Origin Of The Light Neutral Boson Observed In Heavy Ion Collisions

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...

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Bibliographic Details
Main Authors: El-Nagdy, M. S., Abdelsalam, A., Badawy, B. M.
Format: Conference Proceeding
Language:English
Subjects:
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
NUCLEAR PHYSICS AND RADIATION PHYSICS
PAIR PRODUCTION
SULFUR 32
SULFUR 32 REACTIONS
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Summary: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.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.2711118