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Current issue   Ukr. J. Phys. 2016, Vol. 61, N 12, p.1033-1047
https://doi.org/10.15407/ujpe61.12.1033    Paper

Chudak N.O.1, Merkotan K.K.1, Ptashynskyy D.A.1, Potiyenko O.S.1, Deliyergiyev M.A.2, Tykhonov A.V.3, Sokhrannyi G.O.4, Zharova O.V.5, Berezovskiy O.D.1, Voytenko V.V.1, Volkotrub Yu.V.1, Sharph I.V.1, Rusov V.D.1

Theoretical and experimental nuclear physics Department,
Odessa National Polytechnic University
(Shevchenko Avenue 1, Odessa 65000; e-mail: sharph@ukr.net)
2 Department of High Energy Nuclear Physics, Institute of Modern Physics
(Nanchang Road 509, 730000 Lanzhou, China)
3 D´epartement de physique nucl´eaire et corpusculaire, Universit´e de Gen´eve
(CH-1211 Geneva 4, Switzerland)
4 Department of Experimental Particle Physics, Joˇzef Stefan Institute
(Jamova 39, SI-1000 Ljubljana, Slovenia)
Chair of Advanced mathematics and modeling systems,
Odessa National Polytechnic University
(Shevchenko Avenue 1, Odessa 65000)

Internal states of hadrons in relativistic reference frame

Section: Nuclei and Nuclear Reactions
Original Author's Text: EnglishUkrainian

Abstract:  We consider the problem of internal particle state transformation, which is a bound state of several constituents, from the particle’s rest frame to the system in which this particle is relativistic. It is assumed that in the rest frame of the composite particle, its internal state can be considered in the nonrelativistic approximation. It is shown, that this internal state is unchanged during the transition from one reference frame to another. Namely, given the particle is spherically symmetric in the rest frame, it remains spherically symmetric in any other reference frame, and does not undergo Lorentz contraction along the direction of motion of moving reference frame with respect to the rest frame. We discuss a possible application of these results to the description of hadron-hadron scattering, considering hadrons as a bound states of quarks.

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