Algumas discussões adicionais sobre o método de determinação de p , a razão entre a parte real e a parte imaginária da amplitude de espalhamento hadrônico elástico na direção para frente, a altas energias

Antonio Braz de Pádua; Cléia Guiotti de Pádua

doi:10.5433/1679-0375.2004v25n1p59

Some additional comments about the determination of ?, the ratio between the real part and the imaginary part of the forward elastic amplitude, in hadron collisions at high energies

Authors

Antonio Braz de Pádua Universidade Estadual de Londrina
Cléia Guiotti de Pádua Universidade Estadual de Londrina

DOI:

https://doi.org/10.5433/1679-0375.2004v25n1p59

Keywords:

Elastic Scattering, High Energies, Proton, Antiproton, Elastic Scattering Amplitude, Elastic Differential Cross Section, Small Momentum Transfer, Coulomb Region, Coulomb Interference Region, Hadronic Region.

Abstract

The correct method of determination of ?, the ratio between the real and imaginary part of the elastic scattering amplitude in the forward direction, in the hadronic collisions at high energy, remains as an is still considered an open subject up till now. In this work we come back to discuss this problem and present two alternative fits for adjustment of the experimental data of d?/dt in the Coulomb – Hadronic Interference region are presented, consequently obtaining as well as the value of ?. Our proposals were tested with the data obtained in the polemic experiment accomplished in CERN in 1986 by the UA4/1 collaboration for the pp collision at s = 546GeV. Using these same data, we calculated the variable ? again and we found values much smaller than the original value of 0.24 ± 0.04, namely, 0.197 ± 0.020 and 0.189 ± 0.030.

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Author Biographies

Antonio Braz de Pádua, Universidade Estadual de Londrina

Doutor em Física, Professor Associado C, Departamento de Física, Centro de Ciências Exatas, Universidade Estadual de Londrina.

Cléia Guiotti de Pádua, Universidade Estadual de Londrina

Mestre em Física, Professor Adjunto D, Departamento de Física, Centro de Ciências Exatas, Universidade Estadual de Londrina.

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Published

2004-12-15

How to Cite

Pádua, A. B. de, & Pádua, C. G. de. (2004). Some additional comments about the determination of ?, the ratio between the real part and the imaginary part of the forward elastic amplitude, in hadron collisions at high energies. Semina: Ciências Exatas E Tecnológicas, 25(1), 59–68. https://doi.org/10.5433/1679-0375.2004v25n1p59

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Issue

Vol. 25 No. 1 (2004)

Section

Original Article

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