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Search for exotic S =-2 baryons in p(p)over-bar collisions at root s=1.96 TeV

Abulencia A
•
Adelman J
•
Affolder T
altro
SANTI, Lorenzo Gianni
2007
  • journal article

Periodico
PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY
Abstract
A search for a manifestly exotic S=-2 baryon state decaying to Ξ-π-, and its neutral partner decaying to Ξ-π+, has been performed using 220pb-1 of pp̄ collisions at s=1.96TeV collected by the Collider Detector at Fermilab. The Ξ- trajectories were measured in a silicon tracker before their decay, resulting in a sample with low background and excellent position resolution. No evidence was found for S=-2 pentaquark candidates in the invariant mass range of 1600-2100MeV/c2. Upper limits on the product of pentaquark production cross section times its branching fraction to Ξ-π+,-, relative to the cross section of the well-established Ξ(1530) resonance, are presented for neutral and doubly negative candidates with pT>2GeV/c and |y|<1 as a function of pentaquark mass. At 1862MeV/c2, these upper limits for neutral and doubly negative final states were found to be 3.2% and 1.7% at the 90% confidence level, respectively.
DOI
10.1103/PhysRevD.75.032003
WOS
WOS:000244534800010
Archivio
http://hdl.handle.net/11390/694815
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-33846940443
Diritti
metadata only access
Scopus© citazioni
6
Data di acquisizione
Jun 2, 2022
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Web of Science© citazioni
6
Data di acquisizione
Mar 20, 2024
Visualizzazioni
1
Data di acquisizione
Jun 8, 2022
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