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It is shown, that the exponential decrease of the energy spectra of the fragments with growing its energy, which does not depend from the fragment type, targets, projectiles and projectile energies, and which sometimes accompanied slight…

Nuclear Theory · Physics 2019-02-13 S. A. Omelchenko , V. S. Olkhovsky

The problem of spontaneous vacuum decay in low-energy collisions of heavy nuclei is considered beyond the scope of the monopole approximation. The time-dependent Dirac equation is solved in a rotating coordinate system with $z$-axis…

High Energy Physics - Phenomenology · Physics 2023-07-10 Popov R. V. , Shabaev V. M. , Maltsev I. A. , Telnov D. A. , Dulaev N. K. , Tumakov D. A

For the process of single top quark production within the "simplified model" with a scalar dark matter mediator, a new variable based on angular correlations was presented, for the proper reconstruction of which it is necessary to separate…

High Energy Physics - Phenomenology · Physics 2025-04-22 E. Abasov , L. Dudko , E. Iudin , A. Markina , P. Volkov , G. Vorotnikov , M. Perfilov , A. Zaborenko

Top quark physics measurements performed using data from the ATLAS detector at the LHC rely on efficient reconstruction and precise calibration of leptons, jets and missing transverse energy. A review of the techniques used to reconstruct…

High Energy Physics - Experiment · Physics 2016-11-18 Richard Hawkings

This paper is devoted to the study of matter collineations of plane symmetric spacetimes (for a particular class of spacetimes) when the energy-momentum tensor is non-degenerate. There exists many interesting cases where we obtain proper…

General Relativity and Quantum Cosmology · Physics 2009-02-27 M. Sharif , Nousheen Ilyas

It is possible to place constraints on non-Standard-Model gauge-boson self-couplings and other new physics by studying their one-loop contributions to precisely measured observables. We extend previous analyses which constrain such…

High Energy Physics - Phenomenology · Physics 2016-08-25 S. Dawson , S. Alam , R. Szalapski

Having access to the parton-level kinematics is important for understanding the internal dynamics of particle collisions. Here, we present new results aiming to an efficient reconstruction of parton collisions using machine-learning…

High Energy Physics - Phenomenology · Physics 2022-10-10 German F. R. Sborlini , David F. Rentería-Estrada , Roger J. Hernández-Pinto , Pia Zurita

In this paper, we investigate the energy problem in general relativity using approximate Lie symmetry methods for differential equations. This procedure is applied to Bardeen model (the regular black hole solution). Here we are forced to…

General Relativity and Quantum Cosmology · Physics 2011-09-08 M. Sharif , Saira Waheed

We study the pair production of scalar top-quark partners decaying to a top-quark pair plus large missing energy at the LHC, a signature which appears in numerous models that address outstanding problems at the TeV-scale. The severe…

High Energy Physics - Phenomenology · Physics 2013-12-09 Radja Boughezal , Markus Schulze

Heavy quarkonium decays can be used to search for New Physics beyond the Standard Model. In particular, a light Higgs boson could induce a slight (but observable) lepton universality breaking in Upsilon decays. In fact, current experimental…

High Energy Physics - Phenomenology · Physics 2007-05-23 Miguel A. Sanchis-Lozano

A search is performed for an excess of events, over the standard model expectations, with a photon, a lepton, and large missing transverse energy in pp collisions at sqrt(s) = 7 TeV. Such events are expected in many new physics models, in…

High Energy Physics - Experiment · Physics 2012-08-27 CMS Collaboration

A search for dark matter is conducted in events with large missing transverse momentum and a hadronically decaying, Lorentz-boosted top quark. This study is performed using proton-proton collisions at a center-of-mass energy of 13 TeV, in…

High Energy Physics - Experiment · Physics 2018-06-11 CMS Collaboration

This paper belongs to a series devoted to the calculation of particle masses in p-adic conformal field theory limit of TGD. In paper III elementary particle masses were calculated. In this paper the results are analyzed. One can reproduce…

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

A data sample containing top quark pairs ($\mathrm{t\bar{t}}$) produced in association with a Lorentz-boosted Z or Higgs boson is used to search for signs of new physics using effective field theory. The data correspond to an integrated…

High Energy Physics - Experiment · Physics 2023-08-21 CMS Collaboration

We consider the transverse-momentum distribution of colourless high-mass systems (lepton pairs, vector bosons, Higgs particles...) produced in hadronic collisions. We briefly review a formalism for the all-order resummation of the…

High Energy Physics - Phenomenology · Physics 2009-08-11 M. Grazzini

Electromagnetic and strong hadron processes at low energies are considered in the renormalizable model with the spontaneously broken $U_0(1)\times U(1)\times SU(2)$ gauge symmetry. Calculated radiative widths of vector mesons and effective…

High Energy Physics - Phenomenology · Physics 2011-03-29 V. Beylin , V. Kuksa , G. Vereshkov

In part I and II of this series of papers all elements have been introduced to extend, to two loops, the set of renormalization procedures which are needed in describing the properties of a spontaneously broken gauge theory. In this paper,…

High Energy Physics - Phenomenology · Physics 2008-11-26 S. Actis , G. Passarino

In a recent paper a model of quark and lepton masses was proposed. Without any family symmetries almost all the qualitative and quantitative features of the quark and lepton masses and Kobayashi-Maskawa mixing angles are explained,…

High Energy Physics - Phenomenology · Physics 2014-11-17 K. S. Babu , S. M. Barr

We discuss low energy threshold effects and calculate the sparticle masses in the context of the Minimal Supersymmetric Standard Model. We pay particular attention to the top squark and the Higgs mass parameters, and calculate the top…

High Energy Physics - Phenomenology · Physics 2009-10-28 G. K. Leontaris , N. D. Tracas

Final states in collider experiments are characterized by correlation functions, $\langle E(\vec n_1) \cdots E(\vec n_k) \rangle$, of the energy flow operator $ E(\vec n_i)$. We show that the top quark imprints itself as a peak in the…

High Energy Physics - Phenomenology · Physics 2023-07-18 Jack Holguin , Ian Moult , Aditya Pathak , Massimiliano Procura