Quark down

Azimuthal Correlations within Exclusive Dijets with Large Momentum Transfer in Photon-Lead Collisions

Matthias Finger, Konstantin Androsov, Jan Steggemann, Qian Wang, Yiming Li, Varun Sharma, Xin Chen, Arvind Shah, Rakesh Chawla, Jian Wang

The structure of nucleons is multidimensional and depends on the transverse momenta, spatial geometry, and polarization of the constituent partons. Such a structure can be studied using high-energy photons produced in ultraperipheral heavy-ion collisions. ...

Amer Physical Soc2023

Production of Chern-Simons bosons in decays of mesons

Kyrylo Bondarenko, Pavlo Kashko

We consider the effective interaction of quarks with a new GeV-scale vector particle that couples to electroweak gauge bosons by the so-called effective Chern-Simons (CS) interaction. We call this particle the CS boson. We construct effective Lagrangian of ...

IOP Publishing Ltd2022

Search for long-lived particles decaying to e(+/-)mu(-/+)nu

Lesya Shchutska, Olivier Schneider, Aurelio Bay, Yiming Li, Guido Haefeli, Frédéric Blanc, Christoph Frei, Tatsuya Nakada, Michel De Cian, Elena Graverini

Long-lived particles decaying to e(+/-) mu(-/+)nu, with masses between 7 and 50 GeV/c(2) and lifetimes between 2 and 50 ps, are searched for by looking at displaced vertices containing electrons and muons of opposite charges. The search is performed using ...

SPRINGER2021

Search for flavoured leptonic decays of long-lived particles in the LHCb detector

Matthieu Philippe Luther Marinangeli

New massive long-lived particles (LLP) are predicted by multiple beyond the Standard Model theories. This thesis presents the search of such long-lived particles decaying leptonically in the

e \mu \nu

final state. The search is performed using 2.31 fb$^{ ...

EPFL2020

Measurement of the mass and production rate of Xi(-)(b)( )baryons

Olivier Schneider, Yiming Li, Guido Haefeli, Christoph Frei, Aurelio Bay, Frédéric Blanc, Tatsuya Nakada, Michel De Cian, Elena Graverini, Federico Leo Redi

The first measurement of the production rate of Xi(-)(b) baryons in pp collisions relative to that of Lambda(0 )(b)baryons is reported, using data samples collected by the LHCb experiment, and corresponding to integrated luminosities of 1, 2 and 1.6 fb(-1) ...

American Physical Society2019

Observation of a New Xi(-)(b) Resonance

Olivier Schneider, Guido Haefeli, Aurelio Bay, Christoph Frei, Tatsuya Nakada, Frédéric Blanc, Michel De Cian, Luca Pescatore, François Fleuret, Chitsanu Khurewathanakul

From samples of pp collision data collected by the LHCb experiment at root s = 7, 8 and 13 TeV, corresponding to integrated luminosities of 1.0, 2.0 and 1.5 fb(-1), respectively, a peak in both the Lambda(0)(b) K- and Xi(0)(b)pi(-) invariant mass spectra i ...

2018

Measurement of the properties of the I (b) (au 0) baryon

Olivier Schneider, Yiming Li, Aurelio Bay, Guido Haefeli, Frédéric Blanc, Christoph Frei, Tatsuya Nakada, Michel De Cian, Luca Pescatore, François Fleuret

We perform a search for near-threshold I (b) (0) resonances decaying to I (b) (-) pi (+) in a sample of proton-proton collision data corresponding to an integrated luminosity of 3 fb(-1) collected by the LHCb experiment. We observe one resonant state, with ...

Springer Nature2016

Search for flavoured leptonic decays of long-lived particles in the LHCb detector

Matthieu Philippe Luther Marinangeli

New massive long-lived particles (LLP) are predicted by multiple beyond the Standard Model theories. This thesis presents the search of such long-lived particles decaying leptonically in the

e \mu \nu

final state. The search is performed using 2.31 fb$^{ ...

EPFL2020

Quark down

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Azimuthal Correlations within Exclusive Dijets with Large Momentum Transfer in Photon-Lead Collisions

Production of Chern-Simons bosons in decays of mesons

Search for long-lived particles decaying to e(+/-)mu(-/+)nu

Search for flavoured leptonic decays of long-lived particles in the LHCb detector

Measurement of the mass and production rate of Xi(-)(b)( )baryons

Observation of a New Xi(-)(b) Resonance

Measurement of the properties of the I (b) (au 0) baryon

Strings from domain walls in supersymmetric Yang-Mills theory and adjoint QCD

Quarkonium spectral function in medium at next-to-leading order for any quark mass

Azimuthal Correlations within Exclusive Dijets with Large Momentum Transfer in Photon-Lead Collisions

Strings from domain walls in supersymmetric Yang-Mills theory and adjoint QCD

Production of Chern-Simons bosons in decays of mesons

Quarkonium spectral function in medium at next-to-leading order for any quark mass

Search for long-lived particles decaying to e(+/-)mu(-/+)nu

Measurement of the properties of the I (b) (au 0) baryon

Search for flavoured leptonic decays of long-lived particles in the LHCb detector

Measurement of the mass and production rate of Xi(-)(b)( )baryons

Observation of a New Xi(-)(b) Resonance