Publications de Aleksey Vorobyev

Study of coherent J/psi production in lead-lead collisions at root s(NN)=5 TeV with the LHCb experiment

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

Coherent production of J/psi mesons is studied in lead-lead collision data at a nucleon-nucleon centre-of-mass energy of 5 TeV collected by the LHCb experiment. The data set corresponds to an integrated luminosity of about 10 mu b(-1). The J/psi, mesons ar ...

2019

Dalitz plot analysis of the D+ -> K-K+K+ decay

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

The resonant structure of the doubly Cabibbo-suppressed decay D+-> K-K+K+ is studied for the first time. The measurement is based on a sample of pp-collision data, collected at a centre-of-mass energy of 8 TeV with the LHCb detector and corresponding to an ...

Springer Nature2019

Study of the B-0 (770)degrees K-*(892)(0) decay with an amplitude analysis of B-0 ((+-))(K+pi(-)) decays

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

An amplitude analysis of B-0 ((+-))(K+-) decays is performed in the two-body invariant mass regions 300 < m((+-)) < 1100 MeV/c(2), accounting for the (0), , f(0)(500), f(0)(980) and f(0)(1370) resonances, and 750 < m(K+-) < 1200 MeV/c(2), which is dominate ...

Springer Nature2019

Search for CP violation using triple product asymmetries in Lambda(0)(b) -> pK(-) pi(+) pi(-), Lambda(0)(b) -> pK(-) K+ K- and Xi(0)(b) -> pK(-) K- pi(+) decays

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

A search for CP and P violation using triple- product asymmetries is performed with Lambda(0)(b) -> pK(-) pi(+) pi(-), Lambda(0)(b) -> pK(-) K+ K- and Xi(0)(b) -> pK(-) K- pi(+) decays. The data sample corresponds to integrated luminosities of 1.0 fb(-1) a ...

Springer Nature2018

On the use of electron capture rate constants to describe electron capture dissociation mass spectrometry of peptides

Yury Tsybin, Konstantin Zhurov, Aleksey Vorobyev, Unige Anna Laskay

Electron capture dissociation (ECD) tandem mass spectrometry (MS/MS) is a powerful analytical tool for peptide and protein structure analysis. The product ion abundance (PIA) distribution in ECD MS/MS is known to vary as a function of electron irradiation ...

Im Publications2015

Novel Approaches in Tandem Mass Spectrometry for Peptide and Protein Structure Analysis

Aleksey Vorobyev

Results of the mechanistic studies of free-electron based fragmentation methods addressing peptide and protein structure analysis with mass spectrometry (MS), electron capture dissociation (ECD) and electron ionization dissociation (EID), are presented. Se ...

EPFL2012

Heterolytic N-Calpha Bond Cleavage in Electron Capture and Transfer Dissociation of Peptide Cations

Yury Tsybin, Matthew Wodrich, Anne-Clémence Corminboeuf, Konstantin Zhurov, Hisham Ben Hamidane, Aleksey Vorobyev

Mass spectrometry techniques employing electron capture and electron transfer dissociation represent powerful approaches for the analysis of biological samples. Despite routine employment in analytical fields, the underlying physical processes dictating pe ...

Amer Chemical Soc2012

High-Resolution and Tandem Mass Spectrometry – the Indispensable Tools of the XXI Century

Yury Tsybin, Anton Kozhinov, Luca Fornelli, Aleksey Vorobyev, Sasa Miladinovic

Mass spectrometry-based qualitative and quantitative (bio)molecular analysis is a corner stone in the state-of-the-art pipelines in systems biology and environmental sciences. High-resolution and efficient tandem mass spectrometry methods and techniques ar ...

Schweizerische Chemische Gesellschaft2011

Repeatability and reproducibility of product ion abundances in electron capture dissociation mass spectrometry of peptides

Yury Tsybin, Hisham Ben Hamidane, Aleksey Vorobyev

Site-specific reproducibility and repeatability of electron capture dissociation (ECD) in Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) are of fundamental importance for product ion abundance (PIA)-based peptide and protein struct ...

2011

Towards data acquisition throughput increase in Fourier transform mass spectrometry of proteins using double frequency measurements

Yury Tsybin, Aleksey Vorobyev

Combined with high and ultra high pressure liquid chromatography, mass spectrometry-based peptide and protein structure analysis requires high resolution and mass accuracy achievable within short ion detection time. Although Fourier transform ion cyclotron ...

Elsevier2011