Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Relefors, Johan"'
Autor:
Bijnens, Johan, Relefors, Johan
We calculate vector-vector correlation functions at two loops using partially quenched chiral perturbation theory including finite volume effects and twisted boundary conditions. We present expressions for the flavor neutral cases and the flavor char
Externí odkaz:
http://arxiv.org/abs/1710.04479
The determination of $|V_{us}|$ from kaon semileptonic decays requires the value of the form factor $f_+(q^2=0)$ which can be calculated precisely on the lattice. We provide the one-loop partially quenched chiral perturbation theory expressions both
Externí odkaz:
http://arxiv.org/abs/1702.03416
Autor:
Momeni, Mahdi, Relefors, Johan, Khatry, Abubakar, Pettersson, Lars, Papadopoulos, Alessandro V., Nolte, Thomas
Publikováno v:
In Automation in Construction January 2022 133
Autor:
Bijnens, Johan, Relefors, Johan
In this talk we discuss a number of ChPT calculations relevant for lattice QCD. These include the finite volume corrections at two-loop order for masses and decay constants. The second part is about hadronic vacuum polarization where we present the t
Externí odkaz:
http://arxiv.org/abs/1611.06068
Autor:
Bijnens, Johan, Relefors, Johan
We calculate all neutral vector two-point functions in Chiral Perturbation Theory (ChPT) to two-loop order and use these to estimate the ratio of disconnected to connected contributions as well as contributions involving the strange quark. We extend
Externí odkaz:
http://arxiv.org/abs/1609.01573
Autor:
Bijnens, Johan, Relefors, Johan
This paper contains some new results on the hadronic light-by-light contribution (HLbL) to the muon $g-2$. The first part argues that we can expect large effects from disconnected diagrams in present and future calculations by lattice QCD of HLbL. Th
Externí odkaz:
http://arxiv.org/abs/1608.01454
Autor:
Bijnens, Johan, Relefors, Johan
We discuss some of the effects of twisted boundary conditions in finite volume using continuum SU(3) Chiral Perturbation Theory. We point out how broken cubic symmetry affects the definitions of quantities such as form-factors. Using the $\pi^+$ as a
Externí odkaz:
http://arxiv.org/abs/1509.07295
Autor:
Bijnens, Johan, Relefors, Johan
Using Chiral Perturbation Theory at one-loop we analyze the consequences of twisted boundary conditions. We point out that due to the broken Lorentz and reflection symmetry a number of unexpected terms show up in the expressions. We explicitly discus
Externí odkaz:
http://arxiv.org/abs/1402.1385
The precise determination of the masses of the neutral and charged heavy Higgs bosons is a crucial input for the study of Supersymmetry and its relation with cosmology through dark matter. This paper presents a study of e+e- -> HA and H+H- production
Externí odkaz:
http://arxiv.org/abs/1203.0668
Autor:
Relefors, Johan
In this thesis we use effective field thory methods and models for low energy QCD in two different contexts. One is direct calculation of contributions to the anomalous magnetic moment of the muon, muon g-2. The other is estimates of systematic sourc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______1110::1035664e845ac1f4f526f7351db50be3
https://lup.lub.lu.se/record/10e5c6f7-6f5c-47dc-b74a-e6b931aef43c
https://lup.lub.lu.se/record/10e5c6f7-6f5c-47dc-b74a-e6b931aef43c