Chris Bouchard

activity

20092025

most citedThe

B \to D ℓ ν

form factors at nonzero recoil and

∣ V_{c b} ∣

from

2 + 1

-flavor lattice QCD

266 citations · 352 across the 15 of their papers we have counts for

collaborators

15 papers

hep-lat2025

Towards more accurate $B_{(s)} \to π (K)$ and $D_{(s)} \to π (K)$ form factors

Logan Roberts, Chris Bouchard, Olmo Francesconi +1

We present progress on the calculation of scalar, vector, and tensor form factors for the following meson decays: $B \to π$ , $B_{s} \to K$ , $D \to π$ and $D_s\righ…

hep-ex2019★ 3 cited

Summary of the 2018 CKM working group on semileptonic and leptonic $b$ -hadron decays

Christopher Bouchard, Lu Cao, Patrick Owen

A summary of WG II of the CKM 2018 conference on semileptonic and leptonic $b$ -hadron decays is presented. This includes discussions on the CKM matrix element magitudes $∣ V_{u b} ∣$ …

hep-lat2017

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

Chia Cheng Chang, C. M. Bouchard, A. X. El-Khadra +7

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, inclu…

hep-lat2015★ 1 cited

Decay constants $f_{B}$ and $f_{B_{s}}$ from HISQ simulations

Fermilab Lattice, MILC Collaborations, : +25

We give a progress report on a project aimed at a high-precision calculation of the decay constants $f_{B}$ and $f_{B_{s}}$ from simulations with HISQ heavy and light valence and sea q…

hep-lat2015★ 266 cited

The $B \to D ℓ ν$ form factors at nonzero recoil and $∣ V_{c b} ∣$ from $2 + 1$ -flavor lattice QCD

Fermilab Lattice, MILC Collaborations, : +24

We present the first unquenched lattice-QCD calculation of the hadronic form factors for the exclusive decay $B \to D ℓ ν$ at nonzero recoil. We carr…

hep-lat2014★ 2 cited

Neutral B-meson mixing parameters in and beyond the SM with 2+1 flavor lattice QCD

C. M. Bouchard, E. D. Freeland, C. W. Bernard +6

We report on the status of our calculation of the hadronic matrix elements for neutral $B$ -meson mixing with asqtad sea and valence light quarks and using the Wilson clover action…

hep-lat2013★ 2 cited

Heavy-meson semileptonic decays for the Standard Model and beyond

Yuzhi Liu, Ran Zhou, Jon A. Bailey +25

We calculate the form factors for the semileptonic decays $B_{s} \to K ℓ ν$ and $B \to K ℓℓ$ with lattice QCD. We work at several lattice spacings and a range of light quark mass…

hep-lat2013★ 4 cited

K semileptonic form factor with HISQ fermions at the physical point

E. Gámiz, A. Bazavov, C. Bernard +21

We present results for the form factor $f_{+}^{K π} (0)$ , needed to extract the CKM matrix element $∣ V_{u s} ∣$ from experimental data on semileptonic $K$ decays, on the HISQ $N_f=2+1+1…

hep-ph2013

Flavor Physics and Lattice QCD

C. M. Bouchard

Our ability to resolve new physics effects is, largely, limited by the precision with which we calculate. The calculation of observables in the Standard (or a new physics) Model re…

hep-lat2012★ 1 cited

Two-point Correlator Fits on HISQ Ensembles

A. Bazavov, C. Bernard, C. Bouchard +22

We present our methods to fit the two point correlators for light, strange, and charmed pseudoscalar meson physics with the highly improved staggered quark (HISQ) action. We make u…

hep-ph2012★ 1 cited

Hadronic matrix elements for B-mixing in the Standard Model and beyond

C. M. Bouchard

We use lattice QCD to calculate the B-mixing hadronic matrix elements for a basis of effective four-quark operators that spans the space of all possible contributions in, and beyon…

hep-lat2012★ 34 cited

Neutral B-meson mixing from three-flavor lattice QCD: Determination of the SU(3)-breaking ratio ξ

A. Bazavov, C. Bernard, C. M. Bouchard +20

We study SU(3)-breaking effects in the neutral B_d-\bar B_d and B_s-\bar B_s systems with unquenched N_f=2+1 lattice QCD. We calculate the relevant matrix elements on the MILC coll…

hep-lat2012★ 26 cited

Neutral $B$ mixing from 2+1 flavor lattice-QCD: the Standard Model and beyond

C. M. Bouchard, E. D. Freeland, C. Bernard +5

We report on the status of our lattice-QCD calculation of the hadronic contribution to $B_{d}^{0}$ and $B_{s}^{0}$ mixing, with 2+1 flavors of dynamical sea quarks. Preliminary results for…

hep-lat2011★ 9 cited

B and D meson decay constants from 2+1 flavor improved staggered simulations

E. T. Neil, Jon A. Bailey, A. Bazavov +21

We give an update on simulation results for the decay constants f_B, f_{B_s}, f_D and f_{D_s}. These decay constants are important for precision tests of the standard model, in par…

hep-lat2009★ 3 cited

Progress on charm semileptonic form factors from 2+1 flavor lattice QCD

Jon A. Bailey, A. Bazavov, C. Bernard +19

Lattice calculations of the form factors for the charm semileptonic decays D to K l nu and D to pi l nu provide inputs to direct determinations of the CKM matrix elements |V(cs)| a…