Disconnected contributions to D-meson semi-leptonic decay form factors
G. S. Bali, S. Collins, R. Horsley, I. Kanamori, Y. Nakamura, D., Pleiter, P. P\'erez-Rubio, P. E. L. Rakow, A. Sch\"afer, G. Schierholz, F., Winter, J. M. Zanotti (QCDSF Collaboration)
TL;DR
This paper computes the disconnected contributions to D-meson semileptonic decay form factors involving a flavor singlet eta meson, using lattice QCD techniques with noise reduction methods.
Contribution
It presents the first calculation of disconnected contributions to D-meson decay form factors with specific lattice QCD setups and noise reduction techniques.
Findings
Disconnected contributions are significant for the decay form factors.
Effective noise reduction techniques improve stochastic estimation accuracy.
Results provide insights into flavor singlet effects in charm decays.
Abstract
We calculate the disconnected contribution to the form factor for the semileptonic decay of a D-meson into a final state, containing a flavor singlet eta meson. We use QCDSF n_f=2+1 configurations at the flavor symmetric point m_u=m_d=m_s and the partially quenched approximation for the relativistic charm quark. Several acceleration and noise reduction techniques for the stochastic estimation of the disconnected loop are tested.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsParticle physics theoretical and experimental studies · Quantum Chromodynamics and Particle Interactions · High-Energy Particle Collisions Research