The tau lepton: Particle physics in a nutshell

Kühn, Johann H.

doi:10.1016/s0920-5632(99)00387-4

Nuclear Physics B - Proceedings Supplements

1999

DOI: 10.1016/s0920-5632(99)00387-4

|View full text |Cite

The tau lepton: Particle physics in a nutshell

Johann H. Kühn¹

Help me understand this report

View preprint versions

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2000

2023

Publication Types

Select...

Article5

Relationship

Self Cite1

Independent4

Authors

Journals

Cited by 7 publications

References 69 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Dispersion relations for hadronic light-by-light scattering in triangle kinematics

Lüdtke

Procura

Stoffer

2023

J. High Energ. Phys.

View full text Add to dashboard Cite

We present a new strategy for the dispersive evaluation of the hadronic light-by-light contribution to the anomalous magnetic moment of the muon aμ. The new approach directly applies in the kinematic limit relevant for aμ: one of the photons is treated as an external electromagnetic field with vanishing momentum, so that the kinematics corresponds to a triangle. We derive expressions for the relevant single-particle intermediate states, as well as the tensor decompositions of the two-pion sub-processes that appear in addition to those needed in the established dispersive approach. The existing approach is based on a set of dispersion relations for the hadronic light-by-light tensor in four-point kinematics. At present it is not known how to consistently include in this framework resonant intermediate states of spin 2 or larger, due to the appearance of kinematic singularities that can be traced back to the redundancy of the tensor decomposition. We show that our new approach circumvents this problem and enables dispersion relations in the limit of triangle kinematics that are manifestly free from kinematic singularities, paving the way towards a data-driven evaluation of all relevant exclusive hadronic intermediate states.

show abstract

Dispersion relations for hadronic light-by-light scattering in triangle kinematics

Lüdtke

Procura

Stoffer

2023

J. High Energ. Phys.

View full text Add to dashboard Cite

show abstract

Status of PHOKHARA and its theoretical accuracy

Czyż

2008

Nuclear Physics B - Proceedings Supplements

View full text Add to dashboard Cite

Status of PHOKHARA

Grzelińska

Czyż

Wapienik

2009

Nuclear Physics B - Proceedings Supplements

View full text Add to dashboard Cite

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

hi@scite.ai

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

The tau lepton: Particle physics in a nutshell

Cited by 7 publications

References 69 publications

Dispersion relations for hadronic light-by-light scattering in triangle kinematics

Dispersion relations for hadronic light-by-light scattering in triangle kinematics

Status of PHOKHARA and its theoretical accuracy

Status of PHOKHARA

Contact Info

Product

Resources

About