TY - JOUR AU - Amoroso, Simone AU - Kar, Deepak AU - Schott, Matthias TI - How to discover QCD Instantons at the LHC JO - The European physical journal / C VL - 81 IS - 7 SN - 1434-6044 CY - Heidelberg PB - Springer M1 - PUBDB-2021-05682 M1 - arXiv:2012.09120 SP - 624 PY - 2021 N1 - Work prepared in the context of the CERN TH workshop 'Topological Effects in the Standard Model: Instantons, Sphalerons and Beyond at LHC' AB - 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 √s=13 TeV at the LHC. T2 - Topological Effects in the Standard Model: Instantons, Sphalerons and Beyond at LHC CY - 16 Dec 2020 - 18 Dec 2020, Geneva (Switzerland) Y2 - 16 Dec 2020 - 18 Dec 2020 M2 - Geneva, Switzerland KW - quantum chromodynamics: instanton (INSPIRE) KW - symmetry breaking: chiral (INSPIRE) KW - tunneling: quantum (INSPIRE) KW - baryon: asymmetry (INSPIRE) KW - p p: scattering (INSPIRE) KW - CERN LHC Coll (INSPIRE) KW - electroweak interaction (INSPIRE) KW - vacuum state (INSPIRE) KW - topological (INSPIRE) KW - confinement (INSPIRE) KW - signature (INSPIRE) LB - PUB:(DE-HGF)16 UR - <Go to ISI:>//WOS:000680865100003 DO - DOI:10.1140/epjc/s10052-021-09412-1 UR - https://bib-pubdb1.desy.de/record/473357 ER -