Charmed bottom baryon spectroscopy from lattice QCD
We calculate the masses of baryons containing one, two, or three heavy quarks using lattice QCD. We consider all possible combinations of charm and bottom quarks, and compute a total of 36 different states with J[superscript P] = [1+ over 2] and J[superscript P] = [3+ over 2]. We use domain-wall fer...
| Main Authors: | , , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2014
|
| Online Access: | http://hdl.handle.net/1721.1/91659 https://orcid.org/0000-0002-0400-8363 |
| _version_ | 1826211290361626624 |
|---|---|
| author | Brown, Zachary S. Detmold, William Meinel, Stefan Orginos, Kostas |
| author2 | Massachusetts Institute of Technology. Center for Theoretical Physics |
| author_facet | Massachusetts Institute of Technology. Center for Theoretical Physics Brown, Zachary S. Detmold, William Meinel, Stefan Orginos, Kostas |
| author_sort | Brown, Zachary S. |
| collection | MIT |
| description | We calculate the masses of baryons containing one, two, or three heavy quarks using lattice QCD. We consider all possible combinations of charm and bottom quarks, and compute a total of 36 different states with J[superscript P] = [1+ over 2] and J[superscript P] = [3+ over 2]. We use domain-wall fermions for the up, down, and strange quarks, a relativistic heavy-quark action for the charm quarks, and nonrelativistic QCD for the bottom quarks. Our analysis includes results from two different lattice spacings and seven different pion masses. We perform extrapolations of the baryon masses to the continuum limit and to the physical pion mass using SU(4|2) heavy-hadron chiral perturbation theory including 1/m[subscript Q] and finite-volume effects. For the 14 singly heavy baryons that have already been observed, our results agree with the experimental values within the uncertainties. We compare our predictions for the hitherto unobserved states with other lattice calculations and quark-model studies. |
| first_indexed | 2024-09-23T15:03:53Z |
| format | Article |
| id | mit-1721.1/91659 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T15:03:53Z |
| publishDate | 2014 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/916592022-09-29T12:22:19Z Charmed bottom baryon spectroscopy from lattice QCD Brown, Zachary S. Detmold, William Meinel, Stefan Orginos, Kostas Massachusetts Institute of Technology. Center for Theoretical Physics Massachusetts Institute of Technology. Department of Physics Detmold, William Meinel, Stefan We calculate the masses of baryons containing one, two, or three heavy quarks using lattice QCD. We consider all possible combinations of charm and bottom quarks, and compute a total of 36 different states with J[superscript P] = [1+ over 2] and J[superscript P] = [3+ over 2]. We use domain-wall fermions for the up, down, and strange quarks, a relativistic heavy-quark action for the charm quarks, and nonrelativistic QCD for the bottom quarks. Our analysis includes results from two different lattice spacings and seven different pion masses. We perform extrapolations of the baryon masses to the continuum limit and to the physical pion mass using SU(4|2) heavy-hadron chiral perturbation theory including 1/m[subscript Q] and finite-volume effects. For the 14 singly heavy baryons that have already been observed, our results agree with the experimental values within the uncertainties. We compare our predictions for the hitherto unobserved states with other lattice calculations and quark-model studies. United States. Dept. of Energy (Cooperative Research Agreement DE-FG02-94ER40818) United States. Dept. of Energy (Early Career Research Award DE-SC0010495) Solomon Buchsbaum AT&T Research Fund 2014-11-20T18:40:21Z 2014-11-20T18:40:21Z 2014-11 2014-09 2014-11-19T23:00:11Z Article http://purl.org/eprint/type/JournalArticle 1550-7998 1550-2368 http://hdl.handle.net/1721.1/91659 Brown, Zachary S., William Detmold, Stefan Meinel, and Kostas Orginos. "Charmed bottom baryon spectroscopy from lattice QCD." Phys. Rev. D 90, 094507 (November 2014). © 2014 American Physical Society https://orcid.org/0000-0002-0400-8363 en http://dx.doi.org/10.1103/PhysRevD.90.094507 Physical Review D Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. American Physical Society application/pdf American Physical Society American Physical Society |
| spellingShingle | Brown, Zachary S. Detmold, William Meinel, Stefan Orginos, Kostas Charmed bottom baryon spectroscopy from lattice QCD |
| title | Charmed bottom baryon spectroscopy from lattice QCD |
| title_full | Charmed bottom baryon spectroscopy from lattice QCD |
| title_fullStr | Charmed bottom baryon spectroscopy from lattice QCD |
| title_full_unstemmed | Charmed bottom baryon spectroscopy from lattice QCD |
| title_short | Charmed bottom baryon spectroscopy from lattice QCD |
| title_sort | charmed bottom baryon spectroscopy from lattice qcd |
| url | http://hdl.handle.net/1721.1/91659 https://orcid.org/0000-0002-0400-8363 |
| work_keys_str_mv | AT brownzacharys charmedbottombaryonspectroscopyfromlatticeqcd AT detmoldwilliam charmedbottombaryonspectroscopyfromlatticeqcd AT meinelstefan charmedbottombaryonspectroscopyfromlatticeqcd AT orginoskostas charmedbottombaryonspectroscopyfromlatticeqcd |