New measurement of the Hoyle state radiative transition width
The radiative decay of the Hoyle state serves as the gateway to the production of heavier elements in a stellar environment. Here, we present an exclusive measurement of electric quadruple (E2) transitions of the Hoyle state to the ground state of 12 C through the 12 C(p, p′ γγ ) 12 C reaction. A triple coincidence measurement yields the radiative branching ratio Γ r a d /Γ = 4.01 (30) × 10 −4 . This result was corroborated by an independent experiment based on the complete kinematical measurement via 12 C(p, p′) 12 C reaction, yielding a consistent result of Γ r a d /Γ = 4.04 (30) × 10 −4 . Combining our results with the currently adopted values of Γ π ( E 0 ) / Γ and Γ π ( E 0 ) , the radiative width of the Hoyle state is determined to be 3.75 (40) × 10 −3 eV. It is important to note that our finding do not align with a recently reported 34% increase in the radiative decay width of the Hoyle state but is consistent with the currently accepted value.
Authors
- K. Banerjee (ORCID: https://orcid.org/0000-0002-7731-8389)
- K. Atreya (ORCID: https://orcid.org/0000-0002-6314-2933)
- Deepak Pandit (ORCID: https://orcid.org/0000-0002-2640-6151)
- Sk M. Ali (ORCID: https://orcid.org/0000-0002-1018-5307)
- Tushar K. Ghosh (ORCID: https://orcid.org/0000-0002-8014-2513)
- P. Pant
- S. Manna (ORCID: https://orcid.org/0000-0001-8439-4577)
- Rajkumar Santra (ORCID: https://orcid.org/0009-0002-0373-570X)
- Riddhi Datta (ORCID: https://orcid.org/0000-0001-7490-190X)
- R. Pandey (ORCID: https://orcid.org/0000-0001-7984-5329)
- Goutam Mukherjee (ORCID: https://orcid.org/0000-0002-4620-2770)
- A. De (ORCID: https://orcid.org/0000-0002-7865-4202)
- Pratap Roy (ORCID: https://orcid.org/0000-0002-4838-4467)
- S. Mukhopadhyay (ORCID: https://orcid.org/0000-0003-0231-1526)
- D. Paul (ORCID: https://orcid.org/0000-0002-2158-9163)
- T. K. Rana (ORCID: https://orcid.org/0000-0001-7585-0753)
- Srijit Bhattacharya (ORCID: https://orcid.org/0000-0002-1513-1703)
- Shohini Bhattacharya (ORCID: https://orcid.org/0000-0001-8536-082X)
- R. Shil (ORCID: https://orcid.org/0000-0002-6623-4403)
- Subhendu Mondal (ORCID: https://orcid.org/0000-0003-0927-0421)
- S. S. Nayak (ORCID: https://orcid.org/0000-0001-5892-4829)
- C. Bhattacharya
- S. K. Basu (ORCID: https://orcid.org/0000-0001-5302-9155)
- Debasish Mondal (ORCID: https://orcid.org/0000-0003-3887-0522)
- Abeda Sultana (ORCID: https://orcid.org/0000-0003-4973-3507)
- Amit Sen (ORCID: https://orcid.org/0000-0002-0037-5465)
- S. Sadhukhan (ORCID: https://orcid.org/0000-0003-1857-7732)
- Balaram Dey (ORCID: https://orcid.org/0000-0002-9168-3219)
- Surajit Pal
- S. K. Pal (ORCID: https://orcid.org/0009-0008-8392-6218)
- Kavita Rani
- Samir Kundu (ORCID: https://orcid.org/0000-0001-8813-7084)
- P. Karmakar (ORCID: https://orcid.org/0000-0002-2269-3739)
Institutions
- Variable Energy Cyclotron Centre (IN)
- Visva-Bharati University (IN)
- Homi Bhabha National Institute (IN)
Publication Details
- Journal
- Physics Letters B
- Published
- 2024-10-18
- DOI
- https://doi.org/10.1016/j.physletb.2024.139083
- Citations
- 4
- Primary Topic
- Nuclear physics research studies
- Type
- article
- Field-Weighted Citation Impact
- 2.64