Stau-catalyzed big-bang nucleosynthesis reactions

Masayasu Kamimura, Yasushi Kino, Emiko Hiyama

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)

Abstract

We study the new type of big-bang nucleosynthesis (BBN) reactions that are catalyzed by a hypothetical long-lived negatively charged, massive leptonic particle (called X-) such as the supersymmetric(SUSY) particle stau, the scalar partner of the tau lepton. It is known that if the X- particle has a lifetime of τX ≳ 103 s, it can capture a light element previously synthesized in standard BBN and form a Coulombic bound state and induces various types of reactions in which X - acts as a catalyst. Some of these X- -catalyzed reactions have significantly large cross sections so that the inclusion of there actions into the BBN network calculation can markedly change the abundances of some elements. We use a high-accuracy three-body calculation method developed by the authors and provide precise cross sections and rates of these catalyzed BBN reactions for use in the BBN network calculation.

Original languageEnglish
Title of host publicationTours Symposium on Nuclear Physics and Astrophysics - VII
Pages139-144
Number of pages6
Volume1238
DOIs
Publication statusPublished - Jul 20 2010
Externally publishedYes
Event7th Tours Symposium on Nuclear Physics and Astrophysics - Kobe, Japan
Duration: Nov 16 2009Nov 20 2009

Other

Other7th Tours Symposium on Nuclear Physics and Astrophysics
CountryJapan
CityKobe
Period11/16/0911/20/09

Fingerprint

nuclear fusion
light elements
cross sections
leptons
inclusions
scalars
catalysts
life (durability)

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Kamimura, M., Kino, Y., & Hiyama, E. (2010). Stau-catalyzed big-bang nucleosynthesis reactions. In Tours Symposium on Nuclear Physics and Astrophysics - VII (Vol. 1238, pp. 139-144) https://doi.org/10.1063/1.3455917

Stau-catalyzed big-bang nucleosynthesis reactions. / Kamimura, Masayasu; Kino, Yasushi; Hiyama, Emiko.

Tours Symposium on Nuclear Physics and Astrophysics - VII. Vol. 1238 2010. p. 139-144.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kamimura, M, Kino, Y & Hiyama, E 2010, Stau-catalyzed big-bang nucleosynthesis reactions. in Tours Symposium on Nuclear Physics and Astrophysics - VII. vol. 1238, pp. 139-144, 7th Tours Symposium on Nuclear Physics and Astrophysics, Kobe, Japan, 11/16/09. https://doi.org/10.1063/1.3455917
Kamimura M, Kino Y, Hiyama E. Stau-catalyzed big-bang nucleosynthesis reactions. In Tours Symposium on Nuclear Physics and Astrophysics - VII. Vol. 1238. 2010. p. 139-144 https://doi.org/10.1063/1.3455917
Kamimura, Masayasu ; Kino, Yasushi ; Hiyama, Emiko. / Stau-catalyzed big-bang nucleosynthesis reactions. Tours Symposium on Nuclear Physics and Astrophysics - VII. Vol. 1238 2010. pp. 139-144
@inproceedings{19f607aa98844a2abbce1f0262967322,
title = "Stau-catalyzed big-bang nucleosynthesis reactions",
abstract = "We study the new type of big-bang nucleosynthesis (BBN) reactions that are catalyzed by a hypothetical long-lived negatively charged, massive leptonic particle (called X-) such as the supersymmetric(SUSY) particle stau, the scalar partner of the tau lepton. It is known that if the X- particle has a lifetime of τX ≳ 103 s, it can capture a light element previously synthesized in standard BBN and form a Coulombic bound state and induces various types of reactions in which X - acts as a catalyst. Some of these X- -catalyzed reactions have significantly large cross sections so that the inclusion of there actions into the BBN network calculation can markedly change the abundances of some elements. We use a high-accuracy three-body calculation method developed by the authors and provide precise cross sections and rates of these catalyzed BBN reactions for use in the BBN network calculation.",
author = "Masayasu Kamimura and Yasushi Kino and Emiko Hiyama",
year = "2010",
month = "7",
day = "20",
doi = "10.1063/1.3455917",
language = "English",
isbn = "9780735407848",
volume = "1238",
pages = "139--144",
booktitle = "Tours Symposium on Nuclear Physics and Astrophysics - VII",

}

TY - GEN

T1 - Stau-catalyzed big-bang nucleosynthesis reactions

AU - Kamimura, Masayasu

AU - Kino, Yasushi

AU - Hiyama, Emiko

PY - 2010/7/20

Y1 - 2010/7/20

N2 - We study the new type of big-bang nucleosynthesis (BBN) reactions that are catalyzed by a hypothetical long-lived negatively charged, massive leptonic particle (called X-) such as the supersymmetric(SUSY) particle stau, the scalar partner of the tau lepton. It is known that if the X- particle has a lifetime of τX ≳ 103 s, it can capture a light element previously synthesized in standard BBN and form a Coulombic bound state and induces various types of reactions in which X - acts as a catalyst. Some of these X- -catalyzed reactions have significantly large cross sections so that the inclusion of there actions into the BBN network calculation can markedly change the abundances of some elements. We use a high-accuracy three-body calculation method developed by the authors and provide precise cross sections and rates of these catalyzed BBN reactions for use in the BBN network calculation.

AB - We study the new type of big-bang nucleosynthesis (BBN) reactions that are catalyzed by a hypothetical long-lived negatively charged, massive leptonic particle (called X-) such as the supersymmetric(SUSY) particle stau, the scalar partner of the tau lepton. It is known that if the X- particle has a lifetime of τX ≳ 103 s, it can capture a light element previously synthesized in standard BBN and form a Coulombic bound state and induces various types of reactions in which X - acts as a catalyst. Some of these X- -catalyzed reactions have significantly large cross sections so that the inclusion of there actions into the BBN network calculation can markedly change the abundances of some elements. We use a high-accuracy three-body calculation method developed by the authors and provide precise cross sections and rates of these catalyzed BBN reactions for use in the BBN network calculation.

UR - http://www.scopus.com/inward/record.url?scp=77954579814&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77954579814&partnerID=8YFLogxK

U2 - 10.1063/1.3455917

DO - 10.1063/1.3455917

M3 - Conference contribution

AN - SCOPUS:77954579814

SN - 9780735407848

VL - 1238

SP - 139

EP - 144

BT - Tours Symposium on Nuclear Physics and Astrophysics - VII

ER -