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S Pokharel

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Articles 33
Citations 50
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Recent Articles
1.
Adachi I, Aggarwal L, Ahmed H, Aihara H, Akopov N, Aloisio A, et al.
Phys Rev Lett . 2025 Feb; 134(1):011802. PMID: 39913692
We report measurements of time-dependent CP asymmetries in B^{0}→K_{S}^{0}π^{0}γ decays based on a data sample of (388±6)×10^{6}  BB[over ¯] events collected at the ϒ(4S) resonance with the Belle II detector....
2.
Shakya S, Amatya S, Thapa S, Thapa P, Pokharel S
Kathmandu Univ Med J (KUMJ) . 2024 Sep; 22(85):123-126. PMID: 39324472
Complex regional pain syndrome is chronic pain condition involving hyperalgesia and allodynia of extremities. The pathophysiology of CRPS is thought to be combination of different factors that take place at...
3.
Adachi I, Aggarwal L, Aihara H, Akopov N, Aloisio A, Al Said S, et al.
Phys Rev Lett . 2024 Sep; 133(10):101804. PMID: 39303229
We present the results of a search for the b→dℓ^{+}ℓ^{-} flavor-changing neutral-current rare decays B^{+,0}→(η,ω,π^{+,0},ρ^{+,0})e^{+}e^{-} and B^{+,0}→(η,ω,π^{0},ρ^{+})μ^{+}μ^{-} using a 711  fb^{-1} data sample that contains 772×10^{6}  BB[over ¯] events. The...
4.
Adachi I, Adamczyk K, Aggarwal L, Ahmed H, Aihara H, Akopov N, et al.
Phys Rev Lett . 2024 Jun; 132(21):211804. PMID: 38856254
We measure the tau-to-light-lepton ratio of inclusive B-meson branching fractions R(X_{τ/ℓ})≡B(B→Xτν)/B(B→Xℓν), where ℓ indicates an electron or muon, and thereby test the universality of charged-current weak interactions. We select events...
5.
Adachi I, Adamczyk K, Aggarwal L, Aihara H, Akopov N, Aloisio A, et al.
Phys Rev Lett . 2023 Nov; 131(18):181801. PMID: 37977641
We present the first comprehensive tests of the universality of the light leptons in the angular distributions of semileptonic B^{0}-meson decays to charged spin-1 charmed mesons. We measure five angular-asymmetry...
6.
Adachi I, Aggarwal L, Aihara H, Akopov N, Aloisio A, Anh Ky N, et al.
Phys Rev Lett . 2023 Nov; 131(17):171803. PMID: 37955504
We measure the lifetime of the D_{s}^{+} meson using a data sample of 207  fb^{-1} collected by the Belle II experiment running at the SuperKEKB asymmetric-energy e^{+}e^{-} collider. The lifetime...
7.
Adachi I, Adamczyk K, Aggarwal L, Ahmed H, Aihara H, Akopov N, et al.
Phys Rev Lett . 2023 Oct; 131(12):121802. PMID: 37802942
We report the first search for a nonstandard-model resonance decaying into τ pairs in e^{+}e^{-}→μ^{+}μ^{-}τ^{+}τ^{-} events in the 3.6-10  GeV/c^{2} mass range. We use a 62.8  fb^{-1} sample of e^{+}e^{-}...
8.
Adachi I, Adamczyk K, Aggarwal L, Ahmed H, Aihara H, Akopov N, et al.
Phys Rev Lett . 2023 Sep; 131(11):111803. PMID: 37774261
We report a measurement of the CP-violating parameters C and S in B^{0}→K_{S}^{0}π^{0} decays at Belle II using a sample of 387×10^{6}  BB[over ¯] events recorded in e^{+}e^{-} collisions at...
9.
Aggarwal L, Ahmed H, Aihara H, Akopov N, Aloisio A, Anh Ky N, et al.
Phys Rev Lett . 2023 Aug; 131(5):051804. PMID: 37595249
We present the first measurement of the ratio of branching fractions of inclusive semileptonic B-meson decays, R(X_{e/μ})=B(B→Xeν)/B(B→Xμν), a precision test of electron-muon universality, using data corresponding to 189  fb^{-1} from...
10.
Adachi I, Adamczyk K, Aggarwal L, Ahmed H, Aihara H, Akopov N, et al.
Phys Rev Lett . 2023 Jun; 130(23):231801. PMID: 37354391
The L_{μ}-L_{τ} extension of the standard model predicts the existence of a lepton-flavor-universality-violating Z^{'} boson that couples only to the heavier lepton families. We search for such a Z^{'} through...