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Title: Origin Of The Light Neutral Boson Observed In Heavy Ion Collisions

Abstract

We report the results of (e+ e- pairs) produced during the interactions of 200A GeV 32S with emulsion nuclei. The results for the electron pairs suggest that they originate from light neutral bosons emitted during the collision. The origin of such neutral bosons could be due to de-excitation of the produced fragments 4He, 8Be and 12C resulting in 32S fragmentation. The masses of the neutral bosons were estimated from electron kinematics and found to be equal 1.51{+-}0.14 and 9.88{+-}2.85 MeV/c2 and life time of orders 10-16 - 10-15 s. The data and results obtained could explain and put conclusion to the puzzles which were going on during the last 50 years around the anomalous mean free path of {alpha}-particles produced during high energy particle collisions. The depression of average shower particle multiplicities produced in the collisions of secondary helium fragments as compared to those of primary helium at similar energy signs the possibility of formation of the neutral boson.

Authors:
 [1];  [2];  [3]
  1. Phys. Dpt. Faculty of Science, Helwan University, Helwan (Egypt)
  2. Phys. Dpt. Faculty of Science, Cairo University, Giza (Egypt)
  3. Reactor Phys. Dpt., Nucl. Research Center, Atomic Energy Authority (Egypt)
Publication Date:
OSTI Identifier:
21054901
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 888; Journal Issue: 1; Conference: MTPR-06: 2. international conference on modern trends in physics research, Cairo (Egypt), 6-11 Apr 2006; Other Information: DOI: 10.1063/1.2711118; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ALPHA PARTICLES; BERYLLIUM 8; BOSONS; CARBON 12; DE-EXCITATION; ELECTRON PAIRS; ELECTRONS; GEV RANGE; HELIUM 4; MEAN FREE PATH; MEV RANGE; MULTIPLICITY; NUCLEAR EMULSIONS; NUCLEAR FRAGMENTATION; NUCLEAR FRAGMENTS; PAIR PRODUCTION; SULFUR 32; SULFUR 32 REACTIONS

Citation Formats

El-Nagdy, M. S., Abdelsalam, A., and Badawy, B. M. Origin Of The Light Neutral Boson Observed In Heavy Ion Collisions. United States: N. p., 2007. Web. doi:10.1063/1.2711118.
El-Nagdy, M. S., Abdelsalam, A., & Badawy, B. M. Origin Of The Light Neutral Boson Observed In Heavy Ion Collisions. United States. doi:10.1063/1.2711118.
El-Nagdy, M. S., Abdelsalam, A., and Badawy, B. M. Wed . "Origin Of The Light Neutral Boson Observed In Heavy Ion Collisions". United States. doi:10.1063/1.2711118.
@article{osti_21054901,
title = {Origin Of The Light Neutral Boson Observed In Heavy Ion Collisions},
author = {El-Nagdy, M. S. and Abdelsalam, A. and Badawy, B. M.},
abstractNote = {We report the results of (e+ e- pairs) produced during the interactions of 200A GeV 32S with emulsion nuclei. The results for the electron pairs suggest that they originate from light neutral bosons emitted during the collision. The origin of such neutral bosons could be due to de-excitation of the produced fragments 4He, 8Be and 12C resulting in 32S fragmentation. The masses of the neutral bosons were estimated from electron kinematics and found to be equal 1.51{+-}0.14 and 9.88{+-}2.85 MeV/c2 and life time of orders 10-16 - 10-15 s. The data and results obtained could explain and put conclusion to the puzzles which were going on during the last 50 years around the anomalous mean free path of {alpha}-particles produced during high energy particle collisions. The depression of average shower particle multiplicities produced in the collisions of secondary helium fragments as compared to those of primary helium at similar energy signs the possibility of formation of the neutral boson.},
doi = {10.1063/1.2711118},
journal = {AIP Conference Proceedings},
number = 1,
volume = 888,
place = {United States},
year = {Wed Feb 14 00:00:00 EST 2007},
month = {Wed Feb 14 00:00:00 EST 2007}
}