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We demonstrate that an $SU(2)_L\times U(1)_Y$ model with the same particle content as Standard Model(SM) and discrete reflection symmetry between second and third generation of leptons give rise to charged lepton and neutrino mass matrices…

High Energy Physics - Phenomenology · Physics 2007-05-23 Ambar Ghosal

Studies on electron antineutrino-electron elastic scattering were performed using a 200-kg CsI(Tl) scintillating crystal detector array at the Kuo-Sheng Nuclear Power Plant in Taiwan. The measured cross section of R(exp) = [1.00 +-…

High Energy Physics - Experiment · Physics 2019-08-13 M. Deniz , H. T. Wong

We report measurements of the spin susceptibility and the electron effective mass for two-dimensional electrons confined at the interfaces of MgxZn1-xO/ZnO single heterostructures (x = 0.05, 0.08, and 0.11), grown by molecular-beam epitaxy…

The CHOOZ experiment measured the antineutrino flux at a distance of about 1 Km from two nuclear reactors in order to detect possible neutrino oscillations with squared mass differences as low as 10**-3 eV**2 for full mixing. We show that…

The ANITA experiment has registered two anomalous events that can be interpreted as $\nu_\tau$ or $\bar{\nu}_\tau$ with a very high energy of $\mathcal{O}(0.6)$~EeV emerging from deep inside the Earth. At such high energies, the Earth is…

High Energy Physics - Phenomenology · Physics 2019-12-10 Arman Esmaili , Yasaman Farzan

An effective theory based on ensembles of either regular gauge instantons or merons is shown to produce confinement in SU(2) Yang-Mills theory. When the scale is set by the string tension, the action density, topological susceptibility and…

High Energy Physics - Phenomenology · Physics 2008-11-26 F. Lenz , J. W. Negele , M. Thies

In a numerical Monte Carlo simulation of SU(2) Yang-Mills theory with dynamical gauginos we find evidence for two degenerate ground states at the supersymmetry point corresponding to zero gaugino mass. This is consistent with the expected…

High Energy Physics - Lattice · Physics 2007-05-23 R. Kirchner , S. Luckmann , I. Montvay , K. Spanderen , J. Westphalen

We have previously found analytically a very unusual and unexpected form of confinement in SU(3) Yang-Mills theory. This confinement occurs in the deconfined phase of the theory. The free energy of a single static test quark diverges, even…

High Energy Physics - Lattice · Physics 2009-10-31 K. Holland

We analyze the capacity of future $Z$-factories to search for heavy neutrinos with their mass from 10 to 85 GeV. The heavy neutrinos $N$ are considered to be produced via the process $e^+e^-\to Z\to \nu N$ and to decay into an electron or…

High Energy Physics - Phenomenology · Physics 2019-09-20 Jian-Nan Ding , Qin Qin , Fu-Sheng Yu

Jinping Neutrino Experiment (Jinping) is proposed to significantly improve measurements on solar neutrinos and geoneutrinos in China Jinping Laboratory - a lab with a number of unparalleled features, thickest overburden, lowest reactor…

We study the constraints imposed by perturbative unitarity on the new physics interpretation of the muon $g-2$ anomaly. Within a Standard Model Effective Field Theory (SMEFT) approach, we find that scattering amplitudes sourced by effective…

High Energy Physics - Phenomenology · Physics 2021-09-29 Lukas Allwicher , Luca Di Luzio , Marco Fedele , Federico Mescia , Marco Nardecchia

In this Letter we investigate the possible emission of low-energy electron neutrinos and electron-positron pairs of anomalously large multiplicity in close-to-central $pp$ collisions at LHC. The scenario is based on confining SU(2)…

High Energy Physics - Phenomenology · Physics 2015-05-13 Francesco Giacosa , Ralf Hofmann

In this paper we present a model of confinement based on an analogy with the confinement mechanism of the Schwarzschild solution of general relativity. Using recently discovered exact, Schwarzschild-like solutions of the SU(2)…

High Energy Physics - Theory · Physics 2015-06-26 Douglas Singleton , Atsushi Yoshida

We study a toy model for an interacting scalar field theory in which the fundamental excitations are confined in the sense of having unphysical, positivity-violating propagators, a fact tracing back to a decomposition of these in…

High Energy Physics - Theory · Physics 2013-05-01 M. A. L. Capri , D. Dudal , M. S. Guimaraes , L. F. Palhares , S. P. Sorella

We make progress towards a derivation of a low energy effective theory for SU(2) Yang-Mills theory. This low energy action is computed to 1-loop using the renormalization group technique, taking proper care of the Slavnov-Taylor identities…

High Energy Physics - Theory · Physics 2019-02-20 A. N. Efremov

It is shown that an effective theory with meron degrees of freedom produces confinement in SU(2) Yang Mills theory. This effective theory is compatible with center symmetry. When the scale is set by the string tension, the action density…

High Energy Physics - Theory · Physics 2008-11-26 F. Lenz , J. W. Negele , M. Thies

We analyze a thought neutrino oscillation experiment in which neutrinos are produced by electrons colliding with atomic nuclei of a target. The neutrinos are detected by observing charged leptons, which are produced by neutrinos colliding…

High Energy Physics - Phenomenology · Physics 2007-05-23 A. D. Dolgov , L. B. Okun , M. V. Rotaev , M. G. Schepkin

We propose a model based on the $SU(5)$ grand unification with an extra $Z_{2}\otimes Z_{2}^{\prime}\otimes Z_{2}^{\prime \prime}\otimes Z_{4}\otimes Z_{12}$ flavor symmetry, which successfully describes the observed SM fermion mass and…

High Energy Physics - Phenomenology · Physics 2014-11-13 A. E. Cárcamo Hernández , Sergey Kovalenko , Iván Schmidt

We study excitations of LLM geometries. These geometries arise from the backreaction of a condensate of giant gravitons. Excitations of the condensed branes are open strings, which give rise to an emergent Yang-Mills theory at low energy.…

High Energy Physics - Theory · Physics 2018-08-15 Robert de Mello Koch , Jia-Hui Huang , Laila Tribelhorn

Magnetic excitations play a crucial role in understanding the color confinement of $4$d Yang-Mills theory, and we have the monopole and the center vortex as plausible candidates to explain its mechanism. Under suitable compactified setups…

High Energy Physics - Theory · Physics 2024-10-25 Yui Hayashi , Yuya Tanizaki
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