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A basic theoretical framework is developed in which elementary particles have a component of their wave function extending into higher spatial dimensions. This model postulates an extension of the Schrodinger equation to include a 4th and…

General Physics · Physics 2016-05-16 Eric R. Hedin

Elastic scattering data gained for proton-proton collisions at high energies are being analyzed at the present practically only with the help of purely phenomenological mathematical models. And the question exists whether in the impact…

High Energy Physics - Phenomenology · Physics 2009-09-18 Milos V. Lokajicek , V. Kundrat

We compute the dominant QED correction to the neutrino-electron interaction rate in the vicinity of neutrino decoupling in the early universe, and estimate its impact on the effective number of neutrino species $N_{\rm eff}$ in cosmic…

High Energy Physics - Phenomenology · Physics 2024-06-17 Marco Drewes , Yannis Georis , Michael Klasen , Luca Paolo Wiggering , Yvonne Y. Y. Wong

A search for stable and long-lived massive particles of electric charge |Q/e| = 1 or 2/3, pair-produced in e+e- collisions at centre-of-mass energies from 130 to 183 GeV, is reported by the OPAL collaboration at LEP. No evidence for…

High Energy Physics - Experiment · Physics 2008-11-26 The OPAL Collaboration , K. Ackerstaff et al

The interaction of virtual photons is investigated using the reaction e+e- -> e+e- hadrons based on data taken by the OPAL experiment at e+e- centre-of-mass energies sqrt(s_ee)=189-209 GeV, for W>5 GeV and at an average Q^2 of 17.9 GeV^2.…

High Energy Physics - Experiment · Physics 2008-11-26 The OPAL collaboration , G. Abbiendi

We investigate the modification of the transverse electromagnetic interaction between two point-like particles when one particle acquires a finite size. It is shown that the correct treatment of such interaction cannot be accomplished…

Atomic Physics · Physics 2024-01-12 Krzysztof Pachucki , Vladimir A. Yerokhin

This is a historical account from my personal perspective of the development over the last few decades of the standard model of particle physics. The model is based on gauge theories, of which the first was quantum electrodynamics,…

History and Philosophy of Physics · Physics 2014-12-15 Tom W. B. Kibble

The first LHC results at 7-8 TeV, with the discovery of a candidate Higgs boson and the non observation of new particles or exotic phenomena, have made a big step towards completing the experimental confirmation of the Standard Model (SM)…

High Energy Physics - Phenomenology · Physics 2013-11-05 Guido Altarelli

Data from the Large Electron Positron collider (LEP) at CERN on hadron production in gamma-gamma interactions exceed the predictions of the standard model by an order of magnitude at the highest observed transverse momenta in three…

High Energy Physics - Phenomenology · Physics 2009-08-20 Philip Yock

A recent 15 parts-per-million (ppm) experiment on muonic hydrogen found a major discrepancy with QED and independent nuclear size determinations. Here we find a significant discrepancy in a different type of exotic atom, a medium-Z nucleus…

In recent years, an interest in the study of quantum information has grown within the high-energy particle physics community. The possibility to establish the presence of entanglement at particle colliders, such as the Large Hadron Collider…

High Energy Physics - Phenomenology · Physics 2022-11-09 Luca Mantani

Superscaling analyses of inclusive electron scattering from nuclei are extended from the quasielastic processes to the delta excitation region. The calculations of $(e,e^\prime)$ cross sections for the target nucleus $^{12}$C at various…

The high-precision HERA data allow searches for up to TeV scales "Beyond the Standard Model" contributions to electron-quark scattering. Combined H1 and ZEUS measurements of inclusive deep inelastic cross sections in neutral and charged…

High Energy Physics - Experiment · Physics 2016-11-14 Aleksander Filip Zarnecki

The phenomenon of superscaling for quasielastic lepton induced reactions at energies of a few GeV is investigated within the framework of the relativistic impulse approximation. A global analysis of quasielastic inclusive electron and…

Nuclear Theory · Physics 2009-11-11 J. A. Caballero

The energy and angular dependence of double differential cross sections d2sigma/dOmega dE were measured for p, d, t, 3,4,6He, 6,7,8Li, 7,9,10Be, 10,11B, and C produced in collisions of 1.2, 1.9, and 2.5 GeV protons with a Ni target. The…

The particle production in relativistic heavy-ion collisions seems to be created in a dynamically disordered system which can be best described by an extended exponential entropy. In distinguishing between the applicability of this and…

Nuclear Theory · Physics 2018-05-29 Abdel Nasser Tawfik , Hayam Yassin , Eman R. Abo Elyazeed

Searches for physics beyond the Standard Model are reported from electron-proton collisions at a center of mass energy of 318 GeV. Results on a completely model independent search for deviations from Standard Model predictions at large…

High Energy Physics - Experiment · Physics 2007-11-06 Peter Schleper

The electric form factor of the neutron was determined from studies of the reaction He3(e,e'n)pp in quasi-elastic kinematics in Hall A at Jefferson Lab. Longitudinally polarized electrons were scattered off a polarized target in which the…

Nuclear Experiment · Physics 2011-01-28 S. Riordan , S. Abrahamyan , B. Craver , A. Kelleher , A. Kolarkar , J. Miller , G. D. Cates , N. Liyanage , B. Wojtsekhowski , A. Acha , K. Allada , B. Anderson , K. A. Aniol , J. R. M. Annand , J. Arrington , T. Averett , A. Beck , M. Bellis , W. Boeglin , H. Breuer , J. R. Calarco , A. Camsonne , J. P. Chen , E. Chudakov , L. Coman , B. Crowe , F. Cusanno , D. Day , P. Degtyarenko , P. A. M. Dolph , C. Dutta , C. Ferdi , C. Fernandez-Ramirez , R. Feuerbach , L. M. Fraile , G. Franklin , S. Frullani , S. Fuchs , F. Garibaldi , N. Gevorgyan , R. Gilman , A. Glamazdin , J. Gomez , K. Grimm , J. O. Hansen , J. L. Herraiz , D. W. Higinbotham , R. Holmes , T. Holmstrom , D. Howell , C. W. deJager , X. Jiang , M. K. Jones , J. Katich , L. J. Kaufman , M. Khandaker , J. J. Kelly , D. Kiselev , W. Korsch , J. LeRose , R. Lindgren , P. Markowitz , D. J. Margaziotis , S. May-Tal Beck , S. Mayilyan , K. McCormick , Z. E. Meziani , R. Michaels , B. Moffit , S. Nanda , V. Nelyubin , T. Ngo , D. M. Nikolenko , B. Norum , L. Pentchev , C. F. Perdrisat , E. Piasetzky , R. Pomatsalyuk , D. Protopopescu , A. J. R. Puckett , V. A. Punjabi , X. Qian , Y. Qiang , B. Quinn , I. Rachek , R. D. Ransome , P. E. Reimer , B. Reitz , J. Roche , G. Ron , O. Rondon , G. Rosner , A. Saha , M. Sargsian , B. Sawatzky , J. Segal , M. Shabestari , A. Shahinyan , Yu. Shestakov , J. Singh , S. Sirca , P. Souder , S. Stepanyan , V. Stibunov , V. Sulkosky , S. Tajima , W. A. Tobias , J. M. Udias , G. M. Urciuoli , B. Vlahovic , H. Voskanyan , K. Wang , F. R. Wesselmann , J. R. Vignote , S. A. Wood , J. Wright , H. Yao , X. Zhu

This Letter describes a model-agnostic search for pairs of jets (dijets) produced by resonant and non-resonant phenomena beyond the Standard Model in 3.6 fb$^{-1}$ of proton-proton collisions with a centre-of-mass energy of $\sqrt{s}=13$…

High Energy Physics - Experiment · Physics 2016-03-04 ATLAS Collaboration

A thought experiment is formulated to unify quantum mechanics and general relativity in a topological manner. An analysis of the interactions in Nature is then presented. The universal ground state of the constructed theory derives from the…

High Energy Physics - Theory · Physics 2007-05-23 Marco Spaans