Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/175063
Title: | Measurement off f(s)/f(u) Variation with Proton-Proton Collision Energy and B-Meson Kinematics |
Author: | Alfonso Albero, Alejandro Calvo Gómez, Míriam Camboni, Alessandro Coquereau, Samuel Garrido Beltrán, Lluís Gascón Fora, David Gironella Gironell, Pere Graciani Díaz, Ricardo Graugés Pous, Eugeni Vilasis-Cardona, Xavier García Martín, L. M. Henry, L. Martínez Vidal, F. Oyanguren Campos, Arantza de Remon Alepuz, C. Ruiz Vidal, J. Sánchez Mayordomo, C. LHCb Collaboration |
Keywords: | Cinemàtica Protons Mesons (Física nuclear) Kinematics Protons Mesons (Nuclear physics) |
Issue Date: | 26-Mar-2020 |
Publisher: | American Physical Society |
Abstract: | The ratio of the B0s and B+ fragmentation fractions fs and fu is studied with B0s→J/ψϕ and B+→J/ψK+ decays using data collected by the LHCb experiment in proton-proton collisions at 7, 8, and 13 TeV center-of-mass energies. The analysis is performed in bins of B-meson momentum, longitudinal momentum, transverse momentum, pseudorapidity, and rapidity. The fragmentation-fraction ratio fs/fu is observed to depend on the B-meson transverse momentum with a significance of 6.0σ. This dependency is driven by the 13 TeV sample (8.7σ), while the results for the other collision energies are not significant when considered separately. Furthermore, the results show a 4.8σ evidence for an increase of fs/fu as a function of collision energy. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.124.122002 |
It is part of: | Physical Review Letters, 2020, vol. 124, num. 12, p. 122002 |
URI: | http://hdl.handle.net/2445/175063 |
Related resource: | https://doi.org/10.1103/PhysRevLett.124.122002 |
ISSN: | 0031-9007 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB)) |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
706229.pdf | 516.36 kB | Adobe PDF | View/Open |
This item is licensed under a Creative Commons License