Abstract
A search for the flavor-changing neutral-current decay Λc+→pμ+μ- is reported using a data set corresponding to an integrated luminosity of 3.0 fb-1 collected by the LHCb Collaboration. No significant signal is observed outside of the dimuon mass regions around the φ and ω resonances, and an upper limit is placed on the branching fraction of B(Λc+→pμ+μ-)<7.7(9.6)×10-8 at 90%(95%) confidence level. A significant signal is observed in the ω dimuon mass region for the first time.
| Original language | English |
|---|---|
| Article number | 091101 |
| Journal | Physical Review D |
| Volume | 97 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 1 May 2018 |
Funding
We express our gratitude to our colleagues in the CERN accelerator departments for the excellent performance of the LHC. We thank the technical and administrative staff at the LHCb institutes. We acknowledge support from CERN and from the national agencies CAPES, CNPq, FAPERJ, and FINEP (Brazil); MOST and NSFC (China); CNRS/IN2P3 (France); BMBF, DFG, and MPG (Germany); INFN (Italy); NWO (The Netherlands); MNiSW and NCN (Poland); MEN/IFA (Romania); MinES and FASO (Russia); MinECo (Spain); SNSF and SER (Switzerland); NASU (Ukraine); STFC (United Kingdom); and NSF (USA). We acknowledge the computing resources that are provided by CERN, IN2P3 (France), KIT and DESY (Germany), INFN (Italy), SURF (The Netherlands), PIC (Spain), GridPP (United Kingdom), RRCKI and Yandex LLC (Russia), CSCS (Switzerland), IFIN-HH (Romania), CBPF (Brazil), PL-GRID (Poland), and OSC (USA). We are indebted to the communities behind the multiple open-source software packages on which we depend. Individual groups or members have received support from AvH Foundation (Germany); EPLANET, Marie Skłodowska-Curie Actions and ERC (European Union); ANR, Labex P2IO and OCEVU, and Région Auvergne-Rhône-Alpes (France); RFBR, RSF and Yandex LLC (Russia); GVA, XuntaGal and GENCAT (Spain); and Herchel Smith Fund, the Royal Society, the English-Speaking Union and the Leverhulme Trust (United Kingdom).
| Funders | Funder number |
|---|---|
| Not added | ST/J004332/1, ST/N000250/1, 1681016, ST/K001604/1, ST/K003410/1, 1796908, ST/G005974/1, ST/H006737/1, ST/N000234/1, ST/N000463/1, ST/N000455/1, ST/L003163/1 |
| EPLANET | |
| Herchel Smith Fund | |
| MinES | |
| OCEVU | |
| XuntaGal | |
| Yandex LLC | |
| National Science Foundation | |
| Alexander von Humboldt-Stiftung | |
| H2020 Marie Skłodowska-Curie Actions | |
| CERN | |
| Science and Technology Facilities Council | LHCb, GRIDPP, LHCb Upgrades, ST/N000242/1 |
| Leverhulme Trust | |
| Royal Society | |
| English-Speaking Union | |
| European Research Council | |
| Deutsche Forschungsgemeinschaft | |
| Agence Nationale de la Recherche | |
| Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung | 166208 |
| National Natural Science Foundation of China | |
| Russian Foundation for Basic Research | |
| Coordenação de Aperfeiçoamento de Pessoal de Nível Superior | |
| Bundesministerium für Bildung und Forschung | |
| Nederlandse Organisatie voor Wetenschappelijk Onderzoek | |
| Generalitat Valenciana | |
| Conselho Nacional de Desenvolvimento Científico e Tecnológico | |
| Instituto Nazionale di Fisica Nucleare | |
| Narodowe Centrum Nauki | |
| Ministerstwo Nauki i Szkolnictwa Wyższego | |
| Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro | |
| Ministry of Science and Technology, Taiwan | |
| National Academy of Sciences of Ukraine | |
| Centre National de la Recherche Scientifique | |
| Financiadora de Estudos e Projetos | |
| Russian Science Foundation | |
| Région Auvergne-Rhône-Alpes | |
| Institut national de physique nucléaire et de physique des particules | |
| Federal Agency for Scientific Organizations | |
| Sociedad Española de Reumatología |
