Back to Search
Start Over
Two-loop master integrals for pseudo-scalar quarkonium and leptonium production and decay.
- Source :
-
Journal of High Energy Physics . Sep2022, Vol. 2022 Issue 9, p1-40. 40p. - Publication Year :
- 2022
-
Abstract
- We compute the master integrals relevant for the two-loop corrections to pseudo-scalar quarkonium and leptonium production and decay. We present both analytic and high-precision numerical results. The analytic expressions are given in terms of multiple polylogarithms (MPLs), elliptic multiple polylogarithms (eMPLs) and iterated integrals of Eisenstein series. As an application of our results, we obtain for the first time an analytic expression for the two-loop amplitude for para-positronium decay to two photons at two loops. [ABSTRACT FROM AUTHOR]
- Subjects :
- *ITERATED integrals
*INTEGRALS
*SCATTERING amplitude (Physics)
*PHOTONS
Subjects
Details
- Language :
- English
- ISSN :
- 11266708
- Volume :
- 2022
- Issue :
- 9
- Database :
- Academic Search Index
- Journal :
- Journal of High Energy Physics
- Publication Type :
- Academic Journal
- Accession number :
- 159721330
- Full Text :
- https://doi.org/10.1007/JHEP09(2022)194