Baryon Spectroscopy using Anisotropic Clover Lattices

Collaboration Web Page (Password-Protected)

Proposals

2007

This is a request for 560,000 Processor-Hours on the JLab “6n” cluster or its equivalent to study the baryon spectrum on anisotropic clover lattices generated as under the project Dynamical Anisotropic Lattice Generation for Hadronic Physics. The aim of the proposal is to demonstrate that we can isolate not only the ground state energy, but several excited-state energies, in each channel, classified according to the symmetries of the lattice. By working at multiple volumes, we aim to delineate single– and multi-particle states, and by examining degeneracies in the energies in the different lattice channels, identify the continuum spin of the states.

The full proposal can be view here.

People

Jefferson Laboratory

Saul Cohen, Jozef Dudek¹, Robert Edwards, Balint Joo, Huey-Wen Lin, Kostas Orginos², David Richards, Anthony Thomas

¹Old Dominion University, ²William and Mary

Yale

George Fleming

University of the Pacific

Jimmy Juge

RBRC/Brookhaven National Laboratory

Adam Lichtl

Carnegie-Mellon University

John Bulava, Justin Foley, Colin Morningstar

University of Maryland

Eric Engelson, Steve Wallace

Tata Institute

Nilmani Mathur

Trinity College Dublin

Mike Peardon, Sinead Ryan

Publications

Refereed publications

1. Group-theoretical construction of extended baryon operators in lattice QCD, S. Basak et al., Phys. Rev. D 72, 094506 (2005) arXiv: hep-lat/0506029.

2. Clebsch-Gordan construction of lattice interpolating fields for excited baryons, S. Basak et al., Phys. Rev. D 72, 074501 (2005) arXiv: hep-lat/0508018.

3. Angular momentum on the lattice: The case of non-zero linear momentum, D. C. Moore and G. T. Fleming, Phys. Rev. D 73, 014504 (2005) arXiv: hep-lat/0507018.

4. Lattice QCD determination of patterns of excited baryon states, S. Basak et al., Phys.Rev.D76:074504,2007, arXiv:hep-lat/07090008.

1. Other publications

2. Baryon operators and baryon spectroscopy, D. G. Richards et al. [LHP Collaboration], arXiv: hep-lat/0601034, to appear in the proceedings of Workshop on Computational Hadron Physics, Cyprus, September 14-17, 2005.

3. Towards a determination of the spectrum of QCD using a space-time lattice, C. Morningstar et al. [LHP Collaboration], arXiv: hep-lat/0601029, to appear in the proceedings of International Workshop on the Physics of Excited Baryons (NSTAR 2005), The Florida State University, Tallahassee, Florida, October 12-15, 2005.

4. Combining quark and link smearing to improve extended baryon operators, A. Lichtl et al. [LHP Collaboration], PoS(LAT2005)076, arXiv: hep-lat/0509179, The XXIII International Symposium on Lattice Field Theory (Lattice2005), Trinity College, Dublin, Ireland, July 25-30, 2005.

5. Exploring the spectrum of QCD using a space-time lattice, C. Morningstar, arXiv: hep-lat/0509076, to appear in the Proceedings of International Conference on QCD and Hadronic Physics, Beijing University, Beijing, China, June 16-20, 2005.

6. Looking for pentaquarks in lattice QCD, G. T. Fleming, J. Phys. Conf. Ser. 9, 226 (2005), arXiv: hep-lat/0501011, 1^st Meeting of the APS Topical Group on Hadronic Physics (GHP 2004), Fermi National Accelerator Laboratory, 24-26 October 2004, 2004.

7. Lattice studies of baryons, D. G. Richards, J. Phys. Conf. Ser. 9, 238 (2005), 1^st Meeting of the APS Topical Group on Hadronic Physics (GHP 2004), Fermi National Accelerator Laboratory, 24-26 October 2004, 2004.

8. Baryon spectroscopy and operator construction in lattice QCD, D. G. Richards et al. [LHP Collaboration], in the Proceedings of Workshop on the Large N_c QCD (LNC 2004), ECT^*, Trento, Italy, July 5-9, 2004.

9. Group-theoretical construction of extended baryon operators, C. Morningstar et al. [LHP Collaboration], Nucl. Phys. Proc. Suppl. 140, 287 (2005), arXiv: hep-lat/0409093, The XXII International Symposium on Lattice Field Theory (Lattice2004), Fermi National Accelerator Laboratory, June 21-26, 2004.

10. Analysis of N^* spectra using matrices of correlation functions based on irreducible baryon operators, S. Basak et al. [LHP Collaboration], Nucl. Phys. Proc. Suppl. 140, 278 (2005), arXiv: hep-lat/0409082, The XXII International Symposium on Lattice Field Theory (Lattice2004), Fermi National Accelerator Laboratory, June 21-26, 2004.

11. Baryonic sources using irreducible representations of the double-covered octahedral group, I. Sato et al. [LHP Collaboration], Nucl. Phys. Proc. Suppl. 140, 281 (2005), arXiv: hep-lat/0409080, The XXII International Symposium on Lattice Field Theory (Lattice2004), Fermi National Accelerator Laboratory, June 21-26, 2004.

12. Baryon Operators and Spectroscopy in Lattice QCD, D. G. Richards et al. [LHP Collaboration], Nucl. Phys. Proc. Suppl. 128, 186 (2004) , arXiv: hep-lat/0312003, Workshop on Lattice Hadron Physics 2003 (LHP2003) , Cairns, Australia, 22 - 30 July 2003.

13. Lattice QCD and Nucleon Resonances, R. G. Edwards, H. R. Fiebig, G. T. Fleming and D. G. Richards [LHP Collaboration], Nucl. Phys. A 737, 167 (2004), The 17th International IUPAP Conference on Few-Body Problems in Physics, Durham, North Carolina, 5 - 10 June 2003.

14. Mass spectrum of N^* and source optimization, S. Basak et al. [LHP Collaboration], Nucl. Phys. Proc. Suppl. 129-130, 209 (2004), arXiv: hep-lat/0309091, The XXI International Symposium on Lattice Field Theory (Lattice2003), Tsukuba, Ibaraki, Japan, 15 - 19 July 2003.

15. Baryonic operators for lattice simulations, C. Morningstar et al. [LHP Collaboration], Nucl. Phys. Proc. Suppl. 129-130, 236 (2004), arXiv: hep-lat/0309079, The XXI International Symposium on Lattice Field Theory (Lattice2003), Tsukuba, Ibaraki, Japan, 15 - 19 July 2003.

16. Baryon spectroscopy on the lattice: Recent results, C. Morningstar, AIP Conf. Proc. 698, 530 (2004), arXiv: nucl-th/0308026, 8^th Conference on the Intersections of Particle and Nuclear Physics (CIPANP 2003), New York, New York, 19 - 24 May 2003.

17. Spectroscopy using the Anisotropic Clover Action, R. G. Edwards, U. M. Heller and D. G. Richards, Nucl. Phys. Proc. Suppl. 119, 305 (2003), arXiv: hep-lat/0303004, The XX International Symposium on Lattice Field Theory (Lattice2002), Boston, Massachusetts, 24 - 29 June 2002.