Fusion of strings as a hadronic accelerator

نویسندگان

  • N. Armesto
  • M. A. Braun
  • E. G. Ferreiro
چکیده

It is shown that the fusion of strings is a source of particle production in nucleus–nucleus collisions outside the kinematical limits of nucleon–nucleon collisions. The spectrum of different particles is compared with the high energy data on p–A collisions obtaining a reasonable agreement. Results for A–B collisions at √ s = 19.4 AGeV and √ s = 200 AGeV are given. It is shown that the fusion of strings can accelerate particles up to the highest energy detected in cosmic rays without help of any additional cosmic accelerator. Also the rise of the average shower depth of maximun for cosmic rays in the energy range between 10 eV and 10 eV can be explained by the same mechanism without requiring any change in the chemical composition. ∗ Visiting Professor IBERDROLA. Permanent address: Department of High Energy Physics, University of St. Petersburg, 198904 St. Petersburg, Russia. ∗∗ Permanent address: Petersburg Nuclear Physics Institute, Gatchina, 188350 St. Petersburg, Russia.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Space-time Picture of the String Fragmentation and the Fusion of Colour Strings

It is shown that näıve two stage scenario of the soft multiparticle production in hadronic and nuclear collisions at high energy, when at first stage the colour strings are formed and at the second stage these strings, or some other (higher colour) strings formed due to fusion of primary strings, are decaying, emitting observed particles, encounters some difficulties at the attempt to analyse t...

متن کامل

d–Au and p–p collisions at RHIC and the multichain Monte Carlo Dpmjet-III ∗

In this paper we compare systematically the two-component Dual Parton Model (DPM) event generator Dpm-jet-III to d-Au and p–p data from RHIC. In this process we are able to improve the model. The need for fusion of chains and a recalibration of the model to obtain collision scaling in h-A and d-A collisions was found already in previous comparisons. Here, comparing to transverse momentum distri...

متن کامل

ar X iv : h ep - p h / 05 01 17 9 v 1 1 9 Ja n 20 05 MULTIPLICITY AND p t CORRELATIONS IN RELATIVISTIC NUCLEAR COLLISIONS

The theoretical description of the correlations between observables in two separated rapidity intervals for AA-interactions at high energies is presented. In the case with the real nucleon distribution density of colliding nuclei the MC calculations of the long-range correlation functions at different values of impact parameter are done. For n–n and p t –n correlations it is shown that the impa...

متن کامل

Kloe Perspectives for R-measurements at Dafne2

As a future upgrade of the Frascati φ factory DAΦNE an increase of the center-of-mass energy of the accelerator up to W = 2 GeV has been proposed (DAFNE2). In this case the hadronic cross section in the energy range between 1−2 GeV can be measured with the KLOE detector. The feasibility of these measurements and the impact on the hadronic contribution to the anomalous magnetic moment of the muo...

متن کامل

/ 97 07 36 3 v 1 1 6 Ju l 1 99 7 Fusion of strings vs . percolation and the transition to the quark gluon plasma

In most of the models of hadronic collisions the number of exchanged colour strings grows with energy and atomic numbers of the projectile and target. At high string densities interaction between them becomes important, which should melt them into the quark-gluon plasma state in the end. It is shown that under certain reasonable assumptions about the the string interaction, a phase transition t...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 1996