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Journals / Turkish Journal of Physics / 1998 / Cilt: 22 - Sayı: 12

Numerical calculation of energy loss rate for $e^+ + e^- to nu + bar{nu}$ process

Aytekin AYDEMİR
Pages
1103–1115
Publication Date
2022-11-05
DOI
—
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Both theories show that the region where the pair annihilation is effective is between C and Ne burnings.

📌 3 Key Takeaways

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Objective & Hypothesis:The energy loss rate for pair annihilation is calculated numerically in V-A (Fermi theory) and Weinberg-Salam (Standard theory) theories, taking into account also the variation of density at various temperatures using the results obtained in closed form by Chiu, and Schinder, et al.
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Key Findings & Data:Dicus has calculated energy loss rate for this process only for a few limiting cases since the integrals can not be taken analytically for all $lambda$ and $nu$.
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Conclusion & Impact:Both theories show that the region where the pair annihilation is effective is between C and Ne burnings.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

The energy loss rate for pair annihilation is calculated numerically in V-A (Fermi theory) and Weinberg-Salam (Standard theory) theories, taking into account also the variation of density at various temperatures using the results obtained in closed form by Chiu, and Schinder, et al. The calculations made by Chiu, and Salpeter, et al., are seen to be parallel to each other. Dicus has calculated energy loss rate for this process only for a few limiting cases since the integrals can not be taken analytically for all $lambda$ and $nu$. The graph drawn for the values we obtained is compared with the graph drawn by Hayashi, et al. The present study attempts to determine at what stage of stellar evolution the pair annihilation process is effective by examining the difference between the graphs obtained for V-A an WS theories. Both theories show that the region where the pair annihilation is effective is between C and Ne burnings.

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Cite This Article

AYDEMİR, A. (2022). Numerical calculation of energy loss rate for $e^+ + e^- to nu + bar{nu}$ process. Turkish Journal of Physics, Cilt: 22 - Sayı: 12, 1103–1115. https://ajindex.com/articles/614107

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References (1)

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