Precision physics at the muon collider: mW and CKM matrix elements
4 affiliations
- 1Deutsches Elektronen-Synchrotron DESY
- 2Università degli Studi Roma Tre
- 3INFN, Sezione di Roma Tre
- 4CERN
Abstract
We examine the potential for a 10 TeV lepton collider to carry out precision measurements of the W boson mass and W boson couplings strength, i.e. the CKM matrix elements. We consider the several W boson production mechanisms and focus on the most copious at 10 TeV, that is effective γW → W, a process viable at both opposite sign and same-sign leptonic colliders. We find that the leptonic W decay channel can hardly be competitive with present determinations, due to lack of rate. The hadronic channel has potential to improve over the current ≃10 MeV from measurements at hadron colliders, motivating detector developments towards high-precision hadronic energy measurements. We find that the precision understanding of the detector response to hadrons can also lead to a determination of the CKM matrix elements. We expect determination of CKM matrix elements surpassing by far the present precision for couplings involving heavy quarks, notably Vcb, avoiding the present bottle-necks due to poor knowledge of hadronic matrix elements needed in low energy extractions of CKM matrix elements. Our findings motivate detector developments towards high-precision hadronic energy measurements and flavor tagging.
Related
- Prospects for precision Higgs boson measurements at a 10 TeV muon collider
- The muon collider: expected physics, technological challenges, and the prospects for reusing the 21 km UNK tunnel
- Input to the SCAC Facilities Subcommittee from the U.S. Muon Collider Collaboration
- FCC-μe: High Energy, High Luminosity Muon-Electron Collider & Neutrino Factory at CERN
- Vanilla Scotogenic Model at the future Muon Collider
BibTeX
@article{bella2026precision,
title = {{Precision physics at the muon collider: mW and CKM matrix elements}},
author = {Ludovica Aperio Bella and Roberto Franceschini and Federico Meloni and Xing Wang},
journal = {Journal of High Energy Physics},
year = {2026},
month = nov,
doi = {10.1007/jhep11(2026)011},
url = {https://link.springer.com/article/10.1007/JHEP11(2026)011},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Precision physics at the muon collider: mW and CKM matrix elements
AU - Ludovica Aperio Bella
AU - Roberto Franceschini
AU - Federico Meloni
AU - Xing Wang
PY - 2026
DA - 2026/11/02
JO - Journal of High Energy Physics
DO - 10.1007/jhep11(2026)011
UR - https://link.springer.com/article/10.1007/JHEP11(2026)011
AB - We examine the potential for a 10 TeV lepton collider to carry out precision measurements of the W boson mass and W boson couplings strength, i.e. the CKM matrix elements. We consider the several W boson production mechanisms and focus on the most copious at 10 TeV, that is effective γW → W, a process viable at both opposite sign and same-sign leptonic colliders. We find that the leptonic W decay channel can hardly be competitive with present determinations, due to lack of rate. The hadronic channel has potential to improve over the current ≃10 MeV from measurements at hadron colliders, motivating detector developments towards high-precision hadronic energy measurements. We find that the precision understanding of the detector response to hadrons can also lead to a determination of the CKM matrix elements. We expect determination of CKM matrix elements surpassing by far the present precision for couplings involving heavy quarks, notably Vcb, avoiding the present bottle-necks due to poor knowledge of hadronic matrix elements needed in low energy extractions of CKM matrix elements. Our findings motivate detector developments towards high-precision hadronic energy measurements and flavor tagging.
SN - 1029-8479
ER -