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High-energy fixed-angle meson scattering and the constituent counting rule in holographic QCD

Adi Armoni Orcid Logo, Bartosz Pyszkowski Orcid Logo, Shigeki Sugimoto Orcid Logo, Dorin Weissman Orcid Logo

Journal of High Energy Physics, Volume: 2025, Issue: 5, Start page: 221

Swansea University Author: Adi Armoni Orcid Logo

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DOI (Published version): 10.1007/jhep05(2025)221

Abstract

We investigate the high-energy fixed-angle scattering of pions and ρ-mesons in a bottom-up holographic QCD model. To this end, we generalise the approach of Polchinski and Strassler [1] to write an ansatz for meson scattering amplitudes based on superstring scattering amplitudes in asymptotically Ad...

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Published in: Journal of High Energy Physics
ISSN: 1029-8479
Published: Springer Nature 2025
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URI: https://cronfa.swan.ac.uk/Record/cronfa69635
Abstract: We investigate the high-energy fixed-angle scattering of pions and ρ-mesons in a bottom-up holographic QCD model. To this end, we generalise the approach of Polchinski and Strassler [1] to write an ansatz for meson scattering amplitudes based on superstring scattering amplitudes in asymptotically AdS space. We demonstrate that our generalisation of the Polchinski-Strassler proposal is necessary to describe ρ-meson scattering consistently with the Nambu-Goldstone boson equivalence theorem. Our results for pion and ρ-meson scattering amplitudes are in agreement with the constituent counting rule found in QCD. Moreover, our proposal for 2-to-2 scattering amplitudes provides a method for computing scattering angle dependence.
Keywords: AdS-CFT Correspondence, Gauge-Gravity Correspondence, Scattering Amplitudes
College: Faculty of Science and Engineering
Funders: AA was supported by STFC grant ST/T000813/1. BP was supported by JST SPRING, Grant Number JPMJSP2110. The work of SS was supported by the JSPS KAKENHI (Grant-in-Aid for Scientific Research (B)) grant number JP24K00628 and MEXT KAKENHI (Grant-in-Aid for Transformative Research Areas A “Extreme Universe”) grant number 21H05187. DW was supported by an appointment to the YST Program at the APCTP through the Science and Technology Promotion Fund and Lottery Fund of the Korean Government. This was also supported by the Korean Local Governments of Gyeongsangbukdo Province and Pohang City.
Issue: 5
Start Page: 221

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