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Hoyle state; 𝛼 decay; Dalitz plot; kinematically complete measurement; inelastic scattering.

The prediction of Hoyle state was necessitated to explain the abundance of carbon, which is crucial for the existence of life on Earth and is the stepping stone for understanding the abundance of other heavier elements. After the experimental confirmation of its existence, soon it was realized that the Hoyle state was `different’ from other excited states of carbon, which led to intense theoretical and experimental activities over the past few decades to understand its structure. In recent times, precision, high statistics experiments on the decay of Hoyle state have been performed at the Variable Energy Cyclotron Centre, to determine the quantitative contributions of various direct $3\alpha$ decay mechanisms of the Hoyle state. The present results have been critically compared with those obtained in other recent experiments and their implications have been discussed.

S Bhattacharya¹ T K Rana¹ C Bhattacharya¹ S Kundu¹ K Banerjee¹ T K Ghosh¹ G Mukherjee¹ R Pandey¹ P Roy¹

1. Variable Energy Cyclotron Centre, 1/AF Bidhan Nagar, Kolkata 700 064, India

Published

November 2014

Early published

2 November 2014