Nucleon decay matrix elements from lattice QCD

JLQCD, Collaboration; Aoki, S; Fukugita, M; Hashimoto, S; Ishikawa, Kenichi; Ishizuka, N; Iwasaki, Y; Kanaya, K; Kaneda, T; Kaya, S; Kuramashi, Y; Okawa, Masanori; Onogi, T; Tominaga, S; Tsutsui, N; Ukawa, A; Yamada, N; Yoshié, T

doi:http://dx.doi.org/10.1103/PhysRevD.62.014506

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lat lon distance

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Nucleon decay matrix elements from lattice QCD

https://hiroshima.repo.nii.ac.jp/records/2008351

名前 / ファイル	ライセンス	アクション
e014506.pdf (304.7 KB)

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デフォルトアイテムタイプ_（フル）(1)

公開日

2023-03-18

タイトル

Nucleon decay matrix elements from lattice QCD

言語

作成者

JLQCD, Collaboration
Aoki, S
Fukugita, M
Hashimoto, S
Ishikawa, Kenichi
Ishizuka, N
Iwasaki, Y
Kanaya, K
Kaneda, T
Kaya, S
Kuramashi, Y
Okawa, Masanori
Onogi, T
Tominaga, S
Tsutsui, N
Ukawa, A
Yamada, N
Yoshié, T

アクセス権

open access

アクセス権URI

http://purl.org/coar/access_right/c_abf2

権利情報

主題

主題Scheme

NDC

主題

420

内容記述

We present a model-independent calculation of hadron matrix elements for all dimension-6 operators associated with baryon number violating processes using lattice QCD. The calculation is performed with the Wilson quark action in the quenched approximation at β=6/g2=6.0 on a 282×48×80 lattice. Our results cover all the matrix elements required to estimate the partial lifetimes of (proton,neutron)→(π,K,η)+(ν̅,e+,μ+) decay modes. We point out the necessity of disentangling two form factors that contribute to the matrix element; previous calculations did not make the separation, which led to an underestimate of the physical matrix elements. With a correct separation, we find that the matrix elements have values 3–5 times larger than the smallest estimates employed in phenomenological analyses of the nucleon decays, which could give strong constraints on several GUT models. We also find that the values of the matrix elements are comparable with the tree-level predictions of the chiral Lagrangian.

言語

出版者

The American Physical Society

言語

eng

資源タイプ

資源タイプ識別子

http://purl.org/coar/resource_type/c_6501

資源タイプ

journal article

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VoR

出版タイプResource

http://purl.org/coar/version/c_970fb48d4fbd8a85

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2025-02-21 04:20:59.711830

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Nucleon decay matrix elements from lattice QCD

× JLQCD, Collaboration

× Aoki, S

× Fukugita, M

× Hashimoto, S

× Ishikawa, Kenichi

× Ishizuka, N

× Iwasaki, Y

× Kanaya, K

× Kaneda, T

× Kaya, S

× Kuramashi, Y

× Okawa, Masanori

× Onogi, T

× Tominaga, S

× Tsutsui, N

× Ukawa, A

× Yamada, N

× Yoshié, T

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