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Big-bang nucleosynthesis with a long-lived charged massive particle including $^4$He spallation processes
High Energy Physics - Phenomenology · Submitted 7 May 2011
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim We show that, as long as the phase space of helium-4 spallation processes is open, they are more important than stau-catalyzed fusion and hence constrain the stau property.
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The abstract, sentence by sentence
We propose helium-4 spallation processes induced by long-lived stau in supersymmetric standard models, and investigate an impact of the processes on light elements abundances. We show that, as long as the phase space of helium-4 spallation processes is open, they are more important than stau-catalyzed fusion and hence constrain the stau property.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | We propose helium-4 spallation processes induced by long-lived stau in supersymmetric standard models, and investigate an impact of the processes on light elements abundances. | contribution 1.00 | 0.78 | 0.09 | asserted 0.65 |
| s1 | We show that, as long as the phase space of helium-4 spallation processes is open, they are more important than stau-catalyzed fusion and hence constrain the stau property. | result 0.76 | 0.91 | 0.81 | asserted 1.00 |
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The paper
Original abstract
We propose helium-4 spallation processes induced by long-lived stau in supersymmetric standard models, and investigate an impact of the processes on light elements abundances. We show that, as long as the phase space of helium-4 spallation processes is open, they are more important than stau-catalyzed fusion and hence constrain the stau property.
Human review
How the literature uses it
12 arXiv papers cite this in 29 sentences
Papers whose main result relates to this one's
States the same result 1 paper
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We show that, as long as the phase space of helium-4 spallation processes is open, they are more important than stau-catalyzed fusion and hence constrain the stau property.
Big-bang nucleosynthesis with a long-lived CHAMP including He4 spallation process · 1.00
Papers citing it · 22 sentences without a confident label
Uses its method or tool 1 paper
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The formulation and explicit formulae of the wave functions are given in Appendix A in Ref. [ref] .
A Solution to Lithium Problem by Long-Lived Stau · Spallation reactions and stau catalyzed fusion · 0.92
Uses its data or values 2 papers
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The standard calculation predicts the ratio of abundance $Log_10(^7Li/H)$ to be $-9.35±0.06$ [ref] , while the observation indicates $-9.63 ±0.06$ [ref] .
Big-bang nucleosynthesis through bound-state effects with a long-lived slepton in the NMSSM · Introduction · 0.87
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The $^7$Li problem is a discrepancy between the observed abundance of $^7$Li, e.g., $Log_10(^7Li/H) = -9.63 ±0.06$ [ref] , and a theoretical one predicted in the standard BBN, $Log_10(^7Li/H) = -9.35 ±0.06$ [ref] .
Allowed slepton intergenerational mixing in light of light element abundances · Introduction · 0.98
Compares with it 1 paper
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Indeed, the results at BL-1, BL-2, and BL-3 are almost same as the result in the MSSM, Fig. 3 in Ref. [ref] , where the same values for $c_e, m_χ̃^0_1, sinθ_f$ and CP-violating phase are used.
Big-bang nucleosynthesis through bound-state effects with a long-lived slepton in the NMSSM · BBN results at the benchmark points · 1.00
Cites it as support 1 paper
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With this mass difference, the stau NLSP is sufficiently long-lived so that it can survive until the BBN era [ref] .
A first evidence of the CMSSM is appearing soon · Constraints · 0.98
Cites it as background 2 papers
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The last one is the $^4$He spallation processes [ref] :
Big-bang nucleosynthesis through bound-state effects with a long-lived slepton in the NMSSM · Exotic BBN reactions · 0.81
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And indeed, there have been some new physics mechanisms explored—mainly fundamental constants varying to modify early-universe nuclear rates [ref] or decaying dark matter disrupting reactions [ref] .
Cosmological Lithium Solution from Discrete Gauged Baryon Minus Lepton Number · The Lithium Problem · 0.99
What it cites · 23 sentences without a confident label
Uses data or values from 7 papers
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SBBN predicts the $^7$Li to H ratio to be $Log_10(^7Li/H) = -9.35 ±0.06$ when we adopt a recent value of baryon to photon ratio $η= (6.225 ±0.170) ×10^-10$ (68% C.L.) reported by the WMAP satellite [ref] , and experimental data of the rate for the $^7$Li or $^7$Be production through $^3$He + $^4$He $→ ^7$Be + $γ$ [ref] ($^7$Li is produced from $^7$Be by its electron capture, $^7$Be + $e^-$ $→$ $^7$Li + $ν_e$ at a later epoch).
Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation · Light elements abundances and allowed parameter space · 1.00
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SBBN predicts the $^7$Li to H ratio to be $Log_10(^7Li/H) = -9.35 ±0.06$ when we adopt a recent value of baryon to photon ratio $η= (6.225 ±0.170) ×10^-10$ (68% C.L.) reported by the WMAP satellite [ref] , and experimental data of the rate for the $^7$Li or $^7$Be production through $^3$He + $^4$He $→ ^7$Be + $γ$ [ref] ($^7$Li is produced from $^7$Be by its electron capture, $^7$Be + $e^-$ $→$ $^7$Li + $ν_e$ at a later epoch).
A Bitter Pill: The Primordial Lithium Problem Worsens · Light elements abundances and allowed parameter space · 1.00
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We have adopted following another observational constraints on the light element abundances: an upper bound on the $^6$Li to $^7$Li ratio, $^6$Li/$^7$Li $< 0.046 + 0.022$ [ref] , the deuteron to hydrogen ratio, D/H=$(2.80 ±0.20) ×10^-5$ [ref] , and an upper bound on the $^3$He to deuteron ratio, $^3$He/D $< 0.87 + 0.27$ [ref] .
Deuterium Abundance in the Most Metal-Poor Damped Lyman alpha System: Converging on Omega_baryons · Light elements abundances and allowed parameter space · 1.00
Cites as background 46 papers
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The light nuclei will interact not only with the CHAMPs during the BBN processes [ref] , but also with the decay products of the CHAMPs in the post-BBN era [ref] .
Big-Bang Nucleosynthesis and Hadronic Decay of Long-Lived Massive Particles · Introduction · 0.85
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The light nuclei will interact not only with the CHAMPs during the BBN processes [ref] , but also with the decay products of the CHAMPs in the post-BBN era [ref] .
Implications of Catalyzed BBN in the CMSSM with Gravitino Dark Matter · Introduction · 0.85
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The light nuclei will interact not only with the CHAMPs during the BBN processes [ref] , but also with the decay products of the CHAMPs in the post-BBN era [ref] .
Did Something Decay, Evaporate, or Annihilate during Big Bang Nucleosynthesis? · Introduction · 0.85
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