S. Collins

activity

19942023

most citedFLAG Review 2021

614 citations · 3.2k across the 70 of their papers we have counts for

collaborators

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73 papers · 1 filter

hep-lat2023★ 33 cited

Octet baryon isovector charges from $N_{f} = 2 + 1$ lattice QCD

Gunnar S. Bali, Sara Collins, Simon Heybrock +4

We determine the axial, scalar and tensor isovector charges of the nucleon, sigma and cascade baryons as well as the difference between the up and down quark masses, $m_{u} - m_{d}$ . We…

hep-lat2023

Sigma terms of the baryon octet in $N_{f} = 2 + 1$ QCD with Wilson quarks

Pia Leonie Jones Petrak, Gunnar Bali, Sara Collins +3

A lot of progress has been made in the direct determination of nucleon sigma terms. Using similar methods, we consider the sigma terms of the other octet baryons as well. These are…

hep-lat2022

Charmonium-like states with $J^{P} = 1^{+}$ and isospin 1

Mitja Sadl, Sara Collins, M. Padmanath +1

Many mesons with properties incompatible with a $c ˉ c$ structure have already been discovered, e.g. the $Z_{c}$ mesons with isospin 1. We investigate the spectrum of exotic charmo…

hep-lat2022★ 40 cited

Scale setting and the light baryon spectrum in $N_{f} = 2 + 1$ QCD with Wilson fermions

Gunnar S. Bali, Sara Collins, Peter Georg +7

We determine the light baryon spectrum on ensembles generated by the Coordinated Lattice Simulations (CLS) effort, employing $N_{f} = 2 + 1$ flavours of non-perturbatively improved Wilso…

hep-lat2022

Determination of $m_{c}$ from $N_{f} = 2 + 1$ QCD with Wilson fermions

Gunnar Bali, Sjoerd Bouma, Sara Collins +1

We present preliminary results for the charm quark mass in the $N_{f} = 4$ RGI scheme. These were obtained using $N_{f} = 2 + 1$ CLS ensembles with $O (a)$ non-perturbatively improv…

hep-lat2022★ 18 cited

Leading order mesonic and baryonic SU(3) low energy constants from $N_{f} = 3$ lattice QCD

Gunnar S. Bali, Sara Collins, Wolfgang Söldner +1

We determine the leading order mesonic~( $B_{0}$ and $F_{0}$ ) and baryonic~( $m_{0}$ , $D$ and $F$ ) SU(3) chiral perturbation theory low energy constants from lattice QCD. We employ gauge e…

hep-lat2021

Scale Setting for CLS 2+1 Simulations

Ben Straßberger, Marco Cè, Sara Collins +9

We present an update of the scale setting for $N_{f} = 2 + 1$ flavor QCD using gradient flow scales and pseudo-scalar decay constants. We analyze the latest ensembles with $2 + 1$ flavors…

hep-lat2021

Towards the determination of sigma terms for the baryon octet on $N_{f} = 2 + 1$ CLS ensembles

Pia Leonie Jones Petrak, Gunnar Bali, Sara Collins +4

A lot of progress has been made in the determination of nucleon sigma terms. In this work we consider the sigma terms of the other octet baryons as well. These are determined on CL…

hep-lat2021

Nucleon Charges and Sigma Terms from $N_{f} = 2 + 1$ QCD

Daniel Jenkins, Sara Collins, Gunnar Bali

We report on recent progress of our analysis of the nucleon sigma terms, as well as the singlet scalar, axial and tensor nucleon charges. These are determined employing the CLS gau…

hep-lat2021

Charmonium-like resonances in coupled $D D ˉ$ - $D_{s} D ˉ_{s}$ scattering

S. Prelovsek, S. Collins, D. Mohler +2

Charmonium-like resonances and bound states with isospin zero and $J^{P C} = 0^{++}, 1^{--}, 2^{++}, 3^{--}$ are extracted on the lattice. Coupled $D D ˉ$ and $D_{s} D ˉ_{s}$ scatteri…

hep-lat2021

Properties of the $η$ and $η^{'}$ mesons: Masses, decay constants and gluonic matrix elements

Gunnar S. Bali, Sara Collins, Jakob Simeth

We present results for the $η$ and $η^{'}$ masses and their four independent decay constants at the physical point as well as their anomalous gluonic matrix elements $a_{η^{(\pr…

hep-lat2021★ 614 cited

FLAG Review 2021

Y. Aoki, T. Blum, G. Colangelo +34

We review lattice results related to pion, kaon, $D$ -meson, $B$ -meson, and nucleon physics with the aim of making them easily accessible to the nuclear and particle physics communi…

hep-lat2021★ 17 cited

Lattice results for the longitudinal spin structure and color forces on quarks in a nucleon

S. Bürger, T. Wurm, M. Löffler +5

Using lattice QCD, we calculate the twist-2 contribution $a_{2}$ to the third Mellin moment of the spin structure functions $g_{1}$ and $g_{2}$ in the nucleon. In addition we evaluate th…

hep-lat2021

Investigating $N \to N π$ axial matrix elements

Lorenzo Barca, Gunnar S. Bali, Sara Collins

Excited state contamination is one of the most challenging sources of systematics to tackle in the determination of nucleon matrix elements and form factors. The signal-to-noise pr…

hep-lat2021★ 66 cited

Masses and decay constants of the $η$ and $η^{'}$ mesons from lattice QCD

Gunnar S. Bali, Vladimir Braun, Sara Collins +2

We determine the masses, the singlet and octet decay constants as well as the anomalous matrix elements of the $η$ and $η^{'}$ mesons in $N_{f} = 2 + 1$ QCD\@. The results are obtaine…

hep-lat2020★ 83 cited

Charmonium-like resonances with $J^{P C} = 0^{++}, 2^{++}$ in coupled $D D ˉ$ , $D_{s} D ˉ_{s}$ scattering on the lattice

S. Prelovsek, S. Collins, D. Mohler +2

We present the first lattice investigation of coupled-channel $D D ˉ$ and $D_{s} D ˉ_{s}$ scattering in the $J^{P C} = 0^{++}$ and $2^{++}$ channels. The scattering matrix for partial…

hep-lat2019★ 83 cited

Nucleon axial structure from lattice QCD

Gunnar S. Bali, Lorenzo Barca, Sara Collins +7

We present a new analysis method that allows one to understand and model excited state contributions in observables that are dominated by a pion pole. We apply this method to extra…

hep-lat2019★ 30 cited

Charmonium resonances with $J^{P C} = 1^{--}$ and $3^{--}$ from $D ˉ D$ scattering on the lattice

S. Piemonte, S. Collins, D. Mohler +2

We present a lattice QCD study of charmonium resonances and bound states with $J^{P C} = 1^{--}$ and $3^{--}$ near the open-charm threshold, taking into account their strong transitio…

hep-lat2019★ 68 cited

Light-cone distribution amplitudes of octet baryons from lattice QCD

Gunnar S. Bali, Vladimir M. Braun, Simon Bürger +9

We present lattice QCD results for the wave function normalization constants and the first moments of the distribution amplitudes for the lowest-lying baryon octet. The analysis is…

hep-lat2018

Charmonium resonances from 2+1 flavor CLS lattices

Sara Collins, Daniel Mohler, M. Padmanath +3

Many exotic charmonium resonances have been identified recently in experiment, however their nature and properties are mostly unknown. Algorithmic and theoretical progress in latti…

hep-lat2018★ 48 cited

Nucleon generalized form factors from two-flavor lattice QCD

Gunnar S. Bali, Sara Collins, Meinulf Göckeler +3

We determine the generalized form factors, which correspond to the second Mellin moment (i.e., the first $x$ -moment) of the generalized parton distributions of the nucleon at leadi…

hep-lat2018★ 14 cited

Identifying spin and parity of charmonia in flight with lattice QCD

M. Padmanath, Sara Collins, Daniel Mohler +4

The spectrum of charmonium resonances contains a number of unanticipated states along with several conventional quark-model excitations. The hadrons of different quantum numbers $J…

hep-lat2018★ 3 cited

Charmonium resonances on the lattice

G. S. Bali, S. Collins, D. Mohler +4

The nature of resonances and excited states near decay thresholds is encoded in scattering amplitudes, which can be extracted from single-particle and multiparticle correlators in…

hep-lat2017★ 3 cited

Leptonic decay constants for D-mesons from 3-flavour CLS ensembles

Sara Collins, Kevin Eckert, Jochen Heitger +2

We report on the status of an ongoing effort by the RQCD and ALPHA Collaborations, aimed at determining leptonic decay constants of charmed mesons. Our analysis is based on large-v…

Octet baryon isovector charges from Nf​=2+1 lattice QCD

Sigma terms of the baryon octet in Nf​=2+1 QCD with Wilson quarks

Charmonium-like states with JP=1+ and isospin 1

Scale setting and the light baryon spectrum in Nf​=2+1 QCD with Wilson fermions

Determination of mc​ from Nf​=2+1 QCD with Wilson fermions

Leading order mesonic and baryonic SU(3) low energy constants from Nf​=3 lattice QCD

Scale Setting for CLS 2+1 Simulations

Towards the determination of sigma terms for the baryon octet on Nf​=2+1 CLS ensembles

Nucleon Charges and Sigma Terms from Nf​=2+1 QCD

Charmonium-like resonances in coupled DDˉ-Ds​Dˉs​ scattering

Properties of the η and η′ mesons: Masses, decay constants and gluonic matrix elements

FLAG Review 2021

Lattice results for the longitudinal spin structure and color forces on quarks in a nucleon

Investigating N→Nπ axial matrix elements

Masses and decay constants of the η and η′ mesons from lattice QCD

Charmonium-like resonances with JPC=0++,2++ in coupled DDˉ, Ds​Dˉs​ scattering on the lattice

Nucleon axial structure from lattice QCD

Charmonium resonances with JPC=1−− and 3−− from DˉD scattering on the lattice

Light-cone distribution amplitudes of octet baryons from lattice QCD

Charmonium resonances from 2+1 flavor CLS lattices

Nucleon generalized form factors from two-flavor lattice QCD

Identifying spin and parity of charmonia in flight with lattice QCD

Charmonium resonances on the lattice

Leptonic decay constants for D-mesons from 3-flavour CLS ensembles

Octet baryon isovector charges from $N_{f} = 2 + 1$ lattice QCD

Sigma terms of the baryon octet in $N_{f} = 2 + 1$ QCD with Wilson quarks

Charmonium-like states with $J^{P} = 1^{+}$ and isospin 1

Scale setting and the light baryon spectrum in $N_{f} = 2 + 1$ QCD with Wilson fermions

Determination of $m_{c}$ from $N_{f} = 2 + 1$ QCD with Wilson fermions

Leading order mesonic and baryonic SU(3) low energy constants from $N_{f} = 3$ lattice QCD

Towards the determination of sigma terms for the baryon octet on $N_{f} = 2 + 1$ CLS ensembles

Nucleon Charges and Sigma Terms from $N_{f} = 2 + 1$ QCD

Charmonium-like resonances in coupled $D D ˉ$ - $D_{s} D ˉ_{s}$ scattering

Properties of the $η$ and $η^{'}$ mesons: Masses, decay constants and gluonic matrix elements

Investigating $N \to N π$ axial matrix elements

Masses and decay constants of the $η$ and $η^{'}$ mesons from lattice QCD

Charmonium-like resonances with $J^{P C} = 0^{++}, 2^{++}$ in coupled $D D ˉ$ , $D_{s} D ˉ_{s}$ scattering on the lattice

Charmonium resonances with $J^{P C} = 1^{--}$ and $3^{--}$ from $D ˉ D$ scattering on the lattice