National University of Sciences and Technology

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20012026

most citedReconstruction of some cosmological models in f(R,T) gravity

376 citations

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hep-ph2026

Weak Annihilation Contribution to Angular Observables in $B_{c}^{+} \to D^{*+} ℓ^{+} ℓ^{-}$ Decays

Zohaib Aarfi, Qazi Maaz Us Salam, Ishtiaq Ahmed +2

We analyze the rare semileptonic decays $B_{c}^{+} \to D^{*+} (\to P_{1} P_{2}) ℓ^{+} ℓ^{-}$ , with $P_{1} P_{2} = D^{+} π^{0}$ or $D^{0} π^{+}$ , and $ℓ = μ, τ$ . We focus on the impact of weak…

hep-ph2025★ 4 cited

Investigating New Physics through the Observables of Semileptonic $B_{s} \to K^{*} (\to K π) μ^{+} μ^{-}$ Decay

Zohaib Aarfi, Qazi Maaz Us Salam, Ishtiaq Ahmed +3

The rare four-fold decay $B_{s} \to K^{*} (\to K π) μ^{+} μ^{-}$ , governed by the flavor-changing neutral current transition $b \to d μ^{+} μ^{-}$ , provides a sensitive probe for testing the Standa…

hep-ph2024

Polarized and un-polarized $R_{K^{*}}$ in and beyond the SM

Ishtiaq Ahmed, Saba Shafaq, M. Jamil Aslam +1

The Standard Model (SM) is lepton flavor universal, and the recent measurements of lepton flavor universality in $B \to (K, K^{*}) ℓ^{+} ℓ^{-}$ , for $ℓ = μ, e$ , decays now l…

hep-ph2024

Dark energy from non-degenerate Higgs-vacuum

Muhammad Usman, Asghar Qadir

Scalar fields are favorite among the possible candidates for the dark energy. Most frequently discussed are those with degenerate minima at $\pm ϕ_{min}$ . In this paper, a slightly…

hep-ph2024★ 2 cited

Semileptonic $W$ Decay to the $B$ Meson with Lepton Pairs in Heavy Quark Effective Theory Factorization upto $O$ $(α_{s})$

Saadi Ishaq, Sajawal Zafar, Abdur Rehman +1

Motivated by the study of heavy-light meson production within the framework of heavy quark effective theory (HQET) factorization, we extend the factorization formalism for a rather…

hep-ph2023★ 10 cited

Footprints of New Physics in the angular distribution of $B_{c} \to D_{s}^{*} (\to D_{s} γ, (D_{s} π)) ℓ^{+} ℓ^{-}$ decays

Marwah Zaki, M. Ali Paracha, Faisal Munir Bhutta

We investigate the angular decay distribution of the four-fold $B_{c} \to D_{s}^{*} (\to D_{s} γ) μ^{+} μ^{-}$ , and $B_{c} \to D_{s}^{*} (\to D_{s} π) μ^{+} μ^{-}$ decays that proceed…

Weak Annihilation Contribution to Angular Observables in Bc+​→D∗+ℓ+ℓ− Decays

Investigating New Physics through the Observables of Semileptonic Bs​→K∗(→Kπ)μ+μ− Decay

Polarized and un-polarized RK∗​ in and beyond the SM