![]() This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Item Type:Īvailable under License - Creative Commons Attribution. We detail relevant technical aspects of our implementation and present numerical results for observables relevant for high-precision Drell–Yan and Higgs boson production and decay simulations at the LHC. To this end, we modify the Yennie– Frautschi–Suura scheme for the resummation of soft photon corrections and its systematic improvement with fixed-order calculations, to also include the effect of virtual corrections due to the exchange of weak gauge bosons. The detailed Monte Carlo study of the proposed setup and the background estimate show that the goal of the proposed search is feasible.We discuss the inclusion of next-to–next-to leading order electromagnetic and of next-to leading order electroweak corrections to the leptonic decays of weak gauge and Higgs bosons in the Sherpa event generator. Search for the Higgs Boson Decaying to Two Muons in Proton-Proton Collisions at root s13 TeV dc.thor, Eerola, P. This method provides independent confirmation of the NA64 published results, validating the tracking procedure. ![]() A dedicated analysis of the available experimental data making use of the trackers information is presented. To reach this goal an optimization of the X 17 production target, as well as an efficient and accurate reconstruction of two close decay tracks, is required. If a signal-like event is detected, an unambiguous observation is achieved by reconstructing the invariant mass of the X 17 decay with the proposed method. Here, we present a new technique that could be implemented in NA64 aiming to improve the sensitivity and to cover the remaining X 17 parameter space. So far, the search for the decay X 17 → e + e - with the NA64 experiment at the CERN SPS gave negative results. ![]() These observations could be explained by the existence of a new vector X 17 boson. Recently, the ATOMKI experiment has reported new evidence for the excess of e + e - events with a mass ∼ 17 MeV in the nuclear transitions of 4 He, that they previously observed in measurements with 8 Be. 16 Universidad Técnica Federico Santa María, 2390123 Valparaiso, Chile.15 Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119991 Moscow, Russia.14 Departamento de Ciencias Físicas, Universidad Andres Bello, Sazié 2212, Piso 7, Santiago, Chile. Authors Mario Gonzlez-Jimnez, Trent Barnard, Ben Russell, Nikita Tukachev, Uro Javornik, Laure-Anne Hayes, Andrew Farrell, Sarah Guinane.13 Universität Bonn, Helmholtz-Institut für Strahlen-und Kernphysik, 53115 Bonn, Germany.Lebedev Physical Institute, 119 991 Moscow, Russia. 11 Physik Department, Technische Universität München, 85748 Garching, Germany.10 Physics Department, University of Patras, 265 04 Patras, Greece.9 Tomsk Polytechnic University, 634050 Tomsk, Russia.8 State Scientific Center of the Russian Federation Institute for High Energy Physics of National Research Center 'Kurchatov Institute' (IHEP), 142281 Protvino, Russia. ![]() 7 UCL Department of Physics and Astronomy, University College London, Gower St., London, WC1E 6BT UK. (2017) Examination of h(x) Real Field of Higgs Boson as Originating in Pre-Planckian Space-Time Early Universe.6 Tomsk State Pedagogical University, 634061 Tomsk, Russia.5 Joint Institute for Nuclear Research, 141980 Dubna, Russia.4 University of Illinois at Urbana Champaign, Urbana, IL 61801-3080 USA.3 CERN, EN-EA, 1211 Geneva 23, Switzerland.2 Institute for Nuclear Research, 117312 Moscow, Russia.1 ETH Zürich Institute for Particle Physics and Astrophysics, 8093 Zurich, Switzerland.
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