Results 71 to 80 of about 96,912 (161)

Implications of hidden gauged $U(1)$ model for $B$ anomalies

, 2017
We propose a hidden gauged $U(1)_H$ $Z'$ model to explain deviations from the Standard Model (SM) values in lepton flavor universality known as $R_K$ and $R_D$ anomalies.
Fuyuto, Kaori, Li, Hao-Lin, Yu, Jiang-Hao   +2 more
core   +1 more source

Topological Photonic Devices and Circuits at Terahertz Frequencies

Laser &Photonics Reviews, Volume 20, Issue 7, 6 April 2026.
This review examines how 3D topological insulators and emerging topological photonic phases enable robust, low‐loss and defect‐immune terahertz devices. Fundamental properties, device implementations and topological transport mechanisms are surveyed, revealing new opportunities for reconfigurable, high‐performance THz components and scalable ...
Samane Kalhor, Srabani Kar, Ranjan Singh, Kaveh Delfanazari   +3 more
wiley   +1 more source

New physics in single resonant top quarks

Journal of High Energy Physics
Searches for new physics in the top quark sector are of great theoretical interest, yet some powerful avenues for discovery remain unexplored. We characterize the expected statistical power of the LHC dataset to constrain the single production of heavy ...
Shelley Tong, James Corcoran, Max Fieg, Michael Fenton, Daniel Whiteson   +4 more
doaj   +1 more source

Higgs Boson Decays to Dark Photons through the Vectorized Lepton Portal

, 2017
Vector-like fermions charged under both the Standard Model and a new dark gauge group arise in many theories of new physics. If these fermions include an electroweak doublet and singlet with equal dark charges, they can potentially connect to the Higgs ...
Lu, Qianshu, Morrissey, David E., Wijangco, Alexander M.   +2 more
core   +1 more source

Resonant Dyakonov–Shur Magnetoplasmons in Graphene Terahertz Photodetectors

Nanophotonics, Volume 15, Issue 8, 24 April 2026.
Cavity‐confined Dyakonov–Shur plasmons in graphene evolve into magnetoplasmons by an external perpendicular magnetic field. Gate‐tunable THz photocurrent spectroscopy reveals their dispersion over a broad frequency range, uncovering a nonmonotonic behavior in monolayer graphene in contrast to the conventional response of bilayer graphene.
Juan A. Delgado‐Notario, Cedric Bray, Elsa Pérez‐Martín, Benjamin Benhamou‐Bui, Namrata Saha, Sahil Parvez, Christophe Consejo, Guillaume Sigu, Salah Benlemqwanssa, Laurent Bonnet, Takashi Taniguchi, Kenji Watanabe, José M. Caridad, Sergey S. Krishtopenko, Yahya M. Meziani, Benoit Jouault, Jérémie Torres, Sandra Ruffenach, Frédéric Teppe   +18 more
wiley   +1 more source

Two-Point Functions and S-Parameter in QCD-like Theories

, 2011
We calculated the vector, axial-vector, scalar and pseudo-scalar two-point functions up to two-loop level in the low-energy effective field theory for three different QCD-like theories. In addition we also calculated the pseudo-scalar decay constant $G_M$
AV Smilga, CG Callan Jr, E Golowich, E Golowich, G Altarelli, G Amoros, H Leutwyler, J Andersen, J Bijnens, J Bijnens, J Bijnens, J Bijnens, J Bijnens, J Gasser, J Gasser, J Gasser, J Gasser, J Kogut, J Preskill, Jie Lu, Johan Bijnens, K Splittorff, M Gonzalez-Alonso, ME Peskin, ME Peskin, S Dimopoulos, S Weinberg, SR Coleman, Y Kogan   +28 more
core   +1 more source

Hitchhiker's Guide to the Swampland: The Cosmologist's Handbook to the String‐Theoretical Swampland Programme

Fortschritte der Physik, Volume 74, Issue 4, April 2026.
Abstract String theory has strong implications for cosmology, implying the absence of a cosmological constant, ruling out single‐field slow‐roll inflation, and that black holes decay. The origins of these statements are elucidated within the string‐theoretical swampland programme.
Kay Lehnert
wiley   +1 more source

Multi-top signals of vectorlike quarks at the LHC

Journal of High Energy Physics
We point out that events with 6 or more top quarks may be observed at the LHC if certain particles exist at the TeV scale. In a model where a vectorlike quark of charge 2/3 decays into a top quark and a pseudoscalar particle, which subsequently decays ...
Elias Bernreuther, Bogdan A. Dobrescu
doaj   +1 more source

Uncovering Exotic Topological Quantum States in Pure and Magnetically‐Doped Pyrite OsS2

Advanced Quantum Technologies, Volume 9, Issue 4, April 2026.
Pyrite‐structured OsS2 is identified as a fragile topological insulator with an unprecedented 602 meV bandgap, featuring helical surface states and van Hove singularities amenable to ARPES verification. Magnetic doping with Pd, Fe, Ni, or Co induces phase transitions to strong topological insulators, semimetals, 3D quantum anomalous Hall insulators ...
Ali Sufyan, Hasan M. Abdullah, Gustav Johansson, Alexander C. Tyner, Hafiz Adil Qayyum, Ghulam Abbas Gilani, Rovi Angelo B. Villaos, Zhi‐Quan Huang, Feng‐Chuan Chuang, J. Andreas Larsson   +9 more
wiley   +1 more source

Vector-like tops from first generation quarks: the role of width and coupling chiralities in same-charge production at the LHC

Journal of High Energy Physics
In this paper, we tension the scope of the q q ¯ $$ q\overline{q} $$ , gg → T T ¯ $$ T\overline{T} $$ production process against that of the same-charge uu → TT one in searching for Vector-Like Quarks (VLQs) with electromagnetic charge +2/3 at the Large ...
Stefano Moretti, Luca Panizzi, Liangliang Shang   +2 more
doaj   +1 more source