Effect of Z′-mediated flavor-changing neutral current on B → ππ decays

Sahoo, S.; Das, Chandan; Maharana, L.

doi:10.1134/s1063778811070131

Cited by 9 publications

(2 citation statements)

References 45 publications

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“…Various studies of the nonuniversal model have been done assuming diagonal as well as vanishing right-handed quark couplings with boson. It is observed that it can help to resolve the puzzles of rare B meson decays such as ̅ mixing phase [51], puzzle [50,52], puzzle [53,54], etc.…”

Section: The Non-universal Modelmentioning

confidence: 99%

Investigation of rare semileptonic decays with non-universal Z′ effect

et al. 2020

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We analyze different decay observables of semileptonic decays , such as the branching ratio, forward-backward asymmetry, polarization fraction, and lepton polarization asymmetry in the non-universal model. We further study the dependence of the branching fraction to the new model parameters and find that the values of different decay parameters increase in the model, which indicates a possible approach for the search of new physics as well as for the unknown phenomena of the charm B meson.

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Section: The Non-universal Modelmentioning

confidence: 99%

Investigation of rare semileptonic decays with non-universal Z′ effect

et al. 2020

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“…In the Z ′ sector, there has been a great deal of investigation to understand the underlying physics beyond the SM [37][38][39][40][41][42][43]. It has been shown that a leptophobic Z ′ boson can appear in 6 E gauge models due to mixing of gauge kinetic terms [44][45][46][47][48].…”

Section: Introductionmentioning

confidence: 99%

EFFECT OF BOTH Z AND Z′-MEDIATED FLAVOR-CHANGING NEUTRAL CURRENTS ON B_s →τ⁺τ^- DECAY

Sahoo

Banerjee

Kumar

et al. 2012

Int. J. Mod. Phys. A

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In recent years, Bs →τ+τ- rare decay has attracted a lot of attention since it is very sensitive to the structure of standard model (SM) and potential source of new physics beyond SM. In this paper, we study the effect of both Z and Z′-mediated flavor-changing neutral currents on the Bs →τ+τ- decay. We find the branching ratio B(Bs→τ+τ-) is enhanced relative to SM prediction, which would help to explain the recently observed CP-violation from like-sign dimuon charge asymmetry in the B system.

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$ B_s^0 - \overline B_s^0 $ mixing in a family non-universal Z′ model revisited

et al. 2012

J. High Energ. Phys.

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Motivated by the very recent measurements performed at the LHCb and the Tevatron of the B 0 s −B 0 s mixing, in this paper we revisit it in a family non-universal Z model, to check if a simultaneous explanation for all the mixing observables, especially for the likesign dimuon charge asymmetry observed by the D0 collaboration, could be made in such a specific model. In the first scenario where the Z boson contributes only to the off-diagonal element M s 12 , it is found that, once the combined constraints from ∆M s , φ s and ∆Γ s are imposed, the model could not explain the measured flavour-specific CP asymmetry a s f s , at least within its 1σ ranges. In the second scenario where the NP contributes also to the absorptive part Γ s 12 via tree-level Z -induced b → ccs operators, we find that, with the constraints from ∆M s , φ s and the indirect CP asymmetry inB d → J/ψK S taken into account, the present measured 1σ experimental ranges for a s f s could not be reproduced too. Thus, such a specific Z model with our specific assumptions could not simultaneously reconcile all the present data on B 0 s −B 0 s mixing. Future improved measurements from the LHCb and the proposed superB experiments, especially of the flavour-specific CP asymmetries, are expected to shed light on the issue.

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Effect of Z′-mediated flavor-changing neutral current on B → ππ decays

Abstract: We study the effect of Z ′ -mediated flavor-changing neutral current on the π π → B decays. The branching ratios of these decays can be enhanced remarkably in the nonuniversal Z ′ model. Our estimated branching ratios

Cited by 9 publications

References 45 publications

Investigation of rare semileptonic decays with non-universal Z′ effect

Investigation of rare semileptonic decays with non-universal Z′ effect

EFFECT OF BOTH Z AND Z′-MEDIATED FLAVOR-CHANGING NEUTRAL CURRENTS ON B_s →τ⁺τ^- DECAY

$ B_s^0 - \overline B_s^0 $ mixing in a family non-universal Z′ model revisited

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Effect of Z′-mediated flavor-changing neutral current on B → ππ decays

Abstract: We study the effect of Z ′ -mediated flavor-changing neutral current on the π π → B decays. The branching ratios of these decays can be enhanced remarkably in the nonuniversal Z ′ model. Our estimated branching ratios

Cited by 9 publications

References 45 publications

Investigation of rare semileptonic decays with non-universal Z′ effect

Investigation of rare semileptonic decays with non-universal Z′ effect

EFFECT OF BOTH Z AND Z′-MEDIATED FLAVOR-CHANGING NEUTRAL CURRENTS ON Bs →τ+τ- DECAY

$ B_s^0 - \overline B_s^0 $ mixing in a family non-universal Z′ model revisited

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Product

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About

EFFECT OF BOTH Z AND Z′-MEDIATED FLAVOR-CHANGING NEUTRAL CURRENTS ON B_s →τ⁺τ^- DECAY