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A new method for the determination of the real part of the elastic scattering amplitude is examined for high energy proton-proton elastic scattering at small momentum transfer. This method allows us to decrease the number of model…

High Energy Physics - Phenomenology · Physics 2009-11-10 P. Gauron , B. Nicolescu , O. V. Selyugin

Proton-proton elastic scattering at high energy is a process with simple kinematics but surprisingly complex dynamics. Measurements of these processes at particle colliders require dedicated detectors and unusual measurement conditions. In…

High Energy Physics - Experiment · Physics 2025-01-28 Rafał Staszewski

Elastic scattering cross sections are measured for lithium atoms colliding with rare gas atoms and SF6 molecules at tunable relative velocities down to ~50 m/s. Our scattering apparatus combines a velocity-tunable molecular beam with a…

Atomic Physics · Physics 2015-06-05 M. Strebel , T. -O. Mueller , B. Ruff , F. Stienkemeier , M. Mudrich

Analysis of data involving nuclei far from stability often requires optical potential (OP) for neutron scattering. Since neutron data is seldom available, while proton scattering data is more abundant, it is useful to have estimates of the…

Nuclear Experiment · Physics 2015-06-04 R. P. DeVito , Dao T. Khoa , Sam M. Austin , U. E. P. Berg , Bui Minh Loc

We describe a self calibrating optical technique that allows to perform absolute measurements of scattering cross sections for the light scattered at extremely small angles. Very good performances are obtained by using a very simple optical…

Optics · Physics 2009-11-10 Doriano Brogioli , Alberto Vailati , Marzio Giglio

This is the first of the series of papers which present a precision method of the day-by-day monitoring of the absolute LHC luminosity. The method is based on the measurement of the rate of coplanar lepton pairs produced in peripheral…

High Energy Physics - Experiment · Physics 2008-11-26 M. W. Krasny , J. Chwastowski , K. Slowikowski

The TOTEM experiment at the LHC is equipped with near beam movable devices -- called Roman Pots (RP) -- which detect protons scattered at the interaction point (IP5) arriving to the detectors through the magnet lattice of the LHC. Proton…

Accelerator Physics · Physics 2012-08-10 F. Nemes , H. Niewiadomski

It has been suggested that two-photon exchange corrections could explain the discrepancy between Rosenbluth extractions of the proton form factors and recent polarization transfer measurements. We propose a precise comparison of…

The cross section of elastic electron-proton scattering taking place in an electron gas is calculated within the Closed Time Path method. It is found to be the sum of two terms, one being the expression in the vacuum except that it involves…

High Energy Physics - Theory · Physics 2013-05-30 Janos Polonyi , Karima Zazoua

The Compton scattering cross section on the proton has been measured at laboratory angles of 90$^\circ$ and 135$^\circ$ using tagged photons in the energy range 70--100 MeV and simultaneously using untagged photons in the range…

Nuclear Experiment · Physics 2008-11-26 B. E. MacGibbon , G. Garino , M. A. Lucas , A. M. Nathan , G. Feldman , B. Dolbilkin

The OPERA experiment is based on a hybrid technology combining electronic detectors and nuclear emulsions. OPERA collected muon-neutrino interactions during the 2008 and 2009 physics runs of the CNGS neutrino beam, produced at CERN with an…

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

This paper investigates the number of scatterings a photon undergoes in random walks before escaping from a medium. The number of scatterings in random walk processes is commonly approximated as $\tau+\tau^2$ in the literature, where $\tau$…

Astrophysics of Galaxies · Physics 2023-12-27 Kwang-Il Seon , Hyung-Joe Kim , Hee-Gyeong Kim , Hyeon Jeong Youn

The process of elastic scattering of photons (scattering of light by light) has attracted much attention in recent years. It goes through a loop where all the charged particles contribute to the cross section. To date, this $\gamma\gamma…

High Energy Physics - Phenomenology · Physics 2025-12-02 K. I. Beloborodov , T. A. Kharlamova , V. I. Telnov

In these notes we present a detailed and complete scheme for the calculation of polarization phenomena in elastic electron-nucleon scattering. The longitudinal and transversal components of the polarization for the scattered nucleon,…

Nuclear Theory · Physics 2007-05-23 Michail P. Rekalo , Egle Tomasi-Gustafsson

We present theoretical predictions for electron scattering on the N = 14, 20, and 28 isotonic chains from proton-deficient to proton-rich nuclei. The calculations are performed within the framework of the distorted-wave Born approximation…

Nuclear Theory · Physics 2014-04-01 Andrea Meucci , Matteo Vorabbi , Carlotta Giusti , Franco Davide Pacati , Paolo Finelli

We propose possible methods to measure the nucleon electromagnetic form factors in presence of two-photon exchange. Using a general parametrization of the spin structure of the matrix element for elastic $eN$-scattering, in terms of three…

Nuclear Theory · Physics 2009-11-10 M. P. Rekalo , E. Tomasi-Gustafsson

Electron energy loss spectroscopy is consolidating as a powerful tool to explore electronic (as well as vibrational) excitations of matter, including molecules. Performed in a scanning transmission electron microscope, this technique is…

Chemical Physics · Physics 2021-03-05 Ciro A. Guido , Enzo Rotunno , Matteo Zanfrognini , Stefano Corni , Vincenzo Grillo

Cross sections for elastic Compton scattering from the deuteron were measured over the laboratory angles 35-150 deg. Tagged photons in the laboratory energy range 84-105 MeV were scattered from liquid deuterium and detected in the…