Coherent beam-beam mode in the LHC
  Observations of single bunch beam-beam coherent modes during dedicated experiments in the LHC are presented. Their role in standard operation for physics is discussed and, in particular, candidates of beam-beam coherent mode driven unstable by the machine impedance are presented. 
X. Buffat (EPFL, Lausanne) (CERN), R. Calaga (CERN), R. Giachino   (CERN), W. Herr (CERN), G. Papotti (CERN), T. Pieloni (CE...
physics.acc-ph