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Titolo:
Constraints on the mass and mixing of the fourth generation quark from direct CP violation epsilon '/epsilon and rare K decays - art. no. 016009
Autore:
Huang, CS; Huo, WJ; Wu, YL;
Indirizzi:
Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China Acad Sinica Beijing Peoples R China 100080 ijing 100080, Peoples R China CCAST, World Lab, Beijing 100080, Peoples R China CCAST Beijing Peoples R China 100080 ab, Beijing 100080, Peoples R China Acad Sinica, Inst High Energy Phys, Beijing 100039, Peoples R China Acad Sinica Beijing Peoples R China 100039 ijing 100039, Peoples R China
Titolo Testata:
PHYSICAL REVIEW D
fascicolo: 1, volume: 6401, anno: 2001,
pagine: 6009 -
SICI:
0556-2821(20010701)6401:1<6009:COTMAM>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
HADRONIC MATRIX-ELEMENTS; HIGGS-BOSON EXCHANGE; LARGE-N LIMIT; = 1/2 RULE; STANDARD MODEL; 4TH GENERATION; B0 DECAYS; NEUTRINO OSCILLATIONS; 2-HIGGS-DOUBLET MODEL; DELTA-I=1/2 RULE;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
102
Recensione:
Indirizzi per estratti:
Indirizzo: Huang, CS Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China Acad Sinica POB 2735 Beijing Peoples R China 100080 les R China
Citazione:
C.S. Huang et al., "Constraints on the mass and mixing of the fourth generation quark from direct CP violation epsilon '/epsilon and rare K decays - art. no. 016009", PHYS REV D, 6401(1), 2001, pp. 6009

Abstract

We investigate the epsilon'/epsilon for K --> pi pi in a sequential fourthgeneration model. By giving the basic formulas for epsilon'/epsilon in this model, we analyze the numerical results which are dependent on m(t), and the imaginary part of the fourth CKM factor, IMV*V-t's(t'd) (or V*V-t's(t'd) and the fourth generation CKM matrix phase theta). We find that, unlike the SM, when taking the central values of all parameters for epsilon'/epsilon, the values of epsilon'/epsilon can easily fit to the current experimental data for all values of hadronic matrix elements estimated from various approaches. Also, we show that the experimental values of epsilon'/epsilon and rare K decays can provide a strong constraint on both mass and mixing of the fourth generation quark. When taking the values of hadronic matrix elements from the lattice or 1/N expansion calculations, a large region of the up-type quark mass m(t), is excluded.

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Documento generato il 13/07/20 alle ore 07:24:44