Observation of two resonances in the Λb0 π± systems and precise measurement of Σb± and Σb∗± properties

Research output: Contribution to journalArticlepeer-review

Authors

  • LHCb Collaboration

External organisations

  • Institution Nikhef National Institute for Subatomic Physics
  • University of Zurich
  • Universidad de Santiago de Compostela
  • University of Bristol
  • University of Michigan
  • LPC
  • University of Cincinnati
  • Laboratori Nazionali dell'Infn di Frascati
  • TU Dortmund University, Germany
  • CERN
  • University of Glasgow
  • Universitat de Barcelona
  • Petersburg Nuclear Physics Institute (PNPI)
  • Imperial College London
  • Universidade Federal Do Rio de Janeiro
  • INFN Padova
  • IN2P3
  • Tsinghua University
  • Sezione INFN di Firenze
  • Ecole Polytechnique Federale de Lausanne
  • Sezione INFN di Ferrara
  • University of Maryland
  • University of Manchester
  • Institute for High Energy Physics (IHEP)
  • Syracuse University
  • Yandex School of Data Analysis
  • INFN Sezione di Cagliari
  • Ruprecht-Karls-Universität Heidelberg
  • University of Warwick

Abstract

The first observation of two structures consistent with resonances in the final states Λb0π- and Λb0π+ is reported using samples of pp collision data collected by the LHCb experiment at s=7 and 8 TeV, corresponding to an integrated luminosity of 3 fb-1. The ground states Σb± and Σb∗± are also confirmed and their masses and widths are precisely measured.

Details

Original languageEnglish
Article number012001
Number of pages9
JournalPhysical Review Letters
Volume122
Publication statusPublished - 11 Jan 2019

ASJC Scopus subject areas