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Search for Long-Lived Particles in e<sup>∧</sup>+e<sup>∧</sup>- Collisions

Lees, J. P.
•
Poireau, V.
•
Tisserand, V.
altro
Wu, S. L.
2015
  • journal article

Periodico
PHYSICAL REVIEW LETTERS
Abstract
We present a search for a neutral, long-lived particle L that is produced in e∧{+}e∧{-} collisions and decays at a significant distance from the e∧{+}e∧{-} interaction point into various flavor combinations of two oppositely charged tracks. The analysis uses an e∧{+}e∧{-} data sample with a luminosity of 489.1 fb∧{-1} collected by the BABAR detector at the Υ(4S), Υ(3S), and Υ(2S) resonances and just below the Υ(4S). Fitting the two-track mass distribution in search of a signal peak, we do not observe a significant signal, and set 90% confidence level upper limits on the product of the L production cross section, branching fraction, and reconstruction efficiency for six possible two-body L decay modes as a function of the L mass. The efficiency is given for each final state as a function of the mass, lifetime, and transverse momentum of the candidate, allowing application of the upper limits to any production model. In addition, upper limits are provided on the branching fraction B(B→X-{s}L), where X-{s} is a strange hadronic system.
DOI
10.1103/PhysRevLett.114.171801
WOS
WOS:000353637900003
Archivio
http://hdl.handle.net/11368/2871912
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84930226360
http://journals.aps.org/prl/issues/114/17
Diritti
open access
license:digital rights management non definito
license:digital rights management non definito
FVG url
https://arts.units.it/request-item?handle=11368/2871912
Soggetti
  • Physics and Astronomy...

Scopus© citazioni
30
Data di acquisizione
Jun 15, 2022
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Web of Science© citazioni
22
Data di acquisizione
Mar 11, 2024
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Data di acquisizione
Apr 19, 2024
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