التفاصيل البيبلوغرافية
| العنوان: |
Bounds on scattering of neutral Goldstones. |
| المؤلفون: |
Acanfora, Francesca, Guerrieri, Andrea, Häring, Kelian, Karateev, Denis |
| المصدر: |
Journal of High Energy Physics; Mar2024, Vol. 2024 Issue 3, p1-45, 45p |
| مصطلحات موضوعية: |
SCATTERING amplitude (Physics), NAMBU-Goldstone bosons, SPACETIME |
| مستخلص: |
We study the space of 2 → 2 scattering amplitudes of neutral Goldstone bosons in four space-time dimensions. We establish universal bounds on the first two non-universal Wilson coefficients of the low energy Effective Field Theory (EFT) for such particles. We reconstruct the analytic, crossing-symmetric, and unitary amplitudes saturating our bounds, and we study their physical content. We uncover non-perturbative Regge trajectories by continuing our numerical amplitudes to complex spins. We then explore the consequence of additional constraints arising when we impose the knowledge about the EFT up to the cut-off scale. In the process, we improve on some aspects of the numerical S-matrix bootstrap technology for massless particles. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
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