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Arleo F.,University of Savoy | Arleo F.,CERN | Peigne S.,CNRS Laboratory of Subatomic Physics and Associated Technologies
Physical Review Letters | Year: 2012

The effects of energy loss in cold nuclear matter on J/ψ suppression in p-A collisions are studied. A simple model based on first principles and depending on a single free parameter is able to reproduce J/ψ suppression data at large x F and at various center-of-mass energies. These results strongly support energy loss as a dominant effect in quarkonium suppression. They also give some hint on its hadroproduction mechanism suggesting color neutralization to happen on long time scales. Predictions for J/ψ and Υ suppression in p-Pb collisions at the LHC are made. © 2012 American Physical Society.

Sood A.D.,CNRS Laboratory of Subatomic Physics and Associated Technologies
Physical Review C - Nuclear Physics | Year: 2011

We study the N/Z and N/A dependence of balance energy (Ebal) for isotopic series of Ca having N/Z (N/A) varying from 1.0 to 2.0 (0.5 to 0.67). We show that the N/Z (N/A) dependence of Ebal is sensitive to symmetry energy and its density dependence at densities higher than saturation density and is insensitive toward the isospin dependence of nucleon-nucleon (nn) cross section and Coulomb repulsion. We also study the effect of momentum-dependent interactions (MDI) on the N/Z (N/A) dependence of E bal. We find that although MDI influences the Ebal drastically, the N/Z (N/A) dependence of Ebal remains unchanged on inclusion of MDI. ©2011 American Physical Society.

Gautam S.,Panjab University | Sood A.D.,CNRS Laboratory of Subatomic Physics and Associated Technologies
Physical Review C - Nuclear Physics | Year: 2010

We study the effect of isospin degree of freedom on balance energy throughout the mass range between 50 and 350 for two sets of isotopic systems with N/A= 0.54 and 0.57 as well as isobaric systems with N/A= 0.5 and 0.58. Our findings indicate that different values of balance energy for two isobaric systems may be mainly due to the Coulomb repulsion. We also demonstrate clearly the dominance of Coulomb repulsion over symmetry energy. © 2010 The American Physical Society.

Cutler C.S.,University of Missouri | Hennkens H.M.,University of Missouri | Sisay N.,University of Missouri | Huclier-Markai S.,CNRS Laboratory of Subatomic Physics and Associated Technologies | Jurisson S.S.,University of Missouri
Chemical Reviews | Year: 2013

A study was conducted to demonstrate the use of radiometals for combined imaging and therapy. The study presented radiometals that had the nuclear properties required for use in theranostic applications for imaging and therapy. Their chemistry and production methods were discussed, along with examples of preclinical and clinical uses. A number of radiometals had been evaluated for positron emission tomography (PET) due to their favorable nuclear properties. The choice of type and energy of the particle emission was determined by the size of the lesion or tumor being treated, site of delivery, whether the tumor was homogeneous, and whether the dose was delivered uniformly to each cell. A major advantage of using such nanosized radioactive particles was their potential to contain numerous radioactive atoms within a single nanoparticle.

Manuel C.,Autonomous University of Barcelona | Torres-Rincon J.M.,CNRS Laboratory of Subatomic Physics and Associated Technologies
Physical Review D - Particles, Fields, Gravitation and Cosmology | Year: 2014

We derive the relativistic chiral transport equation for massless fermions and antifermions by performing a semiclassical Foldy-Wouthuysen diagonalization of the quantum Dirac Hamiltonian. The Berry connection naturally emerges in the diagonalization process to modify the classical equations of motion of a fermion in an electromagnetic field. We also see that the fermion and antifermion dispersion relations are corrected at first order in the Planck constant by the Berry curvature, as previously derived by Son and Yamamoto for the particular case of vanishing temperature. Our approach does not require knowledge of the state of the system, and thus it can also be applied at high temperature. We provide support for our result by an alternative computation using an effective field theory for fermions and antifermions: the on-shell effective field theory. In this formalism, the off-shell fermionic modes are integrated out to generate an effective Lagrangian for the quasi-on-shell fermions/antifermions. The dispersion relation at leading order exactly matches the result from the semiclassical diagonalization. From the transport equation, we explicitly show how the axial and gauge anomalies are not modified at finite temperature and density despite the incorporation of the new dispersion relation into the distribution function. © 2014 American Physical Society.

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