Journal Article

PUBDB-2016-00412

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Effects of Heavy Sea Quarks at Low Energies

Bruno, M.DESY* ; Finkenrath, J. ; Knechtli, F. ; Leder, B. ; Sommer, R.DESY* ; ALPHA Collaboration (Collaboration author)

2015
APS College Park, Md.

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Please use a persistent id in citations: doi:10.1103/PhysRevLett.114.102001

Report No.: DESY 14-190; SFB-CPP-14-78; WUP-14-11; arXiv:1410.8374

Abstract: We present a factorization formula for the dependence of light hadron masses and low energy hadronic scales on the mass M of a heavy quark: apart from an overall mass-independent factor Q, ratios such as r$_0$(M)/r$_0$(0) are computable in perturbation theory at large M. The perturbation theory part is stable concerning different loop orders. Our nonperturbative Monte Carlo results obtained in a model calculation, where a doublet of heavy quarks is decoupled, match quantitatively to the perturbative prediction. Upon taking ratios of different hadronic scales at the same mass, the perturbative function drops out and the ratios are given by the decoupled theory up to M$^{−2}$ corrections. We verify—in the continuum limit—that the sea quark effects of quarks with masses around the charm mass are very small in such ratios.

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Contributing Institute(s):

1. NIC (ZEU-NIC)

Research Program(s):

1. 514 - Theoretical Particle Physics (POF2-514) (POF2-514)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2015

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Database coverage:
; ; ; Current Contents - Physical, Chemical and Earth Sciences ; IF >= 5 ; JCR ; NCBI Molecular Biology Database ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Preprint/Internal Report Bruno, M. (Corresponding Author)DESY* ; Finkenrath, J. ; Knechtli, F. ; Leder, B. ; Sommer, R.DESY* ; ALPHA Collaboration (Collaboration author)
On the Effects of Heavy Sea Quarks at Low Energies
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