1. V. Khachatryan et al. (CMS Collab.), Phys. Rev. Lett. 105, 032001 (2010).
2. V. Khachatryan et al. (CMS Collab.), J. High Energy Phys. 05, 029 (2011).
3. A. M. Sirunyan et al. (CMS Collab.), Phys. Rev. C
97, 064912 (2018).
4. S. Chatrchyan et al. (CMS Collab.), J. Instrum. 3, S08004 (2008).
5. CMS Collab., Physics Analysis Summary CMS-PAS-FSQ-15-009 (2018), https://cds.cern.ch/record/2318575.