Zobrazeno 1 - 10
of 249 965
pro vyhledávání: '"FORM-FACTOR"'
Autor:
DeGrand, Thomas
I show comparisons of the pseudoscalar meson vector form factor from simulations of QCD with $N_c = 3$, 4 and 5 colors and $N_f = 2$ flavors of degenerate mass fermions at a common (matched) fermion mass, lattice spacing, and simulation volume. The d
Externí odkaz:
http://arxiv.org/abs/2412.14143
We accomplish for the first time the two-loop computation of the leading-twist contribution to the pion electromagnetic form factor by employing the effective field theory formalism rigorously. The next-to-next-to-leading-order short-distance matchin
Externí odkaz:
http://arxiv.org/abs/2411.03658
Autor:
Dixon, Lance J., Xin, Shuo
Recently, the maximally-helicity-violating four-point form factor for the chiral stress-energy tensor in planar $\mathcal{N}=4$ super Yang-Mills was computed to three loops at the level of the symbol associated with multiple polylogarithms. It exhibi
Externí odkaz:
http://arxiv.org/abs/2411.01571
We study the three-point form factor of the length-three half-BPS operator ($\textrm{Tr}\,\phi^3$) in planar $\mathcal{N}=4$ Super-Yang-Mills theory, using analyticity and integrability methods. We find that the functions describing the form factor i
Externí odkaz:
http://arxiv.org/abs/2410.22402
In this work, we employ a dispersion relation that allows to recover the electromagnetic form factor of the pion from its modulus along the unitarity cut. Unlike the standard dispersive approach, this method extends in a straightforward manner above
Externí odkaz:
http://arxiv.org/abs/2410.17804
We discuss a novel and simple parametrisation of the pion vector form factor that transparently connects spacelike and timelike regions of the momentum transfer $q^2$. Our parametrisation employs the framework of conformal mapping and respects the kn
Externí odkaz:
http://arxiv.org/abs/2410.13764
Autor:
Yamazaki, Takeshi, Ishikawa, Ken-ichi, Ishizuka, Naruhito, Kuramashi, Yoshinobu, Namekawa, Yusuke, Taniguchi, Yusuke, Collaboration, Naoya Ukita for PACS
We calculate the form factors for the kaon semileptonic decay process using the PACS10 configurations, whose physical volume is more than (10 fm)$^4$ very close to the physical point. The configurations were generated with the Iwasaki gauge action an
Externí odkaz:
http://arxiv.org/abs/2412.05778
We investigate the properties of the radially excited charged pion, with a specific focus on its electromagnetic form factor (EFF) and its box contribution to the hadronic light-by-light (HLbL) component of the muon's anomalous magnetic moment, $a_{\
Externí odkaz:
http://arxiv.org/abs/2411.02218
Pion-kaon ($\pi K$) final states, often appearing in heavy-particle decays at the precision frontier, are important for Standard-Model tests, to describe crossed channels with exotic states, and for spectroscopy of excited kaon resonances. We constru
Externí odkaz:
http://arxiv.org/abs/2410.21883
We consider systems of fermions evolved by non-interacting unitary circuits with correlated on-site potentials. When these potentials are drawn from the eigenvalue distribution of a circular random matrix ensemble, the spectral form factor (SFF) of t
Externí odkaz:
http://arxiv.org/abs/2410.07306