Work

Direct CKM determination from W decays at future lepton colliders

Year: 2024

Type: article

Abstract: A bstract We project the reach of future lepton colliders for measuring CKM elements from direct observations of W decays. We focus our attention to | V cs | and | V cb | determinations, using FCC-ee as case study. We employ state-of-the-art jet flavor taggers to obtain the projected sensitivity, and scan over tagger performances to show their effect. We conclude that future lepton collider can sizeably improve the sensitivity on | V cs | and | V cb |, albeit the achievable reach will strongly depend on the level of systematic uncertainties on tagger parameters.

Source: Journal of High Energy Physics

DOI: 10.1007/jhep11(2024)017

Authors: David Marzocca, Manuel Szewc, Michele Tammaro

Institutions: Scuola Internazionale Superiore di Studi Avanzati, Istituto Nazionale di Fisica Nucleare, Sezione di Trieste, University of Cincinnati, Istituto Nazionale di Fisica Nucleare, Sezione di Firenze

Language: English

Topic: Particle physics theoretical and experimental studies

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: diamond

Funders: National Science Foundation, U.S. Department of Energy

Awards: Elements: Machine Learning Quark Hadronization, RESEARCH IN PARTICLE THEORY AND EXPERIMENT AT THE UNIVERSITY OF CINCINNATI