Publications by Olivier Schneider

Measurement of the muon flux at the SND@LHC experiment

Aurelio Bay, Mikhail Chapochnikov, Guido Haefeli, Olivier Schneider, Lesya Shchutska, Anna Mascellani, Carina Trippl, Serhii Cholak, Elena Graverini, Ettore Zaffaroni

The Scattering and Neutrino Detector at the LHC (SND@LHC) started taking data at the beginning of Run 3 of the LHC. The experiment is designed to perform measurements with neutrinos produced in proton-proton collisions at the LHC in an energy range between ...

2024

Results and Perspectives from the First Two Years of Neutrino Physics at the LHC by the SND@LHC Experiment

Aurelio Bay, Mikhail Chapochnikov, Guido Haefeli, Olivier Schneider, Sun Hee Kim, Lesya Shchutska, Inar Timiryasov, Anna Mascellani, Carina Trippl, Serhii Cholak, Elena Graverini, Ettore Zaffaroni, Jan Steggemann, Konstantin Androsov

After rapid approval and installation, the SND@LHC Collaboration was able to gather data successfully in 2022 and 2023. Neutrino interactions from nu(mu)s originating at the LHC IP1 were observed. Since muons constitute the major background for neutrino in ...

MDPI2024

Analysis of Λ0b →pK- μ+ μ- 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 differential branching fraction and angular coefficients of Lambda(0)(b) -> pK(-) mu(+) mu(-)decays are measured in bins of the dimuon mass squared and dihadron mass. The analysis is performed using a data set corresponding to 9 fb(-1) of integrated lu ...

SPRINGER2024

Measurement of forward charged hadron flow harmonics in peripheral PbPb collisions at √sNN = 5.02 TeV with the LHCb detector

Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Surapat Ek-In, Sebastian Schulte, Veronica Sølund Kirsebom, Sara Celani, 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

for the LHCb Collaboration.Flow harmonic coefficients, vn, which are the key to studying the hydrodynamics of the quark-gluon plasma (QGP) created in heavy-ion collisions, have been measured in various collision systems and kinematic regions and using vari ...

2024

Amplitude analysis of the Λb0→pK−γ decay

Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Surapat Ek-In, Sebastian Schulte, Veronica Sølund Kirsebom, Sara Celani, 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 resonant structure of the radiative decay Λb0→pK−γ in the region of proton-kaon invariant-mass up to 2.5 GeV/c2 is studied using proton-proton collision data recorded at centre-of-mass energies of 7, 8, and 13 TeV collected with the LHCb detector, corr ...

Springer Nature2024

Transverse polarization measurement of Λ hyperons in pNe collisions at sNN = 68.4 GeV with the LHCb detector

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 transverse polarization of the Λ and Λ¯ hyperons in pNe fixed-target collisions at sNN = 68.4 GeV is presented using data collected by the LHCb detector. The polarization is studied using the decay Λ → pπ− together with its charge conj ...

Springer Nature2024

Observation of Ξb0→ Ξc + Ds- and Ξb0 c D- s decays

Aurelio Bay, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Lino Ferreira Lopes, Surapat Ek-In, Sebastian Schulte, Veronica Sølund Kirsebom, Carina Trippl, Sara Celani, Serhii Cholak, Elena Graverini, Ettore Zaffaroni, Donal Patrick Hill, Renato Quagliani, Elisabeth Maria Niel, Aravindhan Venkateswaran, Dimitrios Kaminaris, Vitalii Lisovskyi, Luis Miguel Garcia Martin

Springer2024

Observation of ᴧb0→ ᴧc+ D̄()0K− and ᴧb0→ ᴧc+ Ds− decays

Aurelio Bay, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Surapat Ek-In, Sebastian Schulte, Veronica Sølund Kirsebom, Sara Celani, 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 decays Λb 0→Λc +D¯(∗)0K- and Λb 0→Λc +Ds ∗- are observed for the first time, in proton-proton collision data at s=13TeV, corresponding to an integrated luminosity of 5.4fb-1 collected with the LHCb detector. Their ratios of branching fractions with res ...

2024

Measurement of CP Violation in B0 → ψ(→ l+ l-)KS0(→ π+ π-) Decays

Aurelio Bay, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Lino Ferreira Lopes, Surapat Ek-In, Vladimir Macko, Sebastian Schulte, Veronica Sølund Kirsebom, Carina Trippl, Sara Celani, Serhii Cholak, Elena Graverini, Ettore Zaffaroni, Donal Patrick Hill, Renato Quagliani, Elisabeth Maria Niel, Aravindhan Venkateswaran, Dimitrios Kaminaris, Vitalii Lisovskyi, Luis Miguel Garcia Martin

A measurement of time-dependent CP violation in the decays of B-0 and (B) over bar (0) mesons to the final states J/psi(-> mu(+) mu(-))K-S(0), psi(2S)(-> mu(+) mu(-))K-S(0) and J/psi(-> e(+)e(-))K-S(0) with K-S(0) -> pi(+)pi(-) is presented. The data corre ...

AMER PHYSICAL SOC2024

A measurement of ∆Γs

Aurelio Bay, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Surapat Ek-In, Sebastian Schulte, Veronica Sølund Kirsebom, Sara Celani, 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

Using a dataset corresponding to 9 fb−1 of integrated luminosity collected with the LHCb detector between 2011 and 2018 in proton-proton collisions, the decay-time distributions of the decay modes Bs 0→J/ψη′ and Bs 0→J/ψπ+π− are studied. The decay-width di ...

Springer Nature2024

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

A comprehensive study of the local and nonlocal amplitudes contributing to the decay B0 → K*0(→ K+π−)μ+μ− is performed by analysing the phase-space distribution of the decay products. The analysis is based on pp collision data corresponding to an integrate ...

Springer Nature2024

Erratum to: Search for CP violation in the phase space of D0 → π - π+π0 decays with the energy test

Aurelio Bay, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Lino Ferreira Lopes, Surapat Ek-In, Vladimir Macko, Sebastian Schulte, Veronica Sølund Kirsebom, Carina Trippl, Sara Celani, Serhii Cholak, Elena Graverini, Maria Vieites Diaz, Ettore Zaffaroni, Donal Patrick Hill, Renato Quagliani, Elisabeth Maria Niel, Aravindhan Venkateswaran, Vitalii Lisovskyi, Luis Miguel Garcia Martin

Springer Nature2024

Erratum to: Measurement of the Λc+ to D0 production ratio in peripheral PbPb collisions at sNN = 5.02 TeV(Journal Of High Energy Physics, (2023), 6, 10.1007/JHEP06(2023)132)

Aurelio Bay, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Matthieu Philippe Luther Marinangeli, Lino Ferreira Lopes, Surapat Ek-In, Vladimir Macko, Ana Bárbara Rodrigues Cavalcante, Michel De Cian, Sebastian Schulte, Veronica Sølund Kirsebom, Carina Trippl, Sara Celani, Serhii Cholak, Elena Graverini, Maria Vieites Diaz, Ettore Zaffaroni, Donal Patrick Hill, Renato Quagliani, Elisabeth Maria Niel

We report on a measurement of the Λ+c to D0 production ratio in peripheral PbPb collisions at √ sNN = 5.02TeV with the LHCb detector in the forward rapidity region 2 < y < 4.5. The Λ+c (D0) hadrons are reconstructed via the decay channel Λ+c → pK−π+ (D0 → ...

2024

Production of η and η' mesons in pp and pPb collisions

Aurelio Bay, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Surapat Ek-In, Sebastian Schulte, Veronica Sølund Kirsebom, Sara Celani, 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 production of eta and eta' mesons is studied in proton -proton and proton -lead collisions collected with the LHCb detector. Proton -proton collisions are studied at center -of -mass energies of 5.02 and 13 TeV and proton -lead collisions are studied a ...

Amer Physical Soc2024

Enhanced Production of Λb0 Baryons in High-Multiplicity pp Collisions at √s=13 TeV

Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Surapat Ek-In, Sebastian Schulte, Veronica Sølund Kirsebom, Sara Celani, 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 production rate of Lambda(0)(b) baryons relative to B-0 mesons in pp collisions at a center-of-mass energy root s = 13 TeV is measured by the LHCb experiment. The ratio of Lambda(0)(b) to B-0 production cross sections shows a significant dependence on ...

AMER PHYSICAL SOC2024

Modification of 𝜒𝑐⁢1⁡(3872) and 𝜓⁡(2⁢𝑆) Production in 𝑝⁢Pb Collisions at √𝑠NN=8.16 TeV

Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Surapat Ek-In, Sebastian Schulte, Veronica Sølund Kirsebom, Sara Celani, 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 LHCb Collaboration measures production of the exotic hadron χc1(3872) in proton-nucleus collisions for the first time. Comparison with the charmonium state ψ(2S) suggests that the exotic χc1(3872) experiences different dynamics in the nuclear medium th ...

2024

Prompt and nonprompt ψ(2S) production in pPb collisions at √sNN=8.16 TeV

Aurelio Bay, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Surapat Ek-In, Sebastian Schulte, Veronica Sølund Kirsebom, Sara Celani, 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 production of psi(2S) mesons in proton-lead collisions at a centre-of-mass energy per nucleon pair of root s(NN) = 8.16TeV is studied with the LHCb detector using data corresponding to an integrated luminosity of 34 nb(-1). The prompt and nonprompt psi ...

Springer Nature2024

SND@LHC: the scattering and neutrino detector at the LHC

Olivier Schneider, Lesya Shchutska, Ana Bárbara Rodrigues Cavalcante, Anna Mascellani, Carina Trippl, Serhii Cholak, Elena Graverini, Ettore Zaffaroni

SND@LHC is a compact and stand-alone experiment designed to perform measurements with neutrinos produced at the LHC in the pseudo-rapidity region of 7.2 < η < 8.4. The experiment is located 480 m downstream of the ATLAS interaction point, in the TI18 tunne ...

2024

Search for CP violation in the phase space of D0 → KS0K±π∓ decays with the energy test

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

A search for CP violation in D-0 -> (KSK+)-K-0 pi(-) and D-0 -> (KSK-)-K-0 pi(+) decays is reported. The search is performed using an unbinned model-independent method known as the energy test that probes local CP violation in the phase space of the decays ...

Springer Nature2024

Measurement of Λ0 𝑏, Λ+ 𝑐, and Λ Decay Parameters Using Λ0 𝑏 →Λ+ 𝑐⁢ℎ− Decays

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 comprehensive study of the angular distributions in the bottom-baryon decays (Formula presented), followed by (Formula presented) with (Formula presented) or (Formula presented) decays, is performed using a data sample of proton-proton collisions corresp ...

2024