Y P Viyogi has studied projectile fragmentation reactions involving intermediate energy of heavy nuclei at
Berkeley. He has been also involved in the study of
quark gluon plasma using indigenous
photon multiplicity detector (PMD) at
CERN in
Geneva and
Brookhaven National Laboratory in
USA. He led Indian group of
physicists at the
ALICE experiment in CERN. In July 1993, Y P Viyogi published an article on heavy ion collisions having title "Ultra - relativistic heavy ion experiments: a perspective" at
Pramana Journal of Physics. In 2011, he was the leader of Indian physicists in
STAR experiment at
Relativistic Heavy Ion Collider (RHIC) in
Brookhaven National Laboratory, USA. There he was involved in the observation and detection of the
antimatter helium-4 nucleus or anti-alpha. He is one of the physicists who witnessed the discovery of the heaviest anti-matter known as
anti-alpha particle. == References ==