English
Related papers

Related papers: Nucleon mass: trace anomaly and $\sigma$-terms

200 papers

In anomaly free gauged three-flavor SU(3)_f x SU(2)_L x U(1)_Y model of Yanagida with fermion and gauge boson masses described by conveniently chosen elementary scalar Higgs fields the neutrino mass matrix comes out in the seesaw form.…

High Energy Physics - Phenomenology · Physics 2017-04-25 Jiri Hosek

The Large Hadron Collider (LHC) has confirmed the Higgs mechanism to be responsible for generating mass in the Standard Model (SM), making it attractive to also consider spontaneous symmetry breaking as the origin of mass for new particles…

High Energy Physics - Phenomenology · Physics 2024-02-20 Torben Ferber , Alexander Grohsjean , Felix Kahlhoefer

In this work, we present a unified theoretical framework that simultaneously addresses some of the most intriguing puzzles in particle physics and cosmology, namely the origins of neutrino mass, baryon asymmetry, and cosmic inflation. In…

High Energy Physics - Phenomenology · Physics 2024-09-05 Ajay Kaladharan , Shaikh Saad

Sterile neutrinos have been invoked to explain the observed neutrino masses, but they can also have significant implications for cosmology and accelerator experiments. We explore the collider signatures of a simple extension of the Standard…

High Energy Physics - Phenomenology · Physics 2010-10-27 Ian M. Shoemaker , Kalliopi Petraki , Alexander Kusenko

The problem of an active neutrinos mass origin is considered at the phenomenological level. At first an assumption is made that neutrino mass values depend on two contributions with their characteristic scales, a next assumption consists in…

High Energy Physics - Phenomenology · Physics 2024-12-30 V. V. Khruschov

This work verifies the principle that gravitation is caused by {\it energy} and not simply by mass alone. A model is proposed in which cosmic ray protons flow radially through the galaxy. The resulting electric field energy creates a…

General Physics · Physics 2014-07-29 Kenneth Dalton

Strange matrix elements of the nucleon are calculated within the light-cone formulation of the meson cloud model. The $Q^2$ dependence of the strange vector and axial vector form factors is computed, and the strangeness radius and magnetic…

High Energy Physics - Phenomenology · Physics 2008-11-26 W. Melnitchouk , M. Malheiro

We discuss the general method of the calculation of the nucleon matrix elements of an operator associated with nonvalence quarks. The method is based on the QCD sum rules and low energy theorems. As an application of these considerations,…

High Energy Physics - Phenomenology · Physics 2011-04-15 Ariel R. Zhitnitsky

This paper belongs to the series devoted to the calculation of particle masses in the framework of p-adic conformal field theory limit of Topological GeometroDynamics. In paper II the general formulation of p-adic Higgs mechanism was given.…

High Energy Physics - Theory · Physics 2008-02-03 M. Pitkänen

A description of neutrino oscillation phenomena is presented which is based on relativistic quantum mechanics and includes both entangled state and source dependent aspects, unlike both of the conventional approaches which use either equal…

High Energy Physics - Phenomenology · Physics 2010-11-15 T. Goldman

We calculate the corrections to the strange matrix elements of the nucleon resulting from the breaking of rotational invariance on the light-cone. In the meson cloud model, the strange magnetic moment mu_S is seen to change sign once the…

High Energy Physics - Phenomenology · Physics 2008-11-26 M. Malheiro , W. Melnitchouk

In this paper we give the outline of a lecture given to undergraduate students aiming at understanding why physicists are so much interested in the Higgs boson. The lecture has been conceived for students not yet familiar with advanced…

Popular Physics · Physics 2012-08-01 Giovanni Organtini

The masses of the quarks and leptons are for the most part a mystery to particle physicists. Currently there seems to be no correlation between the masses of the elementary particles. This paper is an attempt to formulate a theory that…

Nuclear Theory · Physics 2007-05-23 Theodore M. Lach

Small realistic Majorana neutrino masses can be generated via a Higgs triplet $(\xi^{++}, \xi^+, \xi^0)$ without having energy scales larger than $M_*={\cal O}(1)$ TeV in the theory. The large effective mass scale $\Lambda$ in the…

High Energy Physics - Phenomenology · Physics 2009-10-31 Ernest Ma , Martti Raidal , Utpal Sarkar

The mass problem in particle physics and its impact for other fields is discussed. While the problem of the nuclear masses has been resolved within the QCD framework, many parameters of the ``Standard Model'' are related to the fermion…

High Energy Physics - Phenomenology · Physics 2007-05-23 Harald Fritzsch

The D-term is a particle property defined, similarly to the mass and spin, through matrix elements of the energy-momentum tensor. It is currently not known experimentally for any particle, but the D-term of the nucleon can be inferred from…

High Energy Physics - Phenomenology · Physics 2018-03-08 Jonathan Hudson , Peter Schweitzer

It is known that the trace anomaly in the QCD energy-momentum tensor $T^{\mu \nu}$ can be attributed to the anomalies for each of the gauge-invariant quark part and gluon part of $T^{\mu \nu}$, and their explicit three-loop formulas have…

High Energy Physics - Phenomenology · Physics 2023-03-22 Kazuhiro Tanaka

We analize the influence of nuclear effects on the determination of the nucleon axial mass from nuclear cross sections. Our work is based on a formalism widely applied to describe electron-nucleus scattering data in the impulse…

High Energy Physics - Phenomenology · Physics 2009-10-29 Omar Benhar , Davide Meloni

In this paper we consider the space-time of a charged mass endowed with an angular momentum. The geometry is described by the exact Kerr-Newman solution of the Einstein equations. The peculiar symmetry, though exact, is usually described in…

General Relativity and Quantum Cosmology · Physics 2021-03-09 Angelo Tartaglia , Matteo Luca Ruggiero

Absolute values of the neutrino mass are not known still now although their upper bounds are constrained through several experiments and observations. Recent analyses of cosmological observations present severe constraint on the sum of…

High Energy Physics - Phenomenology · Physics 2025-03-18 Daijiro Suematsu