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High Energy Physics - Lattice

arXiv:1311.5071 (hep-lat)
[Submitted on 20 Nov 2013 (v1), last revised 9 Apr 2014 (this version, v2)]

Title:Lattice QCD study of $B_s\to D_s \ell \barν_\ell$ decay near zero recoil

Authors:Mariam Atoui, Damir Becirevic, Vincent Morénas, Francesco Sanfilippo
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Abstract:We study the hadronic matrix elements describing the $B_s \to D_s\ell \bar\nu_\ell$ decay in and beyond the Standard Model. By using the twisted mass QCD on the lattice with $N_f=2$ dynamical flavors we compute the normalization $\mathscr G_s(1)$ of the form factor dominating $B_s\to D_s \ell \bar\nu_\ell$ in the SM. We also make the first lattice determination of $F_0(q^2)/F_+(q^2)$ and $F_T(q^2)/F_+(q^2)$ near zero recoil (near $q^2_{\rm max}$). We briefly discuss the non-strange case $B \to D\ell \bar\nu_\ell$ as well.
Comments: presented at the 31st International Symposium on Lattice Field Theory (Lattice 2013), 29 July - 3 August 2013, Mainz, Germany
Subjects: High Energy Physics - Lattice (hep-lat); High Energy Physics - Experiment (hep-ex); High Energy Physics - Phenomenology (hep-ph)
Cite as: arXiv:1311.5071 [hep-lat]
  (or arXiv:1311.5071v2 [hep-lat] for this version)
  https://doi.org/10.48550/arXiv.1311.5071
Journal reference: PoS(LATTICE 2013)384

Submission history

From: Mariam Atoui [view email]
[v1] Wed, 20 Nov 2013 14:46:41 UTC (317 KB)
[v2] Wed, 9 Apr 2014 08:47:24 UTC (317 KB)
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