| dc.contributor.author | RYAN, SINEAD | en |
| dc.contributor.author | PEARDON, MICHAEL | en |
| dc.date.accessioned | 2017-01-12T14:39:44Z | |
| dc.date.available | 2017-01-12T14:39:44Z | |
| dc.date.issued | 2016 | en |
| dc.date.submitted | 2016 | en |
| dc.identifier.citation | Moir G, Peardon M, Ryan S.M, Thomas C.E, Wilson D.J, on behalf of the Hadron Spectrum collaboratio, Coupled-channel DÏ , Dη and D<inf>s</inf>K¯ scattering from lattice QCD, Journal of High Energy Physics, 2016, 10, 2016, 011 | en |
| dc.identifier.other | Y | en |
| dc.description | PUBLISHED | en |
| dc.description | Cited By :3 Export Date: 6 January 2017 | en |
| dc.description.abstract | We present the rst lattice QCD study of coupled-channel
D
,
D
and
D
s
K
scattering in isospin-1/2 in three partial waves. Using distillation, we compute matrices of
correlation functions with bases of operators capable of resolving both meson and meson-
meson contributions to the spectrum. These correlation matrices are analysed using a
variational approach to extract the nite-volume energy eigenstates. Utilising L uscher's
method and its extensions, we constrain scattering amplitudes in
S
,
P
and
D
-wave as
a function of energy. By analytically continuing the scattering amplitudes to complex
energies, we investigate the
S
-matrix singularities. Working at
m
391 MeV, we nd a
pole corresponding to a
J
P
= 0
+
near-threshold bound state with a large coupling to
D
.
We also nd a deeply bound
J
P
= 1 | en |
| dc.description.sponsorship | We thank our colleagues within the Hadron Spectrum Collaboration. GM acknowledges
support from the Herchel Smith Fund at the University of Cambridge and the Deutsche
Forschungsgemeinschaft (DFG) under contract KN 947/1-2. SMR acknowledges support
from Science Foundation Ireland [RFP-PHY-3201]. CET acknowledges support from the
U.K. Science and Technology Facilities Council (STFC) [grant ST/L000385/1] and the
Isaac Newton Trust/University of Cambridge Early Career Support Scheme [RG74916].
The software codes
Chroma
[
58
] and
QUDA
[
59
,
60
] were used to perform this work at
Je erson Laboratory under the USQCD Initiative and the LQCD ARRA project, and on
the Lonsdale cluster maintained by the Trinity Centre for High Performance Computing
funded through grants from Science Foundation Ireland (SFI). This work also used the
DiRAC Data Analytic system at the University of Cambridge, operated by the University
of Cambridge High Performance Computing Service on behalf of the STFC DiRAC HPC
Facility (
www.dirac.ac.uk
). This equipment was funded by BIS National E-infrastructure
capital grant ST/K001590/1, STFC capital grants ST/H008861/1 and ST/H00887X/1,
and STFC DiRAC Operations grant ST/K00333X/1. DiRAC is part of the National
E-Infrastructure. This research also used the Wilkes GPU cluster at the University of
Cambridge High Performance Computing Service (
http://www.hpc.cam.ac.uk/
), | en |
| dc.format.extent | 011 | en |
| dc.relation.ispartofseries | Journal of High Energy Physics | en |
| dc.relation.ispartofseries | 2016 | en |
| dc.relation.ispartofseries | 10 | en |
| dc.rights | Y | en |
| dc.subject | lattice QCD study of coupled-channel | en |
| dc.subject.lcsh | lattice QCD study of coupled-channel | en |
| dc.title | Coupled-channel DÏ , Dη and D<inf>s</inf>K¯ scattering from lattice QCD | en |
| dc.type | Journal Article | en |
| dc.type.supercollection | scholarly_publications | en |
| dc.type.supercollection | refereed_publications | en |
| dc.identifier.peoplefinderurl | http://people.tcd.ie/ryansin | en |
| dc.identifier.peoplefinderurl | http://people.tcd.ie/peardonm | en |
| dc.identifier.rssinternalid | 141200 | en |
| dc.identifier.doi | http://dx.doi.org/10.1007/JHEP10(2016)011 | en |
| dc.rights.ecaccessrights | openAccess | |
| dc.identifier.rssuri | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84990241729&doi=10.1007%2fJHEP10%282016%29011&partnerID=40&md5=68e59ebe851dabad7fd795ce47e1a796 | en |
| dc.contributor.sponsor | Science Foundation Ireland (SFI) | en |
| dc.contributor.sponsorGrantNumber | RFP-PHY-3201 | en |
| dc.identifier.uri | http://hdl.handle.net/2262/78710 | |
