@article{10902/38431,
year = {2025},
month = {3},
url = {https://hdl.handle.net/10902/38431},
abstract = {A measurement of the ratio of branching fractions R(J/y)=B(B+c-J/yt+vr)/B(B+c-J/yu+vu) in the J/y-u+u¯,t+-u+vuv¯t decay channel is presented. This measurement uses a sample of proton-proton collision data collected at a ceter-of-mass energy of 13 TeV by the CMS experiment in 2018, corresponding integrated luminosity of 59.7 fb-1. The measured ratio, R(J/y)=0.17+0.18-0.17(stat)+0.21-0.22(syst)+0.19-0.18(theo)=0.17±0.33, agrees with the value of 0.2582±0.0038 predicted by the standard model, which assumes lepton flavor universality. By testing lepton flavor universality, this measurement is a probe of new physics using B+c mesons, which are currently only produced at the LHC.},
organization = {We congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC and thank the technical and administrative staffs at CERN and at other CMS institutes for their contributions to the success of the CMS effort. In addition, we gratefully acknowledge the computing centers and personnel of the Worldwide LHC Computing Grid and other centers for delivering so effectively the computing infrastructure essential to our analyses. Finally, we acknowledge the enduring support for the construction and operation of the LHC, the CMSdetector, and the supporting computing infrastructure provided by the following funding agencies: SC (Armenia), BMBWFandFWF(Austria); FNRS and FWO (Belgium); CNPq,CAPES,FAPERJ,FAPERGS,andFAPESP(Brazil); MESandBNSF(Bulgaria);CERN;CAS,MoST,andNSFC (China); MINCIENCIAS (Colombia); MSES and CSF (Croatia); RIF (Cyprus); SENESCYT (Ecuador); ERC PRG, RVTT3, and MoER TK202 (Estonia); Academy of Finland, MEC, and HIP (Finland); CEA and CNRS/IN2P3 (France); SRNSF (Georgia); BMBF, DFG, and HGF (Germany); GSRI (Greece); NKFIH (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); MSIP and NRF (Republic of Korea); MES (Latvia); LMTLT (Lithuania); MOE and UM (Malaysia); BUAP, CINVESTAV, CONACYT, LNS, SEP, and UASLP-FAI (Mexico); MOS (Montenegro); MBIE (New Zealand); PAEC (Pakistan); MES and NSC (Poland); FCT (Portugal); MESTD (Serbia); MCIN/AEI and PCTI (Spain); MOSTR (Sri Lanka); Swiss Funding Agencies (Switzerland); MST (Taipei); MHESI and NSTDA (Thailand); TUBITAK and TENMAK (Turkey); NASU (Ukraine); STFC (United Kingdom); and DOE and NSF (USA).},
publisher = {American Physical Society},
publisher = {Physical Review D, 2025, 111, L051102},
title = {Test of lepton flavor universality in semileptonic B+c meson decays in proton-proton collisions at V¯s=13 TeV},
author = {Hayrapetyan, A. and Bhowmik, Sandeep and Blanco Fernández, Sergio and Brochero Cifuentes, Javier Andrés and Cabrillo Bartolomé, José Ibán and Calderón Tazón, Alicia and Duarte Campderros, Jorge and Fernández García, Marcos and Gómez Gramuglio, Gervasio and Lasaosa García, Clara and López Ruiz, Rubén and Martínez Rivero, Celso and Martínez Ruiz del Árbol, Pablo and Matorras Weinig, Francisco and Matorras Cuevas, Pablo and Navarrete Ramos, Efrén and Piedra Gómez, Jonatan and Scodellaro, Luca and Vila Álvarez, Iván and Vizán García, Jesús Manuel},
}