2,009 research outputs found
Cronin effect and energy conservation constraints in pA collisions at LHC and RHIC
We evaluate the Cronin effect in pA collisions at the CERN LHC and at RHIC in
the framework of Glauber-Eikonal model of initial state multiparton
interactions. Taking carefully into account all kinematical constraints of each
multi-parton interaction process we obtain a softening of the spectrum of
produced partons, improving in this way the agreement of the model with the
recent measurements of pi0 production in d+Au collisions at sqrt{s}=200 AGeV.Comment: Proceeding of 34th International Symposium on Multiparticle dynamics
(ISMD), Sonoma California, 26th-1st Aug 2004, to be published in Acta Phisica
Polonica
Hard Inelastic Interactions at Parton and Hadron Level
In the study of multiple scattering of partons in hadron-hadron collisions
the possibility of a hard inelastic process at the parton level is included in
its simplest possible way, including the transition.
The specific physical process to which the treatment is applied is the
inelastic collision of a nucleon with a heavy nucleusComment: 4 pages, talk given at XXXI International Symposium on Multiparticle
Dynamics, Sept 1-7, 2001, Datong China. URL http://ismd31.ccnu.edu.cn
Entanglement, Superselection Rules and Supersymmetric Quantum Mechanics
In this paper we show that the energy eigenstates of supersymmetric quantum
mechanics (SUSYQM) with non definite "fermion" number are entangled states.
They are "physical states" of the model provided that observables with odd
number of spin variables are allowed in the theory like it happens in the
Jaynes-Cummings model. Those states generalize the so called "spin spring"
states of the Jaynes-Cummings model which have played an important role in the
study of entanglement.Comment: 2 words added in the title, a section (IV) added in the text, a new
author joined the projec
Least-action principle and path-integral for classical mechanics
In this paper we show how the equations of motion of a superfield, which
makes its appearance in a path-integral approach to classical mechanics, can be
derived without the need of the least-action principleComment: to appear IN PHYS.REV.D (Brief Report
Colour Perception Between Psychology and Art
The poster refers to important contributions of psychological
research on colours. Special emphasis is given to the
fundamental classification proposed by David Katz, who
strongly influenced subsequent studies; e.g., those by Karl
BuÌhler and Gaetano Kanizsa. In particular, the opposition
between diaphanic and epiphanic colours is discussed and
applied to two recent paintings of a contemporary
experimental artist
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