Continuum limit of proton decay matrix elements in quenched lattice QCD

• CP-PACS Collaboration

• JLQCD Collaboration

• Tsutsui, N

• Aoki, S

• Fukugita, M

• Hashimoto, S

• Ishikawa, Kenichi

• Ishikawa, T

• Ishizuka, N

• Iwasaki, Y

• Kanaya, K

• Kaneko, T

• Kuramashi, Y

• Okawa, Masanori

• Onogi, T

• Taniguch, N

• Ukawa, A

• Yoshié, T

抄録

We present a lattice QCD calculation of the parameters α and β which are necessary in the theoretical estimation of the proton lifetime in grand unified theories (GUTs) using chiral lagrangian approach. The simulation is carried out using the Wilson quark action at three gauge coupling constants in the quenched approximation. We obtain |α(2GeV)|=0.0091(08)(-19+10)GeV3 and |β(2GeV)| = 0.0098(08) (-20+10)GeV3 in the continuum limit where the first error is statistical and the second one is due to scale setting.

収録刊行物

• Nuclear Physics B Proceedings Supplements

  Nuclear Physics B Proceedings Supplements 129-130 284-286, 2004

  Elsevier Science B.V.

詳細情報

• CRID: 1050296265988084224
• NII論文ID: 120000882035
• Web Site: http://ir.lib.hiroshima-u.ac.jp/00014492
• 本文言語コード: en
• 資料種別: journal article
• データソース種別:
  • IRDB
  • CiNii Articles