Journal Article

PUBDB-2021-05682

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png How to discover QCD Instantons at the LHC

Amoroso, S. (Corresponding author)DESY* ; Kar, D. ; Schott, M.

2021
Springer Heidelberg

This record in other databases:        

Please use a persistent id in citations: doi:10.1140/epjc/s10052-021-09412-1  doi:10.3204/PUBDB-2021-05682

Report No.: arXiv:2012.09120

Abstract: The Standard Model of particle physics predicts the existence of quantum tunnelling processes across topological inequivalent vacua, commonly known as Instantons. In Quantum Chromodynamics, these Instantons play a fundamental role in explaining much of the theory long-distance behaviour. However, they have not yet been observed experimentally. Their direct observation would mark a breakthrough in modern particle physics, shedding light on our fundamental understanding of the non perturbative dynamics in the Standard Model. Recently, new calculations for QCD Instanton processes in proton–proton collisions became public, suggesting sizeable cross sections as well as possible experimental signatures at the LHC. In this work, we explore possible analysis strategies for the LHC experiments to discover small-size QCD Instanton induced processes. Moreover, we derive a first limit on the Instanton production cross section using published data of Minimum Bias processes at $\sqrt{s}=$13 TeV at the LHC.

Keyword(s): quantum chromodynamics: instanton ; symmetry breaking: chiral ; tunneling: quantum ; baryon: asymmetry ; p p: scattering ; CERN LHC Coll ; electroweak interaction ; vacuum state ; topological ; confinement ; signature

Note: Work prepared in the context of the CERN TH workshop 'Topological Effects in the Standard Model: Instantons, Sphalerons and Beyond at LHC'

---

Contributing Institute(s):

1. LHC/CMS Experiment (CMS)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF4-611) (POF4-611)

Experiment(s):

1. LHC: Other
2. No specific instrument

Appears in the scientific report 2021

---

Database coverage:
; ; ; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; DOAJ Seal ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; Nationallizenz ; SCOAP3 sponsored Journal ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

---