S. Nisar

activity

20132023

e^{+} e^{-} \to π^{+} π^{-}

Cross Section between 600 and 900 MeV Using Initial State Radiation

253 citations · 739 across the 20 of their papers we have counts for

collaborators

20 papers

hep-ex2023★ 12 cited

Measurement of $e^{+} e^{-} \to η J / ψ$ Cross Section from $s =$ 3.808 GeV to 4.951 GeV

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

Using data samples with an integrated luminosity of 22.42 fb $^{- 1}$ collected by the BESIII detector operating at the BEPCII storage ring, we measure the cross sections of the $e^{…

hep-ex2022

Measurement of the $e^{+} e^{-} \to π^{+} π^{-} J / ψ$ cross section in the vicinity of 3.872 GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +566

We report a measurement of the cross section for the process $e^{+} e^{-} \to π^{+} π^{-} J / ψ$ around the $X (3872)$ mass in search for the direct formation of $e^{+} e^{-} \to X (3872)$ through the tw…

hep-ex2021★ 11 cited

First Measurement of the Absolute Branching Fraction of $Λ \to p μ^{-} ν ˉ_{μ}$

M. Ablikim, M. N. Achasov, P. Adlarson +504

The absolute branching fraction of $Λ \to p μ^{-} ν ˉ_{μ}$ is reported for the first time based on an $e^{+} e^{-}$ annihilation sample of ten billion $J / ψ$ events collected with the BESII…

hep-ex2021★ 10 cited

Amplitude analysis and branching-fraction measurement of $D_{s}^{+} \to K_{S}^{0} K^{-} π^{+} π^{+}$

BESIII Collaboration

Using 6.32 fb $^{- 1}$ of $e^{+} e^{-}$ collision data collected by the BESIII detector at the center-of-mass energies between 4.178 and 4.226 GeV,~an amplitude analysis of the $D^{+}_{s}…

hep-ex2021★ 3 cited

Study of $e^{+} e^{-} \to π^{0} X (3872) γ$ and search for $Z_{c} (4020)^{0} \to X (3872) γ$

M. Ablikim, M. N. Achasov, P. Adlarson +505

Using data samples collected with the BESIII detector operating at the BEPCII storage ring at center-of-mass energies from 4.178 to 4.600 GeV, we study the process $e^+e^-\rightarr…

hep-ex2020★ 4 cited

Search for New Hadronic Decays of $h_{c}$ and Observation of $h_{c} \to K^{+} K^{-} π^{+} π^{-} π^{0}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +493

Ten hadronic final states of the $h_{c}$ decays are investigated via the process $ψ (3686) \to π^{0} h_{c}$ , using a data sample of $(448.1 \pm 2.9) \times 1 0^{6}$ $ψ (3686)$ events c…

hep-ex2020★ 60 cited

Measurements of Sigma+ and Sigma- Time-like Electromagnetic Form Factors for center-of-mass energies from 2.3864 to 3.0200 GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +494

The Born cross sections of the $e^{+} e^{-} \to Σ^{+} Σ ˉ^{-}$ and $e^{+} e^{-} \to Σ^{-} Σ ˉ^{+}$ processes are determined with high precision for center-of-mass energy from 2.3864 to…

hep-ex2020★ 22 cited

First Observation of $D^{+} \to η μ^{+} ν_{μ}$ and Measurement of its Decay Dynamics

BESIII Collaboration

By analyzing 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, we measu…

hep-ex2020★ 20 cited

Observation of the semi-muonic decay $D^{+} \to ω μ^{+} ν_{μ}$

BESIII Collaboration

We report the first observation of the semi-muonic decay $D^{+} \to ω μ^{+} ν_{μ}$ using an $e^{+} e^{-}$ collision data sample corresponding to an integrated luminosity of $2.93~\mathrm{fb}^{-1…

hep-ex2019★ 34 cited

Observation of the leptonic decay $D^{+} \to τ^{+} ν_{τ}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +479

We report the first observation of $D^{+} \to τ^{+} ν_{τ}$ with a significance of $5.1 σ$ . We measure ${\cal B}(D^+\toτ^+ν_τ) = (1.20\pm0.24_{\text{stat.}}\pm0.12_{\text{syst.}})\times10^{-3…

hep-ex2019★ 96 cited

Measurement of proton electromagnetic form factors in $e^{+} e^{-} \to p p ˉ$ in the energy region 2.00-3.08 GeV

M. Ablikim, M. N. Achasov, P. Adlarson +473

The process of $e^{+} e^{-} \to p p ˉ$ is studied at 22 center-of-mass energy points ( $s$ ) from 2.00 to 3.08 GeV, exploiting 688.5~pb $^{- 1}$ of data collected with the…

hep-ex2019★ 47 cited

Observation of the decay $X (3872) \to π^{0} χ_{c 1} (1 P)$

BESIII Collaboration, M. Ablikim, M. N. Achasov +468

Using a total of $9.0 fb^{- 1}$ of $e^{+} e^{-}$ collision data with center-of-mass energies between 4.15 and 4.30 GeV collected by the BESIII detector, we search for the proces…

hep-ex2018★ 9 cited

Precision measurements of $σ_{B} (e^{+} e^{-} \to K_{S}^{0} K^{\pm} π^{\mp})$ at center-of-mass energies between 3.8 and 4.6 GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +444

Using data samples collected by the BESIII detector operating at the BEPCII storage ring, we measure the $e^{+} e^{-} \to K_{S}^{0} K^{\pm} π^{\mp}$ Born cross sections at center-of-mass…

hep-ex2018★ 37 cited

Observation of $a_{0}^{0} (980)$ - $f_{0} (980)$ Mixing

M. Ablikim, M. N. Achasov, S. Ahmed +436

We report the first observation of $a_{0}^{0} (980)$ - $f_{0} (980)$ mixing in the decays of $J / ψ \to ϕ f_{0} (980) \to ϕ a_{0}^{0} (980) \to ϕ η π^{0}$ and $χ_{c1}\to a^{0}_{0}(980)π^{0}\to f_{0}…

hep-ex2017★ 16 cited

Observation of $ψ (3686) \to e^{+} e^{-} χ_{c J}$ and $χ_{c J} \to e^{+} e^{-} J / ψ$

M. Ablikim, M. N. Achasov, X. C. Ai +420

Using $4.479 \times 1 0^{8}$ $ψ (3686)$ events collected with the BESIII detector, we search for the decays $ψ (3686) \to e^{+} e^{-} χ_{c 0, 1, 2}$ and $χ_{c0,1,2} \rightarrow e^{…

hep-ex2016★ 7 cited

Measurements of the branching fractions for $D^{+} \to K_{S}^{0} K_{S}^{0} K^{+}$ , $K_{S}^{0} K_{S}^{0} π^{+}$ and $D^{0} \to K_{S}^{0} K_{S}^{0}$ , $K_{S}^{0} K_{S}^{0} K_{S}^{0}$

M. Ablikim, M. N. Achasov, S. Ahmed +428

By analyzing $2.93 f b^{- 1}$ of data taken at the $ψ (3770)$ resonance peak with the BESIII detector, we measure the branching fractions for the hadronic decays $D^+\to K^0_SK^0…

hep-ex2015★ 80 cited

Observation of a Neutral Structure near the $D D ˉ^{}$ Mass Threshold in $e^{+} e^{-} \to (D D ˉ^{})^{0} π^{0}$ at $s$ = 4.226 and 4.257 GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +400

A neutral structure in the $D D ˉ^{*}$ system around the $D D ˉ^{*}$ mass threshold is observed with a statistical significance greater than 10 $σ$ in the processes $e^{+}e^{-…

hep-ex2015★ 253 cited

Measurement of the $e^{+} e^{-} \to π^{+} π^{-}$ Cross Section between 600 and 900 MeV Using Initial State Radiation

M. Ablikim, M. N. Achasov, X. C. Ai +398

We extract the $e^{+} e^{-} \to π^{+} π^{-}$ cross section in the energy range between 600 and 900 MeV, exploiting the method of initial state radiation. A data set with an integrated…

hep-ex2014★ 4 cited

Search for C-parity violation in $J / ψ \to γ γ$ and $γ ϕ$

BESIII Collaboration, M. Ablikim, M. N. Achasov +391

Using $1.06 \times 1 0^{8}$ $ψ (3686)$ events recorded in $e^{+} e^{-}$ collisions at $s =$ 3.686 GeV with the BESIII at the BEPCII collider, we present searches for C-parity violat…

hep-ex2013★ 14 cited

Search for the $η_{c} (2 S) / h_{c} \to p p ˉ$ decays and measurements of the $χ_{c J} \to p p ˉ$ branching fractions

BESlll Collaboration, M. Ablikim, M. N. Achasov +374

Using a sample of $1.06 \times 1 0^{8} ψ (3686)$ events collected with the BESIII detector at BEPCII, the decays $η_{c} (2 S) \to p p ˉ$ and $h_{c} \to p p ˉ$ are searched for, where…

Measurement of e+e−→ηJ/ψ Cross Section from s​= 3.808 GeV to 4.951 GeV

Measurement of the e+e−→π+π−J/ψ cross section in the vicinity of 3.872 GeV

First Measurement of the Absolute Branching Fraction of Λ→pμ−νˉμ​

Amplitude analysis and branching-fraction measurement of Ds+​→KS0​K−π+π+

Study of e+e−→π0X(3872)γ and search for Zc​(4020)0→X(3872)γ

Search for New Hadronic Decays of hc​ and Observation of hc​→K+K−π+π−π0

Measurements of Sigma+ and Sigma- Time-like Electromagnetic Form Factors for center-of-mass energies from 2.3864 to 3.0200 GeV

First Observation of D+→ημ+νμ​ and Measurement of its Decay Dynamics

Observation of the semi-muonic decay D+→ωμ+νμ​

Observation of the leptonic decay D+→τ+ντ​

Measurement of proton electromagnetic form factors in e+e−→ppˉ​ in the energy region 2.00-3.08 GeV

Observation of the decay X(3872)→π0χc1​(1P)

Precision measurements of σB​(e+e−→KS0​K±π∓) at center-of-mass energies between 3.8 and 4.6 GeV

Observation of a00​(980)-f0​(980) Mixing

Observation of ψ(3686)→e+e−χcJ​ and χcJ​→e+e−J/ψ

Measurements of the branching fractions for D+→KS0​KS0​K+, KS0​KS0​π+ and D0→KS0​KS0​, KS0​KS0​KS0​

Observation of a Neutral Structure near the DDˉ∗ Mass Threshold in e+e−→(DDˉ∗)0π0 at s​ = 4.226 and 4.257 GeV

Measurement of the e+e−→π+π− Cross Section between 600 and 900 MeV Using Initial State Radiation

Search for C-parity violation in J/ψ→γγ and γϕ

Search for the ηc​(2S)/hc​→ppˉ​ decays and measurements of the χcJ​→ppˉ​ branching fractions

Measurement of $e^{+} e^{-} \to η J / ψ$ Cross Section from $s =$ 3.808 GeV to 4.951 GeV

Measurement of the $e^{+} e^{-} \to π^{+} π^{-} J / ψ$ cross section in the vicinity of 3.872 GeV

First Measurement of the Absolute Branching Fraction of $Λ \to p μ^{-} ν ˉ_{μ}$

Amplitude analysis and branching-fraction measurement of $D_{s}^{+} \to K_{S}^{0} K^{-} π^{+} π^{+}$

Study of $e^{+} e^{-} \to π^{0} X (3872) γ$ and search for $Z_{c} (4020)^{0} \to X (3872) γ$

Search for New Hadronic Decays of $h_{c}$ and Observation of $h_{c} \to K^{+} K^{-} π^{+} π^{-} π^{0}$

First Observation of $D^{+} \to η μ^{+} ν_{μ}$ and Measurement of its Decay Dynamics

Observation of the semi-muonic decay $D^{+} \to ω μ^{+} ν_{μ}$

Observation of the leptonic decay $D^{+} \to τ^{+} ν_{τ}$

Measurement of proton electromagnetic form factors in $e^{+} e^{-} \to p p ˉ$ in the energy region 2.00-3.08 GeV

Observation of the decay $X (3872) \to π^{0} χ_{c 1} (1 P)$

Precision measurements of $σ_{B} (e^{+} e^{-} \to K_{S}^{0} K^{\pm} π^{\mp})$ at center-of-mass energies between 3.8 and 4.6 GeV

Observation of $a_{0}^{0} (980)$ - $f_{0} (980)$ Mixing

Observation of $ψ (3686) \to e^{+} e^{-} χ_{c J}$ and $χ_{c J} \to e^{+} e^{-} J / ψ$

Measurements of the branching fractions for $D^{+} \to K_{S}^{0} K_{S}^{0} K^{+}$ , $K_{S}^{0} K_{S}^{0} π^{+}$ and $D^{0} \to K_{S}^{0} K_{S}^{0}$ , $K_{S}^{0} K_{S}^{0} K_{S}^{0}$

Observation of a Neutral Structure near the $D D ˉ^{}$ Mass Threshold in $e^{+} e^{-} \to (D D ˉ^{})^{0} π^{0}$ at $s$ = 4.226 and 4.257 GeV

Measurement of the $e^{+} e^{-} \to π^{+} π^{-}$ Cross Section between 600 and 900 MeV Using Initial State Radiation

Search for C-parity violation in $J / ψ \to γ γ$ and $γ ϕ$

Search for the $η_{c} (2 S) / h_{c} \to p p ˉ$ decays and measurements of the $χ_{c J} \to p p ˉ$ branching fractions