| Title: |
Observation of the Narrow State X (3872)→ J/ψπ + π − in pp Collisions at s√=1.96 TeV |
| Authors: |
CDF II Collaboration |
| Contributors: |
Campanelli, Mario; Clark, Allan Geoffrey; D'Onofrio, Monica; Liu, Yanwen; Wu, Xin; Zsenei, Andras |
| Source: |
ISSN: 0031-9007 ; Physical review letters, vol. 93, no. 07 (2004) 072001. |
| Publication Year: |
2004 |
| Collection: |
Université de Genève: Archive ouverte UNIGE |
| Subject Terms: |
info:eu-repo/classification/ddc/500.2 |
| Description: |
We report the observation of a narrow state decaying into J/ψπ+π− and produced in 220 pb−1 of p̄ p collisions at s√=1.96 TeV in the CDF II experiment. We observe 730±90 decays. The mass is measured to be 3871.3±0.7(stat)±0.4(syst) MeV/c2, with an observed width consistent with the detector resolution. This is in agreement with the recent observation by the Belle Collaboration of the X(3872) meson. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| Relation: |
unige:38061 |
| Availability: |
https://archive-ouverte.unige.ch/unige:38061 |
| Rights: |
info:eu-repo/semantics/openAccess |
| Accession Number: |
edsbas.BA48F78 |
| Database: |
BASE |