Results 81 to 90 of about 422,922 (221)

Classes of complete dark photon models constrained by Z-physics

Physics Letters B
Dark Matter models that employ a vector portal to a dark sector are usually treated as an effective theory that incorporates kinetic mixing of the photon with a new U(1) gauge boson, with the Z boson integrated out.
Miguel P. Bento, Howard E. Haber, João P. Silva   +2 more
doaj   +1 more source

A Large Magneto‐Optical Trap of Cadmium Atoms Loaded From a Cryogenic Buffer Gas Beam

Natural Sciences, EarlyView.
We demonstrate laser cooling and trapping of cadmium atoms using deep‐ultraviolet light at 229 nm, capturing more than 1×107$1\times10^{7}$ atoms within 10 ms from a compact 5 cm Zeeman slower and cryogenic beam source. We achieve peak densities of 2.5×1011cm−3$2.5\times10^{11} \,\text{cm}^{-3}$ and phase‐space densities of 2×10−9$2\times10^{-9}$.
J. E. Padilla‐Castillo, S. Hofsäss, L. Palánki, J. Cai, C. J. H. Rich, R. Thomas, S. Kray, G. Meijer, S. C. Wright, S. Truppe   +9 more
wiley   +1 more source

Coherence, Transport, and Chaos in 1D Bose–Hubbard Model: Disorder vs. Stark Potential

Fortschritte der Physik, EarlyView.
Quantum coherence and criticality in finite Bose–Hubbard chains are investigated using exact diagonalization. Thermal fluctuations, Stark potential, and disorder reshape coherence, visibility, and superfluid response. Finite‐size systems show signatures of quantum criticality, with disorder suppressing global superfluidity but preserving local ...
Asad Ali, M.I. Hussain, Saif Al‐Kuwari, M. T. Rahim, H. Kuniyil, Seyed Mohammad Hosseiny, Jamileh Seyed‐Yazdi, Hamid Arian Zad, Saeed Haddadi   +8 more
wiley   +1 more source

Transverse-Momentum Resummation for Gauge Boson Pair Production at the Hadron Collider [PDF]

, 2013
We perform the transverse-momentum resummation for $W^{+}W^{-}$, $ZZ$, and $W^{\pm}Z$ pair productions at the next-to-next-to-leading logarithmic accuracy using soft-collinear effective theory for $\sqrt{S}=8 \text{TeV}$ and $\sqrt{S}=14 \text{TeV}$ at ...
Yan Wang, Chong-Sheng Li, Z. Liu, D. Shao, Hai Tao Li   +4 more
semanticscholar   +1 more source

Gauge Boson Mixing in the 3-3-1 Models with Discrete Symmetries

Advances in High Energy Physics, 2012
The mixing among gauge bosons in the 3-3-1 models with the discrete symmetries is investigated. To get tribimaximal neutrino mixing, we have to introduce sextets containing neutral scalar components with lepton number L=1,2.
P. V. Dong, V. T. N. Huyen, H. N. Long, H. V. Thuy   +3 more
doaj   +1 more source

Helicity amplitudes without gauge cancellation for electroweak processes

European Physical Journal C: Particles and Fields, 2023
In the 5-component representation of weak bosons, the first four components make a Lorentz four vector, representing the transverse and longitudinal polarizations excluding the scalar component of the weak bosons, whereas its fifth component corresponds ...
Junmou Chen, Kaoru Hagiwara, Junichi Kanzaki, Kentarou Mawatari   +3 more
doaj   +1 more source

Ambient Condition Superconductivity via Engineered Polaronic Environment

physica status solidi (RRL) – Rapid Research Letters, EarlyView.
A novel strategy for increasing the critical temperature Tc of superconductors is proposed. It involves mating ultrathin layers of superconductors (e.g. MgB2) and metal‐organic framework materials, with a renormalized dielectric response yielding a new system with strengthened Cooper pairing via resonant antishielding. This study's estimates of Tc show
Krzysztof Kempa, Michael J. Naughton
wiley   +1 more source

Electroweak gauge boson polarisation at the LHC [PDF]

, 2012
A bstractWe study the polarisation of gauge bosons produced at the LHC. Polarisation effects for W bosons manifest themselves in the angular distributions of the lepton and in the distributions of lepton transverse momentum and missing transverse energy.
W. Stirling, E. Vryonidou
semanticscholar   +1 more source

CP violation in loop-induced diboson production

Journal of High Energy Physics
We consider the impact of CP-violating Higgs and top interactions on diboson production from gluon fusion within the Standard Model Effective Field Theory framework.
Marion O. A. Thomas, Eleni Vryonidou
doaj   +1 more source

Scrutinizing a hidden SM-like gauge model with corrections to oblique parameters

European Physical Journal C: Particles and Fields, 2023
In view of the recent high precision measurement of the Standard Model W boson mass at the CDF II detector, we compute the contributions to the oblique parameters S, T and U coming from the two additional Higgs doublets (one inert and one hidden) as well
Van Que Tran, Thong T. Q. Nguyen, Tzu-Chiang Yuan   +2 more
doaj   +1 more source