Publications by Veronica Sølund Kirsebom

Momentum scale calibration of the LHCb spectrometer

Lesya Shchutska, Olivier Schneider, Aurelio Bay, Guido Haefeli, Frédéric Blanc, Tatsuya Nakada, Elena Graverini, Renato Quagliani, Aravindhan Venkateswaran, Luis Miguel Garcia Martin

For accurate determination of particle masses accurate knowledge of the momentum scale of the detectors is crucial. The procedure used to calibrate the momentum scale of the LHCb spectrometer is described and illustrated using the performance obtained with ...

Iop Publishing Ltd2024

Helium identification with LHCb

Lesya Shchutska, Olivier Schneider, Aurelio Bay, Guido Haefeli, Frédéric Blanc, Tatsuya Nakada, Elena Graverini, Renato Quagliani, Aravindhan Venkateswaran, Vitalii Lisovskyi

The identification of helium nuclei at LHCb is achieved using a method based on measurements of ionisation losses in the silicon sensors and timing measurements in the Outer Tracker drift tubes. The background from photon conversions is reduced using the R ...

Iop Publishing Ltd2024

Measurement of the D* longitudinal polarization in B0 →d*-τ+ντ decays

Lesya Shchutska, Olivier Schneider, Aurelio Bay, Guido Haefeli, Frédéric Blanc, Tatsuya Nakada, Elena Graverini, Renato Quagliani, Aravindhan Venkateswaran, Luis Miguel Garcia Martin

The longitudinal polarization fraction of the D* meson is measured in B0→D*-τ+ντ decays, where the τ lepton decays to three charged pions and a neutrino, using proton-proton collision data collected by the LHCb experiment at center-of-mass energies of 7, 8 ...

American Physical Society2024

Measurement of associated J/ψ-ψ(2S) production cross-section in pp collisions at √s = 13 TeV

Lesya Shchutska, Olivier Schneider, Aurelio Bay, Guido Haefeli, Frédéric Blanc, Tatsuya Nakada, Elena Graverini, Renato Quagliani, Aravindhan Venkateswaran, Luis Miguel Garcia Martin

The cross-section of associated J/ψ-ψ(2S) production in proton-proton collisions at a centre-of-mass energy of (Formula presented.) TeV is measured using a data sample corresponding to an integrated luminosity of 4.2 fb−1, collected by the LHCb experiment. ...

Springer Nature2024

Multiplicity dependence of σψ(2S)/σJ/ψ in pp collisions at √s = 13 TeV

Lesya Shchutska, Olivier Schneider, Aurelio Bay, Guido Haefeli, Frédéric Blanc, Tatsuya Nakada, Elena Graverini, Renato Quagliani, Aravindhan Venkateswaran, Luis Miguel Garcia Martin

The ratio of production cross-sections of ψ(2S) over J/ψ mesons as a function of charged-particle multiplicity in proton-proton collisions at a centre-of-mass energy s = 13 TeV is measured with a data sample collected by the LHCb detector, corresponding to ...

Springer Nature2024

Curvature-bias corrections using a pseudomass method

Lesya Shchutska, Olivier Schneider, Aurelio Bay, Guido Haefeli, Frédéric Blanc, Tatsuya Nakada, Elena Graverini, Renato Quagliani, Aravindhan Venkateswaran, Luis Miguel Garcia Martin

Momentum measurements for very high momentum charged particles, such as muons from electroweak vector boson decays, are particularly susceptible to charge-dependent curvature biases that arise from misalignments of tracking detectors. Low momentum charged ...

Iop Publishing Ltd2024

Measurement of the CKM angle γ in the B0→DK *0 channel using self-conjugate D→ KS0h+ h- decays

Lesya Shchutska, Olivier Schneider, Aurelio Bay, Guido Haefeli, Frédéric Blanc, Tatsuya Nakada, Elena Graverini, Renato Quagliani, Aravindhan Venkateswaran, Luis Miguel Garcia Martin

A model-independent study of CP violation in B-0 -> DK (*0) decays is presented using data corresponding to an integrated luminosity of 9 fb(-1) collected by the LHCb experiment at centre-of-mass energies of v s = 7, 8 and 13TeV. The CKM angle. is determin ...

Springer2024

Amplitude Analysis of the B0 - K*0 μ+μ- Decay

Lesya Shchutska, Olivier Schneider, Aurelio Bay, Guido Haefeli, Frédéric Blanc, Tatsuya Nakada, Michel De Cian, Elena Graverini, Renato Quagliani, Aravindhan Venkateswaran

An amplitude analysis of the B-0 -> K*(0) mu(+)mu(-) decay is presented using a dataset corresponding to an integrated luminosity of 4.7 fb(-1) of pp collision data collected with the LHCb experiment. For the first time, the coefficients associated to shor ...

Amer Physical Soc2024

Determination of short- and long-distance contributions in B0 →k∗0μ+μ- decays

Lesya Shchutska, Olivier Schneider, Guido Haefeli, Frédéric Blanc, Tatsuya Nakada, Elena Graverini, Renato Quagliani, Aravindhan Venkateswaran, Luis Miguel Garcia Martin, Vitalii Lisovskyi

An amplitude analysis of the B0→K∗0μ+μ- decay is presented. The analysis is based on data collected by the LHCb experiment from proton-proton collisions at s=7, 8 and 13 TeV, corresponding to an integrated luminosity of 4.7 fb-1. For the first time, Wilson ...

American Physical Society2024

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

Lesya Shchutska, Olivier Schneider, Guido Haefeli, Frédéric Blanc, Tatsuya Nakada, Elena Graverini, Renato Quagliani, Aravindhan Venkateswaran, Luis Miguel Garcia Martin, Vitalii Lisovskyi

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