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40 years after its introduction, the phenomenon of color transparency remains a domain of controversial interpretations of experimental data. We review present evidence for or against its manifestation in various exclusive hard scattering…

High Energy Physics - Phenomenology · Physics 2022-03-08 P. Jain , B. Pire , J. P. Ralston

Properties of hadrons and their modification within strongly interacting matter provide a link between experimental observables and Quantum Chromodynamics (QCD) in the non-perturbative sector. The sensitivity of various observables to…

The dynamics of nuclear transparency in hard nuclear reactions is studied by an expansion of the correlator of the hard scattering operator on a hadronic basis. Colour transparency appears as an effect of interference between the amplitudes…

Nuclear Theory · Physics 2007-05-23 A. Bianconi , S. Boffi , D. E. Kharzeev

Color transparency CT depends on the formation of a wavepacket of small spatial extent. It is useful to interpret experimental searches for CT with a multiple scattering scattering series based on wavepacket-nucleon scattering instead of…

High Energy Physics - Phenomenology · Physics 2008-11-26 W. R. Greenberg , G. A. Miller

Deep inelastic neutron scattering experiments using indirect time-of-flight spectrometers have reported a smaller cross section for the hydrogen atom than expected from conventional scattering theory. Typically, at large momentum transfers,…

Statistical Mechanics · Physics 2015-05-13 C. Stock , R. A. Cowley , J. W. Taylor , S. M. Bennington

The hard proton knock-out by the proton from the deuteron at relativistic energies is considered with a focus on the color transparency (CT) effect which influences the initial and final state interactions. The calculations are performed in…

Nuclear Theory · Physics 2023-01-31 A. B. Larionov

A new linked cluster expansion for the calculation of ground state observables of complex nuclei with realistic interactions has been developed [1-3]; using the V8' potential [4] the ground state energy, density and momentum distribution of…

Nuclear Theory · Physics 2007-05-23 M. Alvioli , C. Ciofi degli Atti , I. Marchino , H. Morita

The quasielastic (e,e$^\prime$p) reaction was studied on targets of deuterium, carbon, and iron up to a value of momentum transfer $Q^2$ of 8.1 (GeV/c)$^2$. A nuclear transparency was determined by comparing the data to calculations in the…

High Energy Physics - Experiment · Physics 2008-11-26 K. Garrow

We examine the potential of the COMPASS experiment at CERN to study color transparency via exclusive coherent vector meson production in hard muon-nucleus scattering. It is demonstrated that COMPASS has high sensitivity to test this…

High Energy Physics - Experiment · Physics 2008-11-26 Murray Moinester , Oleg A. Grajek , Eli Piasetzky , Andrzej Sandacz

We propose that measuring the $Q^2$ dependence of the number of final-state interactions of the recoil protons in quasi-elastic electron scattering from light nuclei is a new method to investigate Color Coherent effects at {\bf…

Nuclear Theory · Physics 2009-10-28 K. Egiyan , L. Frankfurt , W. R. Greenberg , G. A. Miller , M. Sargsyan , M. Strikman

Quasi-elastic scattering on $^{12}$C$(e,e'p)$ was measured in Hall C at Jefferson Lab for space-like 4-momentum transfer squared $Q^2$ in the range of 8--14.2\,(GeV/$c$)$^2$ with proton momenta up to 8.3\,GeV/$c$. The experiment was carried…

We examine the potential of the COMPASS experiment at CERN to study color transparency via exclusive coherent vector meson production in hard muon-nucleus scattering. It is demonstrated that COMPASS has high sensitivity to test this…

High Energy Physics - Experiment · Physics 2009-11-07 M. Moinester , O. A. Grajek , E. Piasetzky , A. Sandacz

This dissertation explores two main topics: 1) Color Transparency and quasi-elastic knockout reactions involving pions and $\rho$ mesons; and 2) determination of the $J/\psi$-nucleon scattering amplitude and scattering length via $J/\psi$…

Nuclear Theory · Physics 2013-03-13 Gary T. Howell

We examine the potential of the COMPASS experiment at CERN to study color transparency via exclusive vector meson production in hard muon-nucleus scattering. It is demonstrated that COMPASS has high sensitivity to test this important…

High Energy Physics - Experiment · Physics 2007-05-23 Andrzej Sandacz , Oleg A. Grajek , Murray Moinester , Eli Piasetzky

The color transparency (CT) of a hadron, propagating with reduced absorption in a nucleus, is a fundamental property of QCD (quantum chromodynamics) reflecting its internal structure and effective size when it is produced at high transverse…

High Energy Physics - Phenomenology · Physics 2022-06-02 Stanley J. Brodsky , Guy F. de Teramond

So far no theoretical tool for the comprehensive description of exclusive electroproduction of vector mesons off nuclei at medium energies has been developed. We suggest a light-cone QCD formalism which is valid at any energy and…

High Energy Physics - Phenomenology · Physics 2009-11-07 B. Z. Kopeliovich , J. Nemchik , A. Schaefer , A. V. Tarasov

In this article we review our work on the production of hadrons in the nuclear environment. We work with a string-breaking model for the initial production of hadrons and with a quantum-kinetic transport model (GiBUU) to describe the final…

Nuclear Theory · Physics 2022-04-20 Kai gallmeister , Ulrich Mosel

The A-dependence of the quasielastic A(e,e'p) reaction has been studied at SLAC with H-2, C, Fe, and Au nuclei at momentum transfers Q^2 = 1, 3, 5, and 6.8 (GeV/c)^2. We extract the nuclear transparency T(A,Q^2), a measure of the average…

High Energy Physics - Phenomenology · Physics 2016-09-01 T. G. O'Neill

It is argued that color transparency in quasi elastic scattering of electrons and hadrons on nuclei is possible only due to Fermi-motion. We found a strong dependence of nuclear transparency on Bjorken x in (e,e'p), it is close to the…

High Energy Physics - Phenomenology · Physics 2009-10-22 Byron K. Jennings , Boris Z. Kopeliovich

The present work reports the use of nuclear transparency effect of protons in proton and deuteron carbon interactions at 4.2 A GeV/c to get information about the states of nuclear matter. The half angle technique is used to extract the…

Nuclear Experiment · Physics 2013-01-14 M. Ajaz , M. K. Suleymanov , K. H. Khan , A. Zaman