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Improved determination of the sample composition of dimuon events produced in p(p)over-bar collisions at root s=1.96 TeV

Aaltonen T.
•
ÁlvarezGonzález B.
•
Amerio S.
altro
Zucchelli S.
2011
  • journal article

Periodico
THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS
Abstract
We use a new method to estimate with 5% accuracy the contribution of pion and kaon in-flight-decays to the dimuon data set acquired with the CDF detector. Based on this improved estimate, we show that the total number and the properties of the collected dimuon events are not yet accounted for by ordinary sources of dimuons which also include the contributions, as measured in the data, of heavy flavor, gamma, and Drell-Yan production in addition to muons mimicked by hadronic punchthrough. The number of unaccounted events corresponds to (12.8 +/- 3.2)% of the b (b) over bar production. We find that (23 +/- 6)% of the unaccounted events contain additional muon candidates. For comparison, this fraction is (6.9 +/- 0.4)% for events due to b (b) over bar production.
DOI
10.1140/epjc/s10052-011-1720-4
WOS
WOS:000294476700017
Archivio
http://hdl.handle.net/11390/879376
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84883186585
Diritti
metadata only access
Scopus© citazioni
1
Data di acquisizione
Jun 14, 2022
Vedi dettagli
Web of Science© citazioni
1
Data di acquisizione
Mar 12, 2024
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