Title: Electromagnetic fields in small systems from a multiphase transport modelComments: 7 pages, 10 figures; final published versionJournalref: Phys. Rev. C 97, 024910 (2018)Subjects: High Energy Physics  Phenomenology (hepph); Nuclear Experiment (nuclex); Nuclear Theory (nuclth)
 [23] arXiv:1710.04360 (replaced) [pdf, other]

Title: Status of Sterile Neutrino fits with Global DataAuthors: Alejandro DiazComments: Talk presented at the APS Division of Particles and Fields Meeting (DPF 2017), July 31August 4, 2017, Fermilab. C170731Subjects: High Energy Physics  Experiment (hepex); High Energy Physics  Phenomenology (hepph)
 [24] arXiv:1711.03319 (replaced) [pdf, other]

Title: Parton Shower and NLOMatching uncertainties in Higgs Boson Pair ProductionSubjects: High Energy Physics  Phenomenology (hepph)
 [25] arXiv:1711.04344 (replaced) [pdf, other]

Title: Trident pair production in plane waves: Coherence, exchange, and spacetime inhomogeneityComments: Version 2: To appear in PRD, misprints corrected, minor changes to improve presentation, slight change of the title. 27 pages, 15 figuresSubjects: High Energy Physics  Phenomenology (hepph); High Energy Physics  Theory (hepth)
 [26] arXiv:1711.11376 (replaced) [pdf, other]

Title: Modelindependent analysis of the DAMPE excessComments: 28 pages, 5 figures and 2 tables. v2: references added. v3: minor changes, matches published versionJournalref: JHEP02(2018)121Subjects: High Energy Physics  Phenomenology (hepph); High Energy Astrophysical Phenomena (astroph.HE)
 [27] arXiv:1712.03527 (replaced) [pdf, other]

Title: Mass scale of vectorlike matter and superpartners from IR fixed point predictions of gauge and top Yukawa couplingsComments: 31 pages, 9 figures, typos corrected, matches the published versionSubjects: High Energy Physics  Phenomenology (hepph)
 [28] arXiv:1712.04956 (replaced) [pdf, other]

Title: HiggsDilaton Cosmology: An inflation  dark energy connection and forecasts for future galaxy surveysComments: 17 pages, 7 figures, added forecasts for DESI  matches the published versionJournalref: Phys. Rev. D 97, 043520 (2018)Subjects: Cosmology and Nongalactic Astrophysics (astroph.CO); General Relativity and Quantum Cosmology (grqc); High Energy Physics  Phenomenology (hepph)
 [29] arXiv:1801.04604 (replaced) [pdf]

Title: Dynamical Symmetry Breaking by SU(2) Gauge BosonsAuthors: F. J. HimpselComments: 17 pages, 2 figures. Versions 2,3: added Ref. [15], augmented Appendix B, clarified the textSubjects: High Energy Physics  Phenomenology (hepph)
 [30] arXiv:1801.09722 (replaced) [pdf, other]

Title: Status of Flavour Maximal Nonminimal Universal Extra DimensionComments: 22 pages, 6 figures, 4 tables; added discussion on $R_{K*}$; added referencesSubjects: High Energy Physics  Phenomenology (hepph)
 [31] arXiv:1802.04998 (replaced) [pdf, ps, other]

Title: Interacting hadron resonance gas model in Kmatrix formalismComments: With updated referencesSubjects: Nuclear Theory (nuclth); High Energy Physics  Phenomenology (hepph)
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