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Hattori, Toshihiko; Hasuike, Tsutom; Wakaizumi, Seiichi

doi:10.1103/physrevd.60.113008

Cited by 23 publications

(18 citation statements)

References 44 publications

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“…2, their global analysis yields a solution region just below the Grossman-Nir limit. Similar large values were also found, for example, by Hattori et al [10]. Hence, New Physics could be lurking just below the GN limit.…”

Section: )supporting

confidence: 85%

The Music of KOTO: K0_L -\rightarrow 0  anti-.

Comfort¹

2012

Proceedings of the XIth International Conference on Heavy Quarks and Leptons — PoS(HQL 2012)

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Section: )supporting

confidence: 85%

The Music of KOTO: K0_L -\rightarrow 0  anti-.

Comfort¹

2012

Proceedings of the XIth International Conference on Heavy Quarks and Leptons — PoS(HQL 2012)

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“…These result don't contradicted the unitarity constraints for quark d, b [24]. Moreover, This small absolute value, λ −4 ∼ λ −5 order, is in agreement with the hierarchy in the CKM matrix elements [25,26]. It seems to give the possible test of this hierarchy and the existence of the fourth generation [26].…”

Section: Introductionsupporting

confidence: 69%

“…The formulae of factor η t ′ is similar to the above equation except for exchanging t by t ′ .In ref. [26], to leading order, η tt ′ was taken as…”

Section: Introductionmentioning

confidence: 99%

Effects of the fourth generation on $\Delta M_{B_{d,s}}$ in $B^0$ – $\bar B^0$ mixing

Huo

2002

Eur. Phys. J. C

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We investigate the mass differences ∆M B d,s in the mixing B 0 d,s −B 0 d,s with a new up-like quark t ′ in a sequential fourth generation model. We give the basic formulae for ∆M B d,s in this model. (1), then, we analysis the final numerical results of ∆M Bs , which is the function of m t ′ through a fourth generation CKM factor V * t ′ s V t ′ b constrained by the rare decay B → X s l + l − and two new Wilson coefficients S 0 (x t ′ ) and S 0 (x t , x t ′ ). We found that one kind of the new results are satisfied with the present experimental low-bound of ∆M Bs . (2), we get the constraint of the fourth generation CKM factor V * t ′ b V t ′ d , (which is also the function of t ′ ), from the experimental measurements of ∆M B d and give the figs. of V * t ′ b V t ′ d to m t ′ and the general CKM factor V * tb V td . We also give the numerical results of the Wilson coefficients S 0 (x t ′ ), S 0 (x t , x t ′ ) and η t ′ , η tt ′ as the function of m t ′ . We also talk about the hierarchy of the fourth generation CKM matrix. As one of the directions beyond the SM, ∆M B d,s could provide a possible test of the fourth generation or perhaps a signal of the new physics.

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“…Using similar techniques, one can search fourth generation effects in B meson decays. The contributions from fourth generation to rare decays have been extensively studied [19,20,21,22,23], where the measured decay rate has been used to put stringent constraints on the additional CKM matrix elements. In addition to B → X s γ , B → X s ℓ + ℓ − can be mentioned as one of the most promising areas in search of the fourth generation, via its indirect loop effects, to constrain V * t ′ b V t ′ s [24,25].…”

Section: Introductionmentioning

confidence: 99%

Simple approach to fourth generation effects inB→Xsl+
Solmaz¹
2004
Phys. Rev. D
11
0
1
0
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In a scenario in which fourth generation fermions exist, we study effects of new physics on the differential decay width, forward-backward asymmetry and integrated branching ratio for B → Xsℓ + ℓ − decay with (ℓ = e, µ). Prediction of the new physics on the mentioned quantities essentially differs from the Standard Model results, in certain regions of the parameter space, enhancement of new physics on the above mentioned physical quantities can yield values as large as two times of the SM predictions, whence present limits of experimental measurements of branching ratio is spanned, contraints of the new physics can be extracted. For the fourth generation CKM factor V * t ′ b V t ′ s we use ±10 −2 and ±10 −3 ranges, take into consideration the possibility of a complex phase where it may bring sizable contributions, obtained no significant dependency on the imaginary part of the new CKM factor. For the above mentioned quantities with a new family, deviations from the SM are promising, can be used as a probe of new physics.

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Effects of theK+→π+νν¯

Abstract: We analyze in the four-generation model the first measurement of the branching ratio of rare kaon decay K + → π + νν, along with the other processes of

Cited by 23 publications

References 44 publications

The Music of KOTO: K0_L -\rightarrow 0  anti-.

The Music of KOTO: K0_L -\rightarrow 0  anti-.

Effects of the fourth generation on $\Delta M_{B_{d,s}}$ in $B^0$ – $\bar B^0$ mixing

Simple approach to fourth generation effects inB→Xsl+
Solmaz¹
2004
Phys. Rev. D
11
0
1
0
View full text Add to dashboard Cite

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Effects of theK+→π+νν¯

Abstract: We analyze in the four-generation model the first measurement of the branching ratio of rare kaon decay K + → π + νν, along with the other processes of

Cited by 23 publications

References 44 publications

The Music of KOTO: K0_L -\rightarrow 0  anti-.

The Music of KOTO: K0_L -\rightarrow 0  anti-.

Effects of the fourth generation on $\Delta M_{B_{d,s}}$ in $B^0$ – $\bar B^0$ mixing

Simple approach to fourth generation effects inB→Xsl+Solmaz1 2004Phys. Rev. D11010View full textAdd to dashboardCite

Contact Info

Product

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About

Simple approach to fourth generation effects inB→Xsl+
Solmaz¹
2004
Phys. Rev. D
11
0
1
0
View full text Add to dashboard Cite