Publications by Serhii Cholak | EPFL Graph Search

Erratum to: Comprehensive analysis of local and nonlocal amplitudes in the B0 → K*0μ+μ− decay

Aurelio Bay, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Sebastian Schulte, Serhii Cholak, Elena Graverini, Ettore Zaffaroni, Donal Patrick Hill, Elisabeth Maria Niel, Aravindhan Venkateswaran, Dimitrios Kaminaris, Radoslav Marchevski, Vitalii Lisovskyi, Luis Miguel Garcia Martin

Due to a small manual rounding error, an incorrect central value was quoted in table 4 for the C 9τ parameter. The correct result is given by C 9τ = (−1.2 ± 2.6 ± 1.0) × 10 2 , (1) instead of (−1.0±2.6±1.0)×10 2 , corresponding to a difference of −0.2×10 2 ...

Springer Science and Business Media LLC2025

Branching fraction measurement of the decay B+→ψ(2S)ϕ(1020)K+

Aurelio Bay, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Sebastian Schulte, Serhii Cholak, Elena Graverini, Ettore Zaffaroni, Aravindhan Venkateswaran, Dimitrios Kaminaris, Radoslav Marchevski, Vitalii Lisovskyi, Luis Miguel Garcia Martin

The branching fraction of the decay B + → ψ ( 2 S ) ϕ ( 1020 ) K + , relative to the topologically similar decay B + → J / ψ ϕ ( 1020 ) K + , is measured using proton-proton collision data collected by the LHCb experiment at center-of-mass energies of 7, 8 ...

American Physical Society (APS)2025

Measurement of CP violation in B0→ D+D− and Bs0→Ds+Ds− decays

Aurelio Bay, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Sebastian Schulte, Serhii Cholak, Elena Graverini, Ettore Zaffaroni, Donal Patrick Hill, Elisabeth Maria Niel, Aravindhan Venkateswaran, Dimitrios Kaminaris, Radoslav Marchevski, Vitalii Lisovskyi, Luis Miguel Garcia Martin

A time-dependent, flavour-tagged measurement of CP violation is performed with B0→ D+D− and Bs0→Ds+Ds− decays, using data collected by the LHCb detector in proton-proton collisions at a centre-of-mass energy of 13 TeV corresponding to an integrated luminos ...

2025

Evidence for B^{-}→D^{**0}τ^{-}ν_{τ}[over ¯] Decays

Aurelio Bay, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Serhii Cholak, Elena Graverini, Ettore Zaffaroni, Aravindhan Venkateswaran, Dimitrios Kaminaris, Radoslav Marchevski, Vitalii Lisovskyi, Luis Miguel Garcia Martin

The first evidence for the decay B^{-}→D^{**0}τ^{-}ν[over ¯]_{τ} is obtained using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb^{-1}, at centre-of-mass energies of 7, 8, and 13 TeV. Here, ...

2025

Observation of Exotic J/ψφ Resonant Structure in Diffractive Processes in Proton-Proton Collisions

Aurelio Bay, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Surapat Ek-In, Sebastian Schulte, Serhii Cholak, Elena Graverini, Ettore Zaffaroni, Donal Patrick Hill, Renato Quagliani, Elisabeth Maria Niel, Aravindhan Venkateswaran, Dimitrios Kaminaris, Radoslav Marchevski, Vitalii Lisovskyi, Luis Miguel Garcia Martin

The first study of J/ψφ production in diffractive processes in proton-proton collisions is presented. The study is based on an LHCb dataset recorded at center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5 fb-1. The data disfavor ...

2025

Measurement of exclusive J/ψ and ψ(2S) production at ps = 13 TeV

Aurelio Bay, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Sebastian Schulte, Serhii Cholak, Elena Graverini, Ettore Zaffaroni, Donal Patrick Hill, Elisabeth Maria Niel, Aravindhan Venkateswaran, Dimitrios Kaminaris, Radoslav Marchevski, Vitalii Lisovskyi, Luis Miguel Garcia Martin

Measurements are presented of the cross-section for the central exclusive production of J/ψ → µ+µ− and ψ(2S) → µ+µ− processes in proton-proton collisions at ps = 13 TeV with 2016–2018 data. They are performed by requiring both muons to be in the LHCb accep ...

2025

Study of Ds1(2460)+→Ds+π+π- in B→D¯(*)Ds+π+π- decays

Aurelio Bay, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Sebastian Schulte, Serhii Cholak, Elena Graverini, Ettore Zaffaroni, Aravindhan Venkateswaran, Dimitrios Kaminaris, Radoslav Marchevski, Vitalii Lisovskyi, Luis Miguel Garcia Martin

An amplitude analysis of the Ds1(2460)+→Ds+π+π- transition is performed simultaneously in B0→D-Ds+π+π-, B+→D¯0Ds+π+π-, and B0→D*-Ds+π+π- decays. The study is based on a data sample of proton-proton collisions recorded with the LHCb detector at centre-of-ma ...

2025

Measurement of D0- D ¯ 0 mixing and search for CP violation with D0 →k+π- decays

Aurelio Bay, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Sebastian Schulte, Serhii Cholak, Elena Graverini, Ettore Zaffaroni, Donal Patrick Hill, Elisabeth Maria Niel, Aravindhan Venkateswaran, Dimitrios Kaminaris, Radoslav Marchevski, Vitalii Lisovskyi, Luis Miguel Garcia Martin

A measurement of the time-dependent ratio of the D0→K+π- to D¯0→K+π- decay rates is reported. The analysis uses a sample of proton-proton collisions corresponding to an integrated luminosity of 6 fb-1 recorded by the LHCb experiment from 2015 through 2018 ...

American Physical Society2025

Long-lived particle reconstruction downstream of the LHCb magnet

Aurelio Bay, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Sebastian Schulte, Serhii Cholak, Elena Graverini, Ettore Zaffaroni, Donal Patrick Hill, Elisabeth Maria Niel, Aravindhan Venkateswaran, Dimitrios Kaminaris, Radoslav Marchevski, Vitalii Lisovskyi, Luis Miguel Garcia Martin

Charged-particle trajectories are usually reconstructed with the LHCb detector using combined information from the tracking devices placed upstream and downstream of the 4 T m dipole magnet. Trajectories reconstructed using only information from the tracke ...

2025

First Evidence for Direct CP Violation in Beauty to Charmonium Decays

Aurelio Bay, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Sebastian Schulte, Serhii Cholak, Elena Graverini, Ettore Zaffaroni, Donal Patrick Hill, Elisabeth Maria Niel, Aravindhan Venkateswaran, Dimitrios Kaminaris, Radoslav Marchevski, Vitalii Lisovskyi, Luis Miguel Garcia Martin

The CP asymmetry and branching fraction of the Cabibbo-Kobayashi-Maskawa-suppressed decay B+→J/ψπ+ are precisely measured relative to the favored decay B+→J/ψK+ using a sample of proton-proton collision data corresponding to an integrated luminosity of 5.4 ...

2025

Angular analysis of B0 → K*0e+e− decays

Aurelio Bay, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Sebastian Schulte, Serhii Cholak, Elena Graverini, Ettore Zaffaroni, Donal Patrick Hill, Elisabeth Maria Niel, Aravindhan Venkateswaran, Dimitrios Kaminaris, Radoslav Marchevski, Vitalii Lisovskyi, Luis Miguel Garcia Martin

An angular analysis of B 0 → K *0 e + e − decays is presented using proton-proton collision data collected by the LHCb experiment at centre-of-mass energies of 7, 8 and 13 TeV, corresponding to an integrated luminosity of 9 fb −1. The analysis is performed ...

Springer Science and Business Media LLC2025

Measurements of ψ(2S) and χc1(3872) production within fully reconstructed jets

Aurelio Bay, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Sebastian Schulte, Serhii Cholak, Elena Graverini, Ettore Zaffaroni, Donal Patrick Hill, Elisabeth Maria Niel, Aravindhan Venkateswaran, Dimitrios Kaminaris, Radoslav Marchevski, Vitalii Lisovskyi, Luis Miguel Garcia Martin

This paper presents the first measurement of ψ(2S) and χc1(3872) meson production within fully reconstructed jets. Each quarkonium state (tag) is reconstructed via its decay to the J/ψ(→μ+μ−)π+π− final state in the forward region using proton-proton collis ...

Springer Science and Business Media LLC2025

Measurement of the multiplicity dependence of Υ production ratios in pp collisions at $ \sqrt{s} $ = 13 TeV

Aurelio Bay, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Serhii Cholak, Elena Graverini, Ettore Zaffaroni, Aravindhan Venkateswaran, Dimitrios Kaminaris, Radoslav Marchevski, Vitalii Lisovskyi, Luis Miguel Garcia Martin

The Υ(2S) and Υ(3S) production cross-sections are measured relative to that of the Υ(1S) meson, as a function of charged-particle multiplicity in proton-proton collisions at a centre-of-mass energy of 13 TeV. The measurement uses data collected by the LHCb ...

Springer Science and Business Media LLC2025

Amplitude analysis of B+ → ψ(2S)K+ π+ π- decays

Aurelio Bay, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Sebastian Schulte, Serhii Cholak, Elena Graverini, Ettore Zaffaroni, Donal Patrick Hill, Elisabeth Maria Niel, Aravindhan Venkateswaran, Dimitrios Kaminaris, Radoslav Marchevski, Vitalii Lisovskyi, Luis Miguel Garcia Martin

The first full amplitude analysis of B+ -> psi(2S)K+pi(+)pi(-) decays is performed using proton-proton collision data corresponding to an integrated luminosity of 9 fb(-1) recorded with the LHCb detector. The rich K+pi(+)pi(-) spectrum is studied and the b ...

SPRINGER2025

Measurement of ϕ(1020) meson production in fixed-target pNe collisions at $ \sqrt{s_{NN}} $ = 68.5 GeV

Aurelio Bay, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Sebastian Schulte, Serhii Cholak, Elena Graverini, Ettore Zaffaroni, Aravindhan Venkateswaran, Dimitrios Kaminaris, Radoslav Marchevski, Vitalii Lisovskyi, Luis Miguel Garcia Martin

The first measurement of ϕ (1020) meson production in fixed-target p Ne collisions at

\sqrt{s_{NN}}

= 68 . 5 GeV is presented. The ϕ (1020) mesons are reconstructed in their K + K − decay in a data sample consisting of proton collisions on neon nuclei ...

Springer Science and Business Media LLC2025

Study of Λb0 and Ξb0 Decays to Λh+h′- and Evidence for CP Violation in Λb0 → Λk+K- Decays

Aurelio Bay, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Sebastian Schulte, Serhii Cholak, Elena Graverini, Ettore Zaffaroni, Aravindhan Venkateswaran, Dimitrios Kaminaris, Radoslav Marchevski, Vitalii Lisovskyi, Luis Miguel Garcia Martin

A study of Λb0 and Ξb0 decays to Λh+h′- (h(′)=π,K) is performed using pp collision data collected by the LHCb experiment during LHC Runs 1-2, corresponding to an integrated luminosity of 9 fb-1. The branching fractions for these decays are measured using t ...

2025

Measurement of the CKM angle γ in B± → DK*(892)± decays

Aurelio Bay, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Sebastian Schulte, Serhii Cholak, Elena Graverini, Ettore Zaffaroni, Donal Patrick Hill, Elisabeth Maria Niel, Aravindhan Venkateswaran, Dimitrios Kaminaris, Radoslav Marchevski, Vitalii Lisovskyi, Luis Miguel Garcia Martin

Measurements of CP observables and the CKM angle γ are performed in B ± → DK * (892) ± decays, where D represents a superposition of D 0 and

{\overline{D}}^0

states, using the LHCb dataset collected during Run 1 (2011–2012) and Run 2 (2015–2018). A stu ...

Springer Science and Business Media LLC2025

Measurement of the Branching Fraction Ratios (Formula presented) and (Formula presented) Using Muonic (Formula presented) Decays

Aurelio Bay, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Sebastian Schulte, Serhii Cholak, Elena Graverini, Ettore Zaffaroni, Donal Patrick Hill, Elisabeth Maria Niel, Aravindhan Venkateswaran, Dimitrios Kaminaris, Radoslav Marchevski, Vitalii Lisovskyi, Luis Miguel Garcia Martin

The branching fraction ratios of (Formula presented) and (Formula presented) decays are measured with respect to their muonic counterparts, using a data sample corresponding to an integrated luminosity of (Formula presented) collected by the LHCb experimen ...

2025

Observation of Collider Neutrinos without Final State Muons with the SND@LHC Experiment

Aurelio Bay, Mikhail Chapochnikov, Olivier Schneider, Lesya Shchutska, Anna Mascellani, Carina Trippl, Serhii Cholak, Elena Graverini, Ettore Zaffaroni, Jan Steggemann, Konstantin Androsov, Zhenyu Yang

We report the observation of neutrino interactions without final state muons at the LHC, with a significance of 6.4σ. A dataset of proton-proton collisions at s=13.6 TeV collected by SND@LHC in 2022 and 2023 is used, corresponding to an integrated luminosi ...

American Physical Society (APS)2025

Publisher Erratum: Long-lived particle reconstruction downstream of the LHCb magnet

Aurelio Bay, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Sebastian Schulte, Serhii Cholak, Elena Graverini, Ettore Zaffaroni, Donal Patrick Hill, Elisabeth Maria Niel, Aravindhan Venkateswaran, Dimitrios Kaminaris, Radoslav Marchevski, Vitalii Lisovskyi, Luis Miguel Garcia Martin

Springer Science and Business Media LLC2025