A. Pathak

activity

20182025

most citedSearch for Axion-Like Particles produced in

e^{+} e^{-}

collisions at Belle II

99 citations · 2.4k across the 239 of their papers we have counts for

collaborators

Showing 2023Show all

39 papers · 1 filter

hep-ex2023★ 40 cited

Determination of spin-parity quantum numbers of X(2370) as $0^{-+}$ from $J / ψ \to γ K_{S}^{0} K_{S}^{0} η^{'}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +616

Based on $(10087 \pm 44) \times 1 0^{6}$ $J / ψ$ events collected with the BESIII detector, a partial wave analysis of the decay $J / ψ \to γ K_{S}^{0} K_{S}^{0} η^{'}$ is performed…

hep-ex2023

Observation of the decay $J / ψ \to e^{+} e^{-} η (1405)$ with $η (1405) \to π^{0} f_{0} (980)$

BESIII Collaboration, M. Ablikim, M. N. Achasov +612

Using a data sample of $(10087 \pm 44) \times 1 0^{6}$ $J / ψ$ events collected by the BESIII detector in 2009, 2012, 2018 and 2019, the electromagnetic Dalitz process $J/ψ\to e^+ e^- η(14…

hep-ex2023

Studies of the decay $D_{s}^{+} \to K^{+} K^{-} μ^{+} ν_{μ}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +608

The $D_{s}^{+} \to K^{+} K^{-} μ^{+} ν_{μ}$ decay is studied based on 7.33 fb $^{- 1}$ of $e^{+} e^{-}$ collision data collected with the BESIII detector at center-of-mass energies in the range from 4.12…

hep-ex2023★ 43 cited

Measurement of the Energy-Dependent Electromagnetic Form Factors of a Charmed Baryon

BESIII Collaboration, M. Ablikim, M. N. Achasov +609

We study the process $e^{+} e^{-} \to Λ_{c}^{+} Λ ˉ_{c}^{-}$ at twelve center-of-mass energies from $4.6119$ to $4.9509 GeV$ using data samples collected by the BESIII detecto…

hep-ex2023

Measurement of $e^{+} e^{-} \to p K^{-} Λ ˉ + c . c .$ cross sections between 4.009 GeV and 4.951 GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +609

Using $e^{+} e^{-}$ collision datasets corresponding to total integrated luminosity of 21.7 fb $^{- 1}$ collected with the BESIII detector at the BEPCII collider at center-of-mass energie…

hep-ex2023★ 15 cited

Determination of the $Σ^{+}$ Timelike Electromagnetic Form Factors

BESIII Collaboration, M. Ablikim, M. N. Achasov +615

Based on data samples collected with the BESIII detector at the BEPCII collider, the process $e^{+} e^{-} \to Σ^{+} Σ ˉ^{-}$ is studied at center-of-mass energies $s$ = 2.39…

hep-ex2023★ 14 cited

Observation of $D_{s}^{+} \to η^{'} μ^{+} ν_{μ}$ , Precision Test of Lepton Flavor Universality with $D_{s}^{+} \to η^{(')} ℓ^{+} ν_{ℓ}$ , and First Measurements of $D_{s}^{+} \to η^{(')} μ^{+} ν_{μ}$ Decay Dynamics

BESIII Collaboration, M. Ablikim, M. N. Achasov +596

By analyzing 7.33 fb $^{- 1}$ of $e^{+} e^{-}$ annihilation data collected at center-of-mass energies between 4.128 and 4.226 GeV with the BESIII detector, we report the observation of th…

hep-ex2023★ 4 cited

First Observation of a Three-Resonance Structure in $e^{+} e^{-} \to$ Nonopen Charm Hadrons

BESIII Collaboration, M. Ablikim, M. N. Achasov +619

We report the measurement of the inclusive cross sections for $e^{+} e^{-}$ $\to$ nOCH (where nOCH denotes non-open charm hadrons) with improved precision at center-of-mass (c.m.)…

hep-ex2023★ 5 cited

Precise measurement of the branching fractions of $J / ψ \to Λ ˉ π^{+} Σ^{-} + c . c .$ and $J / ψ \to Λ ˉ π^{-} Σ^{+} + c . c .$

BESIII Collaboration, M. Ablikim, M. N. Achasov +610

Based on a data sample of $(10087 \pm 44) \times 1 0^{6}$ $J / ψ$ events collected with the BESIII detector, the branching fraction of $J / ψ \to Λ ˉ π^{+} Σ^{-} + c . c .$ is measured to be…

hep-ex2023★ 16 cited

Precision Measurements of $D_{s}^{+} \to η e^{+} ν_{e}$ and $D_{s}^{+} \to η^{'} e^{+} ν_{e}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +602

Precision measurements of the semileptonic decays $D_{s}^{+} \to η e^{+} ν_{e}$ and $D_{s}^{+} \to η^{'} e^{+} ν_{e}$ are performed with 7.33\,fb $^{- 1}$ of $e^{+} e^{-}$ collision data collected at c…

hep-ex2023★ 27 cited

First study of reaction $Ξ^{0} n \to Ξ^{-} p$ using $Ξ^{0}$ -nucleus scattering at an electron-positron collider

BESIII Collaboration, M. Ablikim, M. N. Achasov +604

Using $(1.0087 \pm 0.0044) \times 1 0^{10}$ $J / ψ$ events collected with the BESIII detector at the BEPCII storage ring, the process $Ξ^{0} n \to Ξ^{-} p$ is studied, where the $Ξ^{0}$ …

hep-ex2023

Determination of spin and parity of $D_{(s)}^{*}$ mesons

BESIII Collaboration, M. Ablikim, M. N. Achasov +611

The spin and parity of the charmed mesons $D_{s}^{*+}$ , $D^{* 0}$ and $D^{*+}$ are determined for the first time to be $J^{P} = 1^{-}$ with significances greater than 10 $σ$ over other h…

hep-ex2023

Precise measurement of the $e^{+} e^{-} \to D_{s}^{+} D_{s}^{-}$ cross sections at center-of-mass energies from threshold to 4.95 GeV

BESIII Collaboration

The process $e^{+} e^{-} \to D_{s}^{*+} D_{s}^{*-}$ is studied with a semi-inclusive method using data samples at center-of-mass energies from threshold to 4.95 GeV coll…

hep-ex2023

Search for lepton-flavor-violating $τ^{-} \to ℓ^{-} ϕ$ decays in 2019-2021 Belle II data

Belle II Collaboration, F. Abudinén, I. Adachi +575

We report a search for lepton-flavor-violating decays $τ^{-} \to ℓ^{-} ϕ$ ( $ℓ^{-} = e^{-}, μ^{-}$ ) at the Belle II experiment, using a sample of electron-positron data produced at the Su…

hep-ex2023★ 3 cited

Search for baryon and lepton number violating decays of $Ξ^{0}$ hyperons

BESIII Collaboration, M. Ablikim, M. N. Achasov +602

Using $(1.0087 \pm 0.0044) \times 1 0^{10}$ $J / ψ$ events collected by the BESIII detector at the BEPCII collider, we report the first search for the baryon and lepton number violating d…

hep-ex2023★ 4 cited

Determination of the $C P$ -even fraction of $D^{0} \to K_{S}^{0} π^{+} π^{-} π^{0}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +608

Quantum-correlated $D D ˉ$ pairs collected by the BESIII experiment at the $ψ (3770)$ resonance, corresponding to an integrated luminosity of 2.93 fb $^{- 1}$ , are used to study th…

hep-ex2023

Production of doubly-charged $Δ$ baryon in $e^{+} e^{-}$ annihilation at energies from 2.3094 to 2.6464 GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +591

The processes $e^{+} e^{-} \to Δ^{++} Δ ˉ^{--}$ and $e^{+} e^{-} \to Δ^{++} p ˉ π^{-} + c . c .$ are studied for the first time with $179 pb^{- 1}$ of $e^{+} e^{-}$ annihilation…

hep-ex2023

Search for a scalar partner of the $X (3872)$ via $ψ (3770)$ decays into $γ η η^{'}$ and $γ π^{+} π^{-} J / ψ$

BESIII Collaboration, M. Ablikim, M. N. Achasov +609

Using a data sample corresponding to an integrated luminosity of 2.93 fb $^{- 1}$ collected at a center-of-mass energy of 3.773~GeV with the BESIII detector at the BEPCII collider, w…

hep-ex2023★ 45 cited

Tests of $C P$ symmetry in the entangled $Ξ^{0} - Ξ ˉ^{0}$ Pairs

BESIII Collaboration, M. Ablikim, M. N. Achasov +609

The $J / ψ \to Ξ^{0} Ξ ˉ^{0}$ process and subsequent decays are investigated using $(10087 \pm 44) \times 1 0^{6}$ $J / ψ$ events collected at the BESIII experiment. The decay parameters of…

hep-ex2023★ 7 cited

Search for $Λ ˉ$ - $Λ$ oscillations in the decay $J / ψ \to p K^{-} Λ ˉ + c . c .$

BESIII Collaboration, M. Ablikim, M. N. Achasov +454

We report the first search for $Λ ˉ$ -- $Λ$ oscillations in the decay $J / ψ \to p K^{-} Λ ˉ + c . c .$ by analyzing $1.31 \times 1 0^{9}$ $J / ψ$ events accumulated with the BESIII detector at…

hep-ex2023★ 17 cited

Test of $C P$ Symmetry in Hyperon to Neutron Decays

BESIII Collaboration, M. Ablikim, M. N. Achasov +608

The quantum entangled $J / ψ \to Σ^{+} Σ ˉ^{-}$ pairs from $(1.0087 \pm 0.0044) \times 1 0^{10}$ $J / ψ$ events taken by the BESIII detector are used to study the non-leptonic two-body weak…

hep-ex2023

First Experimental Study of the Purely Leptonic Decay $D_{s}^{*+} \to e^{+} ν_{e}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +615

Using $7.33 fb^{- 1}$ of $e^{+} e^{-}$ collision data taken with the BESIII detector at the BEPCII collider, we report the first experimental study of the purely leptonic decay…

hep-ex2023★ 3 cited

Cross section measurements of $e^{+} e^{-} \to Φ K^{+} K^{-}$ and $e^{+} e^{-} \to Φ K_{S}^{0} K_{S}^{0}$ at center-of-mass energies between 3.7730 GeV and 4.7008 GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +611

Based on 22.7 fb $^{- 1}$ of $e^{+} e^{-}$ annihilation data collected at 33 different center-of-mass energies between 3.7730 GeV and 4.7008 GeV with the BESIII detector at the BEPCII col…

hep-ex2023★ 4 cited

Measurement of branching fractions of $Λ_{c}^{+}$ decays to $Σ^{+} K^{+} K^{-}$ , $Σ^{+} ϕ$ and $Σ^{+} K^{+} π^{-} (π^{0})$

BESIII Collaboration, M. Ablikim, M. N. Achasov +612

Based on 4.5 fb $^{- 1}$ data taken at seven center-of-mass energies ranging from 4.600 to 4.699 GeV with the BESIII detector at the BEPCII collider, we measure the branching fractio…

Determination of spin-parity quantum numbers of X(2370) as 0−+ from J/ψ→γKS0​KS0​η′

Observation of the decay J/ψ→e+e−η(1405) with η(1405)→π0f0​(980)

Studies of the decay Ds+​→K+K−μ+νμ​

Measurement of the Energy-Dependent Electromagnetic Form Factors of a Charmed Baryon

Measurement of e+e−→pK−Λˉ+c.c. cross sections between 4.009 GeV and 4.951 GeV

Determination of the Σ+ Timelike Electromagnetic Form Factors

Observation of Ds+​→η′μ+νμ​, Precision Test of Lepton Flavor Universality with Ds+​→η(′)ℓ+νℓ​, and First Measurements of Ds+​→η(′)μ+νμ​ Decay Dynamics

First Observation of a Three-Resonance Structure in e+e−→Nonopen Charm Hadrons

Precise measurement of the branching fractions of J/ψ→Λˉπ+Σ−+c.c. and J/ψ→Λˉπ−Σ++c.c.

Precision Measurements of Ds+​→ηe+νe​ and Ds+​→η′e+νe​

First study of reaction Ξ0n→Ξ−p using Ξ0-nucleus scattering at an electron-positron collider

Determination of spin and parity of D(s)∗​ mesons

Precise measurement of the e+e−→Ds∗+​Ds∗−​ cross sections at center-of-mass energies from threshold to 4.95 GeV

Search for lepton-flavor-violating τ−→ℓ−ϕ decays in 2019-2021 Belle II data

Search for baryon and lepton number violating decays of Ξ0 hyperons

Determination of the CP-even fraction of D0→KS0​π+π−π0

Production of doubly-charged Δ baryon in e+e− annihilation at energies from 2.3094 to 2.6464 GeV

Search for a scalar partner of the X(3872) via ψ(3770) decays into γηη′ and γπ+π−J/ψ

Tests of CP symmetry in the entangled Ξ0−Ξˉ0 Pairs

Search for Λˉ-Λ oscillations in the decay J/ψ→pK−Λˉ+c.c.

Test of CP Symmetry in Hyperon to Neutron Decays

First Experimental Study of the Purely Leptonic Decay Ds∗+​→e+νe​

Cross section measurements of e+e−→ΦK+K− and e+e−→ΦKS0​KS0​ at center-of-mass energies between 3.7730 GeV and 4.7008 GeV

Measurement of branching fractions of Λc+​ decays to Σ+K+K−, Σ+ϕ and Σ+K+π−(π0)

Determination of spin-parity quantum numbers of X(2370) as $0^{-+}$ from $J / ψ \to γ K_{S}^{0} K_{S}^{0} η^{'}$

Observation of the decay $J / ψ \to e^{+} e^{-} η (1405)$ with $η (1405) \to π^{0} f_{0} (980)$

Studies of the decay $D_{s}^{+} \to K^{+} K^{-} μ^{+} ν_{μ}$

Measurement of $e^{+} e^{-} \to p K^{-} Λ ˉ + c . c .$ cross sections between 4.009 GeV and 4.951 GeV

Determination of the $Σ^{+}$ Timelike Electromagnetic Form Factors

Observation of $D_{s}^{+} \to η^{'} μ^{+} ν_{μ}$ , Precision Test of Lepton Flavor Universality with $D_{s}^{+} \to η^{(')} ℓ^{+} ν_{ℓ}$ , and First Measurements of $D_{s}^{+} \to η^{(')} μ^{+} ν_{μ}$ Decay Dynamics

First Observation of a Three-Resonance Structure in $e^{+} e^{-} \to$ Nonopen Charm Hadrons

Precise measurement of the branching fractions of $J / ψ \to Λ ˉ π^{+} Σ^{-} + c . c .$ and $J / ψ \to Λ ˉ π^{-} Σ^{+} + c . c .$

Precision Measurements of $D_{s}^{+} \to η e^{+} ν_{e}$ and $D_{s}^{+} \to η^{'} e^{+} ν_{e}$

First study of reaction $Ξ^{0} n \to Ξ^{-} p$ using $Ξ^{0}$ -nucleus scattering at an electron-positron collider

Determination of spin and parity of $D_{(s)}^{*}$ mesons

Precise measurement of the $e^{+} e^{-} \to D_{s}^{+} D_{s}^{-}$ cross sections at center-of-mass energies from threshold to 4.95 GeV

Search for lepton-flavor-violating $τ^{-} \to ℓ^{-} ϕ$ decays in 2019-2021 Belle II data

Search for baryon and lepton number violating decays of $Ξ^{0}$ hyperons

Determination of the $C P$ -even fraction of $D^{0} \to K_{S}^{0} π^{+} π^{-} π^{0}$

Production of doubly-charged $Δ$ baryon in $e^{+} e^{-}$ annihilation at energies from 2.3094 to 2.6464 GeV

Search for a scalar partner of the $X (3872)$ via $ψ (3770)$ decays into $γ η η^{'}$ and $γ π^{+} π^{-} J / ψ$

Tests of $C P$ symmetry in the entangled $Ξ^{0} - Ξ ˉ^{0}$ Pairs

Search for $Λ ˉ$ - $Λ$ oscillations in the decay $J / ψ \to p K^{-} Λ ˉ + c . c .$

Test of $C P$ Symmetry in Hyperon to Neutron Decays

First Experimental Study of the Purely Leptonic Decay $D_{s}^{*+} \to e^{+} ν_{e}$

Cross section measurements of $e^{+} e^{-} \to Φ K^{+} K^{-}$ and $e^{+} e^{-} \to Φ K_{S}^{0} K_{S}^{0}$ at center-of-mass energies between 3.7730 GeV and 4.7008 GeV

Measurement of branching fractions of $Λ_{c}^{+}$ decays to $Σ^{+} K^{+} K^{-}$ , $Σ^{+} ϕ$ and $Σ^{+} K^{+} π^{-} (π^{0})$