Výsledky vyhledávání - "Bouchard C. M."

Akademický článek

Publikováno v: EPJ Web of Conferences, Vol 175, p 13008 (2018)

Using the MILC 2+1 flavor asqtad quark action ensembles, we are calculating the form factors f0 and f+ for the semileptonic Bs → Kℓv decay. A total of six ensembles with lattice spacing from ≈ 0.12 to 0.06 fm are being used. At the coarsest and

Externí odkaz: https://doaj.org/article/571ad1bc79654322b785f65195a3e306

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$B_s \to K \ell\nu$ form factors with 2+1 flavors

Publikováno v: EPJ Web of Conferences 175, 13008 (2018)

Using the MILC 2+1 flavor asqtad quark action ensembles, we are calculating the form factors $f_0$ and $f_+$ for the semileptonic $B_s \rightarrow K \ell\nu$ decay. A total of six ensembles with lattice spacing from $\approx0.12$ to 0.06 fm are being

Externí odkaz: http://arxiv.org/abs/1711.08085

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Short-distance matrix elements for $D^0$-meson mixing for $N_f=2+1$ lattice QCD

Publikováno v: Phys. Rev. D 97, 034513 (2018)

We calculate in three-flavor lattice QCD the short-distance hadronic matrix elements of all five $\Delta C=2$ four-fermion operators that contribute to neutral $D$-meson mixing both in and beyond the Standard Model. We use the MILC Collaboration's $N

Externí odkaz: http://arxiv.org/abs/1706.04622

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D-Meson Mixing in 2+1-Flavor Lattice QCD

Autor: Chang, Chia Cheng, Bouchard, C. M., El-Khadra, A. X., Freeland, E., Gámiz, E., Kronfeld, A. S., Laiho, J. W., Neil, E. T., Simone, J. N., Van de Water, R. S.

We present results for neutral D-meson mixing in 2+1-flavor lattice QCD. We compute the matrix elements for all five operators that contribute to D mixing at short distances, including those that only arise beyond the Standard Model. Our results have

Externí odkaz: http://arxiv.org/abs/1701.05916

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$B^0_{(s)}$-mixing matrix elements from lattice QCD for the Standard Model and beyond

Publikováno v: Phys. Rev. D 93, 113016 (2016)

We calculate---for the first time in three-flavor lattice QCD---the hadronic matrix elements of all five local operators that contribute to neutral $B^0$- and $B_s$-meson mixing in and beyond the Standard Model. We present a complete error budget for

Externí odkaz: http://arxiv.org/abs/1602.03560

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$B\to Kl^+l^-$ decay form factors from three-flavor lattice QCD

Publikováno v: Phys. Rev. D 93, 025026 (2016)

We compute the form factors for the $B \to Kl^+l^-$ semileptonic decay process in lattice QCD using gauge-field ensembles with 2+1 flavors of sea quark, generated by the MILC Collaboration. The ensembles span lattice spacings from 0.12 to 0.045 fm an

Externí odkaz: http://arxiv.org/abs/1509.06235

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$B\to\pi\ell\ell$ form factors for new-physics searches from lattice QCD

Publikováno v: Phys. Rev. Lett. 115, 152002 (2015)

The rare decay $B\to\pi\ell^+\ell^-$ arises from $b\to d$ flavor-changing neutral currents and could be sensitive to physics beyond the Standard Model. Here, we present the first $ab$-$initio$ QCD calculation of the $B\to\pi$ tensor form factor $f_T$

Externí odkaz: http://arxiv.org/abs/1507.01618

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$|V_{ub}|$ from $B\to\pi\ell\nu$ decays and (2+1)-flavor lattice QCD

Publikováno v: Phys. Rev. D 92, 014024 (2015)

We present a lattice-QCD calculation of the $B\to\pi\ell\nu$ semileptonic form factors and a new determination of the CKM matrix element $|V_{ub}|$. We use the MILC asqtad 2+1-flavor lattice configurations at four lattice spacings and light-quark mas

Externí odkaz: http://arxiv.org/abs/1503.07839

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The $B \to D \ell \nu$ form factors at nonzero recoil and $|V_{cb}|$ from $2+1$-flavor lattice QCD

Publikováno v: Phys. Rev. D 92, 034506 (2015)

We present the first unquenched lattice-QCD calculation of the hadronic form factors for the exclusive decay $\overline{B} \rightarrow D \ell \overline{\nu}$ at nonzero recoil. We carry out numerical simulations on fourteen ensembles of gauge-field c

Externí odkaz: http://arxiv.org/abs/1503.07237

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Testing the Standard Model under the weight of heavy flavors

Autor: Bouchard, C. M.

I review recently completed (since Lattice 2013) and ongoing lattice calculations in charm and bottom flavor physics. A comparison of the precision of lattice and experiment is made using both current experimental results and projected experimental p

Externí odkaz: http://arxiv.org/abs/1501.03204

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