Improved precision on the experimental E0 decay branching ratio of the Hoyle state

Tomas Eriksen; Tibor Kibedi; Matthew Reed; Andrew Stuchbery; Kimberley Cook; Aqeel Akber; Badriah Alshahrani; Abraham A. Avaa; Kaushik Banerjee; Annette Berriman; Lauren Bezzina; Lindsey Bignell; Jacob Buete; Ian Carter; Ben Coombes; Jackson Dowie; Mahananda Dasgupta; L. J. Evitts; B.A. Garnsworthy; Matthew Gerathy; Timothy Gray; David Hinde; T H Hoang; Sankha Hota; E Ideguchi; P. Jones; Gregory Lane; Brendan McCormick; AJ Mitchell; Nyaladzi Palalani; Thomas Palazzo; Michaela Ripper; Ed Simpson; J. Smallcombe; Ben Swinton-Bland; Taiki Tanaka; Tamas Gabor Tornyi; Mitchell de Vries

doi:10.1103/PhysRevC.102.024320

Improved precision on the experimental E0 decay branching ratio of the Hoyle state

Tomas Eriksen, Tibor Kibedi, Matthew Reed, Andrew Stuchbery, Kimberley Cook, Aqeel Akber, Badriah Alshahrani, Abraham A. Avaa, Kaushik Banerjee, Annette Berriman, Lauren Bezzina, Lindsey Bignell, Jacob Buete, Ian Carter, Ben Coombes, Jackson Dowie, Mahananda Dasgupta, L. J. Evitts, B.A. Garnsworthy, Matthew GerathyTimothy Gray, David Hinde, T H Hoang, Sankha Hota, E Ideguchi, P. Jones, Gregory Lane, Brendan McCormick, AJ Mitchell, Nyaladzi Palalani, Thomas Palazzo, Michaela Ripper, Ed Simpson, J. Smallcombe, Ben Swinton-Bland, Taiki Tanaka, Tamas Gabor Tornyi, Mitchell de Vries

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Abstract

Background: Stellar carbon synthesis occurs exclusively via the 3α process, in which three α particles fuse to form 12C in the excited Hoyle state, followed by electromagnetic decay to the ground state. The Hoyle state is above the α threshold, and the rate of stellar carbon production depends on the radiative width of this state. The radiative width cannot be measured directly, and must instead be deduced by combining three separately measured quantities. One of these quantities is the E0 decay branching ratio of the Hoyle state, and the current 10% uncertainty on the radiative width stems mainly from the uncertainty on this ratio. The rate of the 3α process is an important input parameter in astrophysical calculations on stellar evolution, and a high precision is imperative to constrain the possible outcomes of astrophysical models.

Original language	English
Pages (from-to)	1-11
Journal	Physical Review C: Nuclear Physics
Volume	102
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevC.102.024320
Publication status	Published - 2020

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Eriksen, T., Kibedi, T., Reed, M., Stuchbery, A., Cook, K., Akber, A., Alshahrani, B., Avaa, A. A., Banerjee, K., Berriman, A., Bezzina, L., Bignell, L., Buete, J., Carter, I., Coombes, B., Dowie, J., Dasgupta, M., Evitts, L. J., Garnsworthy, B. A., ... de Vries, M. (2020). Improved precision on the experimental E0 decay branching ratio of the Hoyle state. Physical Review C: Nuclear Physics, 102(2), 1-11. https://doi.org/10.1103/PhysRevC.102.024320

@article{332263b15f0b455898c39740c4cf901d,

title = "Improved precision on the experimental E0 decay branching ratio of the Hoyle state",

abstract = "Background: Stellar carbon synthesis occurs exclusively via the 3α process, in which three α particles fuse to form 12C in the excited Hoyle state, followed by electromagnetic decay to the ground state. The Hoyle state is above the α threshold, and the rate of stellar carbon production depends on the radiative width of this state. The radiative width cannot be measured directly, and must instead be deduced by combining three separately measured quantities. One of these quantities is the E0 decay branching ratio of the Hoyle state, and the current 10% uncertainty on the radiative width stems mainly from the uncertainty on this ratio. The rate of the 3α process is an important input parameter in astrophysical calculations on stellar evolution, and a high precision is imperative to constrain the possible outcomes of astrophysical models.",

author = "Tomas Eriksen and Tibor Kibedi and Matthew Reed and Andrew Stuchbery and Kimberley Cook and Aqeel Akber and Badriah Alshahrani and Avaa, {Abraham A.} and Kaushik Banerjee and Annette Berriman and Lauren Bezzina and Lindsey Bignell and Jacob Buete and Ian Carter and Ben Coombes and Jackson Dowie and Mahananda Dasgupta and Evitts, {L. J.} and B.A. Garnsworthy and Matthew Gerathy and Timothy Gray and David Hinde and Hoang, {T H} and Sankha Hota and E Ideguchi and P. Jones and Gregory Lane and Brendan McCormick and AJ Mitchell and Nyaladzi Palalani and Thomas Palazzo and Michaela Ripper and Ed Simpson and J. Smallcombe and Ben Swinton-Bland and Taiki Tanaka and {Gabor Tornyi}, Tamas and {de Vries}, Mitchell",

year = "2020",

doi = "10.1103/PhysRevC.102.024320",

language = "English",

volume = "102",

pages = "1--11",

journal = "Physical Review C: Nuclear Physics",

number = "2",

}

Eriksen, T, Kibedi, T, Reed, M, Stuchbery, A, Cook, K, Akber, A, Alshahrani, B, Avaa, AA, Banerjee, K, Berriman, A, Bezzina, L, Bignell, L, Buete, J, Carter, I, Coombes, B, Dowie, J, Dasgupta, M, Evitts, LJ, Garnsworthy, BA, Gerathy, M, Gray, T, Hinde, D, Hoang, TH, Hota, S, Ideguchi, E, Jones, P, Lane, G, McCormick, B, Mitchell, AJ, Palalani, N, Palazzo, T, Ripper, M, Simpson, E, Smallcombe, J, Swinton-Bland, B, Tanaka, T, Gabor Tornyi, T & de Vries, M 2020, 'Improved precision on the experimental E0 decay branching ratio of the Hoyle state', Physical Review C: Nuclear Physics, vol. 102, no. 2, pp. 1-11. https://doi.org/10.1103/PhysRevC.102.024320

TY - JOUR

T1 - Improved precision on the experimental E0 decay branching ratio of the Hoyle state

AU - Eriksen, Tomas

AU - Kibedi, Tibor

AU - Reed, Matthew

AU - Stuchbery, Andrew

AU - Cook, Kimberley

AU - Akber, Aqeel

AU - Alshahrani, Badriah

AU - Avaa, Abraham A.

AU - Banerjee, Kaushik

AU - Berriman, Annette

AU - Bezzina, Lauren

AU - Bignell, Lindsey

AU - Buete, Jacob

AU - Carter, Ian

AU - Coombes, Ben

AU - Dowie, Jackson

AU - Dasgupta, Mahananda

AU - Evitts, L. J.

AU - Garnsworthy, B.A.

AU - Gerathy, Matthew

AU - Gray, Timothy

AU - Hinde, David

AU - Hoang, T H

AU - Hota, Sankha

AU - Ideguchi, E

AU - Jones, P.

AU - Lane, Gregory

AU - McCormick, Brendan

AU - Mitchell, AJ

AU - Palalani, Nyaladzi

AU - Palazzo, Thomas

AU - Ripper, Michaela

AU - Simpson, Ed

AU - Smallcombe, J.

AU - Swinton-Bland, Ben

AU - Tanaka, Taiki

AU - Gabor Tornyi, Tamas

AU - de Vries, Mitchell

PY - 2020

Y1 - 2020

N2 - Background: Stellar carbon synthesis occurs exclusively via the 3α process, in which three α particles fuse to form 12C in the excited Hoyle state, followed by electromagnetic decay to the ground state. The Hoyle state is above the α threshold, and the rate of stellar carbon production depends on the radiative width of this state. The radiative width cannot be measured directly, and must instead be deduced by combining three separately measured quantities. One of these quantities is the E0 decay branching ratio of the Hoyle state, and the current 10% uncertainty on the radiative width stems mainly from the uncertainty on this ratio. The rate of the 3α process is an important input parameter in astrophysical calculations on stellar evolution, and a high precision is imperative to constrain the possible outcomes of astrophysical models.

AB - Background: Stellar carbon synthesis occurs exclusively via the 3α process, in which three α particles fuse to form 12C in the excited Hoyle state, followed by electromagnetic decay to the ground state. The Hoyle state is above the α threshold, and the rate of stellar carbon production depends on the radiative width of this state. The radiative width cannot be measured directly, and must instead be deduced by combining three separately measured quantities. One of these quantities is the E0 decay branching ratio of the Hoyle state, and the current 10% uncertainty on the radiative width stems mainly from the uncertainty on this ratio. The rate of the 3α process is an important input parameter in astrophysical calculations on stellar evolution, and a high precision is imperative to constrain the possible outcomes of astrophysical models.

U2 - 10.1103/PhysRevC.102.024320

DO - 10.1103/PhysRevC.102.024320

M3 - Article

VL - 102

SP - 1

EP - 11

JO - Physical Review C: Nuclear Physics

JF - Physical Review C: Nuclear Physics

IS - 2

ER -

Improved precision on the experimental E0 decay branching ratio of the Hoyle state

Abstract

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