L. Kardapoltsev

activity

20132025

e^{+} e^{-} \to n n ˉ

at the VEPP-2000

e^{+} e^{-}

collider with the SND detector

87 citations · 459 across the 25 of their papers we have counts for

collaborators

27 papers

hep-ph2025

NGAMMA: A Monte Carlo generator for multiphoton production in $e^{+} e^{-}$ annihilation

L. V. Kardapoltsev, N. A. Melnikova

We present the NGAMMA Monte Carlo event generator for QED processes of $e^{+} e^{-}$ annihilation into a multiphoton final state, $e^{+} e^{-} \to N γ (N \geq 2)$ . These processes are an importa…

hep-ex2024

Cross section of the process $e^{+} e^{-} \to n n ˉ$ near the threshold

M. N. Achasov, A. Yu. Barnyakov, E. V. Bedarev +33

The $e^{+} e^{-} \to n n ˉ$ cross section was measured at center of mass (c.m.) energies from the threshold to 1908 MeV. The experiment to measure the cross section has been carried o…

hep-ex2024

Search for the process $e^{+} e^{-} \to η^{'} γ$ in the energy range $s$ = 1.075 -- 2 GeV

M. N. Achasov, A. Yu. Barnyakov, E. V. Bedarev +34

The results of the search for the $e^{+} e^{-} \to η^{'} γ$ process in the center-of-mass energy range from 1.075 to 2 GeV are presented. We analyze data with an integral luminosity o…

physics.ins-det2023★ 23 cited

Autoencoder-based Anomaly Detection System for Online Data Quality Monitoring of the CMS Electromagnetic Calorimeter

The CMS ECAL Collaboration

The CMS detector is a general-purpose apparatus that detects high-energy collisions produced at the LHC. Online Data Quality Monitoring of the CMS electromagnetic calorimeter is a…

hep-ex2023

Study of the process $e^{+} e^{-} \to ω π^{0} \to π^{+} π^{-} π^{0} π^{0}$ in the energy range $1.05 - 2.00$ GeV with SND

SND Collaboration, M. N. Achasov, A. Yu. Barnyakov +34

The process $e^{+} e^{-} \to ω π^{0} \to π^{+} π^{-} π^{0} π^{0}$ is studied in the center-of-mass energy region $1.05 - 2.00$ GeV using data with an integral luminosity of about 35 pb $^{- 1}$ collected…

hep-ex2023★ 2 cited

Study of the process $e^{+} e^{-} \to η γ \to 7 γ$ in the energy range $s$ = 1.07 -- 2 GeV

SND Collaboration, M. N. Achasov, A. Yu. Barnyakov +35

The $e^{+} e^{-} \to η γ$ cross section is measured in the center-of-mass energy range from 1.07 to 2.00 GeV in the decay channel $η \to 3 π^{0}$ , $π^{0} \to γ γ$ . The data set with an integrated l…

physics.ins-det2023

Electromagnetic calorimeter time measurement applications in the SND physics analysis

N. A. Melnikova, M. N. Achasov, A. A. Botov +6

The SND is a non-magnetic detector at the VEPP-2000 $e^{+} e^{-}$ collider (BINP, Novosibirsk) designed for hadronic cross-section measurements in the center-of-mass energy range u…

hep-ex2022

Experimental study of the $e^{+} e^{-} \to n n ˉ$ process at the VEPP-2000 $e^{+} e^{-}$ collider with the SND detector

M. N. Achasov, A. Yu. Barnyakov, K. I. Beloborodov +32

The process $e^{+} e^{-} \to n n ˉ$ is studied in the experiment at the VEPP-2000 $e^{+} e^{-}$ collider with the SND detector. The technique of the time measurements in the multichannel Na…

hep-ex2021★ 2 cited

Study of the process $e^{+} e^{-} \to η η γ$ in the energy range $\sqrt{s} = \mbox{1.17--2.00}$ GeV with the SND detector

SND Collaboration, M. N. Achasov, A. Yu. Barnyakov +35

The process $e^{+} e^{-} \to η η γ$ is studied in the center-of-mass energy range 1.17-2.00 GeV using data with an integrated luminosity of 201 pb $^{- 1}$ collected by the SND detector at the…

hep-ex2020★ 8 cited

Measurement of the $e^{+} e^{-} \to K^{+} K^{-} π^{0}$ cross section with the SND detector

M. N. Achasov, A. Yu. Barnyakov, M. Yu. Barnyakov +38

The process $e^{+} e^{-} \to K^{+} K^{-} π^{0}$ is studied with the SND detector at the VEPP-2000 $e^{+} e^{-}$ collider. Basing on data with an integrated luminosity of 26.4~pb $^{- 1}$ we measure the…

physics.ins-det2020

DQM Tools and Techniques of the SND Detector

K. V. Pugachev, T. V. Dimova, L. V. Kardapoltsev +3

SND detector operates at the VEPP-2000 collider (BINP, Novosibirsk). To improve events selection for physical analysis and facilitate online detector control we developed new data…

hep-ex2020★ 10 cited

Study of the process $e^{+} e^{-} \to η π^{0} γ$ in the energy range $\sqrt{s} = \mbox{1.05-2.00}$ GeV with the SND detector

SND Collaboration, M. N. Achasov, A. Yu. Barnyakov +38

The process $e^{+} e^{-} \to η π^{0} γ$ is studied in the center-of-mass energy range 1.05-2.00 GeV using data with an integrated luminosity of 94.5 pb $^{- 1}$ collected by the SND detector at…

hep-ex2020★ 41 cited

Measurement of the $e^{+} e^{-} \to π^{+} π^{-}$ process cross section with the SND detector at the VEPP-2000 collider in the energy region $0.525 < s < 0.883$ GeV

SND Collaboration, M. N. Achasov, A. A. Baykov +34

The cross section of the process $e^{+} e^{-} \to π^{+} π^{-}$ has been measured in the Spherical Neutral Detector (SND) experiment at the VEPP-2000 $e^{+} e^{-}$ collider VEPP-2000 in the energy…

hep-ph2019★ 2 cited

A study of the corrections to factorization in $B ˉ^{0} \to D^{*+} ω π^{-}$

S. I. Eidelman, L. V. Kardapoltsev, D. V. Matvienko

A factorization hypothesis is tested by examining a form factor of the $ω π$ production in hadronic $B^{0} \to D^{*\pm} ω π^{\mp}$ decays. The form factor is compared to that from ava…

hep-ex2019★ 18 cited

Search for direct production of the $f_{1} (1285)$ resonance in $e^{+} e^{-}$ collisions

SND Collaboration, M. N. Achasov, A. Yu. Barnyakov +36

A search for direct production of the $f_{1} (1285)$ resonance in $e^{+} e^{-}$ annihilation is performed with the SND detector at the VEPP-2000 $e^{+} e^{-}$ collider. The analysis is based on…

hep-ex2018★ 13 cited

Measurement of the $e^{+} e^{-} \to π^{0} γ$ cross section in the energy range 1.075--2 GeV at SND

M. N. Achasov, A. Yu. Barnyakov, K. I. Beloborodov +34

The process $e^{+} e^{-} \to π^{0} γ$ is studied with the SND detector at the VEPP-2000 $e^{+} e^{-}$ collider. Basing on data with an integrated luminosity of 41 pb $^{- 1}$ recorded in 2010-201…

hep-ex2018★ 10 cited

Search for the process $e^{+} e^{-} \to η$

M. N. Achasov, A. Yu. Barnyakov, K. I. Beloborodov +36

A search for the rare decay $η \to e^{+} e^{-}$ is performed using the inverse process $e^{+} e^{-} \to η$ in the decay mode $η \to π^{0} π^{0} π^{0}$ . We analyze data with an integrat…

hep-ex2017★ 22 cited

Measurement of the $e^{+} e^{-} \to η π^{+} π^{-}$ cross section with the SND detector at the VEPP-2000 collider

M. N. Achasov, A. Yu. Barnyakov, K. I. Beloborodov +33

The $e^{+} e^{-} \to η π^{+} π^{-}$ cross section is measured at the SND detector in the $η$ decay mode $η \to 3 π^{0}$ . The analysis is based on the data sample with an integrated luminosity of…

hep-ex2017★ 19 cited

Measurement of the $e^{+} e^{-} \to K_{S} K_{L} π^{0}$ cross section in the energy range $s = 1.3 - 2.0$ GeV

M. N. Achasov, V. M. Aulchenko, A. Yu. Barnyakov +34

The $e^{+} e^{-} \to K_{S} K_{L} π^{0}$ cross section is measured in the center-of-mass energy range $s = 1.3 - 2.0$ GeV. The analysis is based on the data sample with an integrate…

hep-ex2016★ 41 cited

Measurement of the $e^{+} e^{-} \to K^{+} K^{-}$ cross section in the energy range $s = 1.05 - 2.0$ GeV

M. N. Achasov, V. M. Aulchenko, A. Yu. Barnyakov +38

The $e^{+} e^{-} \to K^{+} K^{-}$ cross section is measured in the center-of-mass energy range $1.05 - 2.00$ GeV at the SND detector. The measurement is based on data with an integrated luminos…

hep-ex2016★ 20 cited

Study of the process $e^{+} e^{-} \to ω η π^{0}$ in the energy range $s < 2$ GeV with the SND detector

M. N. Achasov, V. M. Aulchenko, A. Yu. Barnyakov +33

The process $e^{+} e^{-} \to ω η π^{0}$ is studied in the energy range $1.45 - 2.00$ GeV using data with an integrated luminosity of 33 pb $^{- 1}$ accumulated by the SND detector at the $e^{+} e^{-}$ …

hep-ex2015

Search for the decays $η^{'} \to e^{+} e^{-}$ and $η \to e^{+} e^{-}$ at the VEPP-2000 $e^{+} e^{-}$ collider

L. V. Kardapoltsev

A search for the rare decay $η^{'} \to e^{+} e^{-}$ has been performed with the SND detector at the VEPP-2000 $e^{+} e^{-}$ collider. The inverse reaction $e^{+} e^{-} \to η^{'}$ and $η…

hep-ex2015★ 19 cited

Search for the $η^{'} \to e^{+} e^{-}$ decay with the SND detector

M. N. Achasov, V. M. Aulchenko, A. Yu. Barnyakov +34

A search for the process $e^{+} e^{-} \to η^{'}$ has been performed with the SND detector at the VEPP-2000 $e^{+} e^{-}$ collider. The data were accumulated at the center-of-mass energy o…

hep-ex2014★ 43 cited

Measurement of the $e^{+} e^{-} \to η π^{+} π^{-}$ cross section in the center-of-mass energy range 1.22--2.00 GeV with the SND detector at the VEPP-2000 collider

V. M. Aulchenko, M. N. Achasov, A. Yu. Barnyakov +29

In the experiment with the SND detector at the VEPP-2000 $e^{+} e^{-}$ collider the cross section for the process $e^{+} e^{-} \to η π^{+} π^{-}$ has been measured in the center-of-mass energy range…

NGAMMA: A Monte Carlo generator for multiphoton production in e+e− annihilation

Cross section of the process e+e−→nnˉ near the threshold

Search for the process e+e−→η′γ in the energy range s​ = 1.075 -- 2 GeV

Autoencoder-based Anomaly Detection System for Online Data Quality Monitoring of the CMS Electromagnetic Calorimeter

Study of the process e+e−→ωπ0→π+π−π0π0 in the energy range 1.05−2.00 GeV with SND

Study of the process e+e−→ηγ→7γ in the energy range s​ = 1.07 -- 2 GeV

Electromagnetic calorimeter time measurement applications in the SND physics analysis

Experimental study of the e+e−→nnˉ process at the VEPP-2000 e+e− collider with the SND detector

Study of the process e+e−→ηηγ in the energy range $\sqrt{s} = \mbox{1.17--2.00}$ GeV with the SND detector

Measurement of the e+e−→K+K−π0 cross section with the SND detector

DQM Tools and Techniques of the SND Detector

Study of the process e+e−→ηπ0γ in the energy range $\sqrt{s} = \mbox{1.05-2.00}$ GeV with the SND detector

Measurement of the e+e−→π+π− process cross section with the SND detector at the VEPP-2000 collider in the energy region 0.525<s​<0.883 GeV

A study of the corrections to factorization in Bˉ0→D∗+ωπ−

Search for direct production of the f1​(1285) resonance in e+e− collisions

Measurement of the e+e−→π0γ cross section in the energy range 1.075--2 GeV at SND

Search for the process e+e−→η

Measurement of the e+e−→ηπ+π− cross section with the SND detector at the VEPP-2000 collider

Measurement of the e+e−→KS​KL​π0 cross section in the energy range s​=1.3−2.0 GeV

Measurement of the e+e−→K+K− cross section in the energy range s​=1.05−2.0 GeV

Study of the process e+e−→ωηπ0 in the energy range s​<2 GeV with the SND detector

Search for the decays η′→e+e− and η→e+e− at the VEPP-2000 e+e− collider

Search for the η′→e+e− decay with the SND detector

Measurement of the e+e−→ηπ+π− cross section in the center-of-mass energy range 1.22--2.00 GeV with the SND detector at the VEPP-2000 collider