Branching ratios and CP-violating asymmetries in exclusive charged B-meson decays

If the fourth generation fermions exist, the new quarks could influence the branching ratios of the decays of B→Xsγ and B→Xsl+l-. We obtain two solutions of the fourth generation CKM factor [Formula: see text] from the decay of B→ Xsγ. We use these two solutions to calculate the new contributions of the fourth generation quark to Wilson coefficients of the decay of B→ Xsl+l-. The branching ratio and the forward–backward asymmetry of the decay of B→ Xsl+l- in the two cases are calculated. Our results are quite different from that of SM in one case, almost the same in another case. If Nature chooses the former, the B meson decays could provide a possible test of the fourth generation existence.

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A SEARCH FOR B→τν

International Journal of Modern Physics A ◽

10.1142/s0217751x01007662 ◽

2001 ◽

Vol 16 (supp01b) ◽

pp. 636-638 ◽

Cited By ~ 1

Author(s):

◽

JOHN GREGG THAYER

Keyword(s):

Confidence Level ◽

B Meson ◽

Branching Fraction ◽

Slight Modification ◽

B Meson Decays ◽

Meson Decays ◽

Decay Modes ◽

Upper Limit ◽

Charged B Meson

We report results of a search for B→τν in a sample of 9.7 million charged B meson decays. The search uses both πν and [Formula: see text] decay modes of the τ, and demands exclusive reconstruction of the companion [Formula: see text] decay to suppress background. We set an upper limit on the branching fraction ℬ(B→τν)<8.4×10-4 at 90% confidence level. With slight modification to the analysis we also establish [Formula: see text] at 90% confidence level.

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Effect of Magnetic Fields on Charged B Meson Decays

Journal of Nuclear Physics Material Sciences Radiation and Applications ◽

10.15415/jnp.2020.81010 ◽

2020 ◽

Vol 8 (1) ◽

pp. 79-83

Author(s):

Sukadev Sahoo ◽

M. Kumar

Keyword(s):

Magnetic Field ◽

Magnetic Fields ◽

Decay Rate ◽

B Meson ◽

Leptonic Decay ◽

B Meson Decays ◽

Meson Decays ◽

Charged B Meson

The effect of magnetic fields on the leptonic decay of charged B meson B− → l-v- is investigated. The decay rate of the process is calculated both in the absence and presence of magnetic field. The non-perturbative parameters fB± (B), f'B± and MB±(B) are also estimated.

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Search for an X(3872) charged partner in the decay mode X- --> J/psi pi- pi0 in the B meson decays B0 --> X- K+ and B- --> X- Ks

10.2172/829787 ◽

2004 ◽

Author(s):

B Aubert

Keyword(s):

Decay Mode ◽

B Meson ◽

B Meson Decays ◽

Meson Decays

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Lepton flavor non-universality in B-meson decays from a U(2) flavor model

Journal of High Energy Physics ◽

10.1007/jhep11(2015)173 ◽

2015 ◽

Vol 2015 (11) ◽

Cited By ~ 67

Author(s):

Adam Falkowski ◽

Marco Nardecchia ◽

Robert Ziegler

Keyword(s):

B Meson ◽

B Meson Decays ◽

Meson Decays ◽

Lepton Flavor

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|Vub| Determination by B → Dsπ

Modern Physics Letters A ◽

10.1142/s021773230301137x ◽

2003 ◽

Vol 18 (22) ◽

pp. 1557-1567 ◽

Cited By ~ 3

Author(s):

Hideaki Hayakawa ◽

Kaoru Hosokawa ◽

Takeshi Kurimoto

Keyword(s):

Perturbative Qcd ◽

B Meson ◽

B Meson Decays ◽

Meson Decays ◽

Factorizable Contribution

We investigate [Formula: see text] decay in perturbative QCD approach which has recently been applied to B-meson decays. [Formula: see text] decay (and its charge conjugated mode) can be one of the hopeful modes to determine |Vub| since it occurs through b → u transition only. We estimate both factorizable and non-factorizable contribution, and show that the non-factorizable contribution is much less than the factorizable one. Our calculation gives [Formula: see text].

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