期刊
PHYSICAL REVIEW D
卷 91, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.91.052011
关键词
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资金
- U.S. Department of Energy
- National Science Foundation
- Italian Istituto Nazionale di Fisica Nucleare
- Ministry of Education, Culture, Sports, Science and Technology of Japan
- Natural Sciences and Engineering Research Council of Canada
- National Science Council of the Republic of China
- Swiss National Science Foundation
- A. P. Sloan Foundation
- Bundesministerium fur Bildung und Forschung, Germany
- Korean World Class University Program, the National Research Foundation of Korea
- Science and Technology Facilities Council, United Kingdom
- Royal Society, United Kingdom
- Russian Foundation for Basic Research
- Ministerio de Ciencia e Innovacion, Spain
- Programa Consolider-Ingenio, Spain
- Slovak RD Agency
- Academy of Finland
- Australian Research Council (ARC)
- EU community Marie Curie Fellowship [302103]
- STFC [ST/K000748/1, ST/K00137X/1, PP/E003206/1, ST/L00352X/1, ST/J005568/1, ST/M000761/1, ST/H00369X/1, ST/K00140X/1, ST/H001085/2, ST/L006464/1, PP/E000460/1, ST/H001085/1, ST/N000455/1] Funding Source: UKRI
- ICREA Funding Source: Custom
- Science and Technology Facilities Council [ST/K000748/1, ST/N000455/1, ST/J005568/1, ST/H00369X/1, ST/K00140X/1 LHCb Upgrades, ST/K00140X/1 MICE/UKNF, ST/L00352X/1, 1104890, ST/M000761/1, ST/K00140X/1 ATLAS, ST/K00140X/1 T2K, ST/K00140X/1 SuperNEMO, ST/M001474/1, ST/H001085/1, 1368329, PP/E003206/1, ST/K00137X/1, ST/K001418/1, ST/L006464/1, PP/E000460/1, ST/K00140X/1 LHCb, ST/K00140X/1 MICE, ST/K00140X/1, ST/H001085/2] Funding Source: researchfish
Production of the Y(1S) meson in association with a vector boson is a rare process in the standard model with a cross section predicted to be below the sensitivity of the Tevatron. Observation of this process could signify contributions not described by the standard model or reveal limitations with the current nonrelativistic quantum-chromodynamic models used to calculate the cross section. We perform a search for this process using the full Run II data set collected by the CDF II detector corresponding to an integrated luminosity of 9.4 fb(-1). The search considers the Y -> mu mu decay and the decay of the W and Z bosons into muons and electrons. In these purely leptonic decay channels, we observe one YW candidate with an expected background of 1.2 +/- 0.5 events, and one YZ candidate with an expected background of 0.1 +/- 0.1 events. Both observations are consistent with the predicted background contributions. The resulting upper limits on the cross section for Y + W/Z production are the most sensitive reported from a single experiment and place restrictions on potential contributions from non-standard-model physics.
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