Abstract
We present the first three-flavor lattice QCD calculations for D{yields}{pi}l{nu} and D{yields}Kl{nu} semileptonic decays. Simulations are carried out using ensembles of unquenched gauge fields generated by the MILC Collaboration. With an improved staggered action for light quarks, we are able to simulate at light quark masses down to 1/8 of the strange mass. Consequently, the systematic error from the chiral extrapolation is much smaller than in previous calculations with Wilson-type light quarks. Our results for the form factors at q{sup 2}=0 are f{sub +}{sup D{yields}}{sup {pi}}(0)=0.64(3)(6) and f{sub +}{sup D{yields}}{sup K}(0)=0.73(3)(7), where the first error is statistical and the second is systematic, added in quadrature. Combining our results with experimental branching ratios, we obtain the Cabibbo-Kobayashi-Maskawa matrix elements vertical bar V{sub cd} vertical bar=0.239(10)(24)(20) and vertical bar V{sub cs} vertical bar=0.969(39)(94)(24), where the last errors are from experimental uncertainties.
Aubin, C;
Bernard, C;
[1]
DeTar, C;
Osborn, J;
[2]
DiPierro, M;
[3]
El-Khadra, A;
Menscher, D;
Oktay, M B;
[4]
Gottlieb, Steven;
[5]
Gregory, E B;
Toussaint, D;
[6]
Heller, U M;
[7]
Hetrick, J;
[8]
Kronfeld, A S;
Mackenzie, P B;
Okamoto, M;
Simone, J;
[9]
Nobes, M;
Trottier, H D;
[10]
Sugar, R
[11]
- Department of Physics, Washington University, St. Louis, Missouri 63130 (United States)
- Physics Department, University of Utah, Salt Lake City, Utah 84112 (United States)
- School of Computer Science, Telecommunications and Information Systems, DePaul University, Chicago, Illinois 60604 (United States)
- Physics Department, University of Illinois, Urbana, Illinois 61801-3080 (United States)
- Department of Physics, Indiana University, Bloomington, Indiana 47405 (United States)
- Department of Physics, University of Arizona, Tucson, Arizona 85721 (United States)
- American Physical Society, One Research Road, Box 9000, Ridge, New York 11961-9000 (United States)
- University of the Pacific, Stockton, California 95211 (United States)
- Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States)
- Physics Department, Simon Fraser University, Vancouver, BC (Canada)
- Department of Physics, University of California, Santa Barbara, California 93106 (United States)
Citation Formats
Aubin, C, Bernard, C, DeTar, C, Osborn, J, DiPierro, M, El-Khadra, A, Menscher, D, Oktay, M B, Gottlieb, Steven, Gregory, E B, Toussaint, D, Heller, U M, Hetrick, J, Kronfeld, A S, Mackenzie, P B, Okamoto, M, Simone, J, Nobes, M, Trottier, H D, and Sugar, R.
Semileptonic decays of D mesons in three-flavor lattice QCD.
United States: N. p.,
2005.
Web.
doi:10.1103/PhysRevLett.94.011601.
Aubin, C, Bernard, C, DeTar, C, Osborn, J, DiPierro, M, El-Khadra, A, Menscher, D, Oktay, M B, Gottlieb, Steven, Gregory, E B, Toussaint, D, Heller, U M, Hetrick, J, Kronfeld, A S, Mackenzie, P B, Okamoto, M, Simone, J, Nobes, M, Trottier, H D, & Sugar, R.
Semileptonic decays of D mesons in three-flavor lattice QCD.
United States.
https://doi.org/10.1103/PhysRevLett.94.011601
Aubin, C, Bernard, C, DeTar, C, Osborn, J, DiPierro, M, El-Khadra, A, Menscher, D, Oktay, M B, Gottlieb, Steven, Gregory, E B, Toussaint, D, Heller, U M, Hetrick, J, Kronfeld, A S, Mackenzie, P B, Okamoto, M, Simone, J, Nobes, M, Trottier, H D, and Sugar, R.
2005.
"Semileptonic decays of D mesons in three-flavor lattice QCD."
United States.
https://doi.org/10.1103/PhysRevLett.94.011601.
@misc{etde_20621621,
title = {Semileptonic decays of D mesons in three-flavor lattice QCD}
author = {Aubin, C, Bernard, C, DeTar, C, Osborn, J, DiPierro, M, El-Khadra, A, Menscher, D, Oktay, M B, Gottlieb, Steven, Gregory, E B, Toussaint, D, Heller, U M, Hetrick, J, Kronfeld, A S, Mackenzie, P B, Okamoto, M, Simone, J, Nobes, M, Trottier, H D, and Sugar, R}
abstractNote = {We present the first three-flavor lattice QCD calculations for D{yields}{pi}l{nu} and D{yields}Kl{nu} semileptonic decays. Simulations are carried out using ensembles of unquenched gauge fields generated by the MILC Collaboration. With an improved staggered action for light quarks, we are able to simulate at light quark masses down to 1/8 of the strange mass. Consequently, the systematic error from the chiral extrapolation is much smaller than in previous calculations with Wilson-type light quarks. Our results for the form factors at q{sup 2}=0 are f{sub +}{sup D{yields}}{sup {pi}}(0)=0.64(3)(6) and f{sub +}{sup D{yields}}{sup K}(0)=0.73(3)(7), where the first error is statistical and the second is systematic, added in quadrature. Combining our results with experimental branching ratios, we obtain the Cabibbo-Kobayashi-Maskawa matrix elements vertical bar V{sub cd} vertical bar=0.239(10)(24)(20) and vertical bar V{sub cs} vertical bar=0.969(39)(94)(24), where the last errors are from experimental uncertainties.}
doi = {10.1103/PhysRevLett.94.011601}
journal = []
issue = {1}
volume = {94}
journal type = {AC}
place = {United States}
year = {2005}
month = {Jan}
}
title = {Semileptonic decays of D mesons in three-flavor lattice QCD}
author = {Aubin, C, Bernard, C, DeTar, C, Osborn, J, DiPierro, M, El-Khadra, A, Menscher, D, Oktay, M B, Gottlieb, Steven, Gregory, E B, Toussaint, D, Heller, U M, Hetrick, J, Kronfeld, A S, Mackenzie, P B, Okamoto, M, Simone, J, Nobes, M, Trottier, H D, and Sugar, R}
abstractNote = {We present the first three-flavor lattice QCD calculations for D{yields}{pi}l{nu} and D{yields}Kl{nu} semileptonic decays. Simulations are carried out using ensembles of unquenched gauge fields generated by the MILC Collaboration. With an improved staggered action for light quarks, we are able to simulate at light quark masses down to 1/8 of the strange mass. Consequently, the systematic error from the chiral extrapolation is much smaller than in previous calculations with Wilson-type light quarks. Our results for the form factors at q{sup 2}=0 are f{sub +}{sup D{yields}}{sup {pi}}(0)=0.64(3)(6) and f{sub +}{sup D{yields}}{sup K}(0)=0.73(3)(7), where the first error is statistical and the second is systematic, added in quadrature. Combining our results with experimental branching ratios, we obtain the Cabibbo-Kobayashi-Maskawa matrix elements vertical bar V{sub cd} vertical bar=0.239(10)(24)(20) and vertical bar V{sub cs} vertical bar=0.969(39)(94)(24), where the last errors are from experimental uncertainties.}
doi = {10.1103/PhysRevLett.94.011601}
journal = []
issue = {1}
volume = {94}
journal type = {AC}
place = {United States}
year = {2005}
month = {Jan}
}