eta-prime meson mass in lattice QCD.
Physical Review Letters Volume 72
Page 3448-3451
published_at 1994
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| File | |
| Title ( eng ) |
eta-prime meson mass in lattice QCD.
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| Creator |
Kuramashi Y
Fukugita M
Mino H
Ukawa A
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| Source Title |
Physical Review Letters
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| Volume | 72 |
| Start Page | 3448 |
| End Page | 3451 |
| Abstract |
It is shown that the mass difference between η′ and pseudoscalar octet mesons can be calculated in quenched lattice QCD with the aid of a variant wall source technique. The estimated mass difference increases as the quark mass decreases, and its value extrapolated to the zero-quark-mass limit. mη′2-m82=(750±40 MeV)2, is close to the value determined from experiment (850 MeV)2. These results indicate that the long-standing U(1) problem could be solved in lattice QCD, with its essential part being understood within the quenched approximation. We also comment on implications of our results on spurious infrared divergences in quenched QCD.
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| NDC |
Physics [ 420 ]
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| Language |
eng
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| Resource Type | journal article |
| Publisher |
The American Physical Society
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| Date of Issued | 1994 |
| Rights |
Copyright (c) 1994 The American Physical Society
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| Publish Type | Version of Record |
| Access Rights | open access |
| Source Identifier |
[ISSN] 0031-9007
[DOI] http://dx.doi.org/10.1103/PhysRevLett.72.3448
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