Exotic particle searches with STAR at RHIC

Sonia Kabana

doi:10.1556/APH.24.2005.1-4.44

Exotic particle searches with STAR at RHIC

Sonia Kabana

Yale University
University of Bern

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

We present preliminary results of the STAR experiment at RHIC on exotic particle searches in minimum bias Au+Au collisions at √s_N _N = 200 GeV. We observe a narrow peak at 1734±0.5±5 MeV in the ΛK_s⁰ invariant mass with width consistent with the experimental resolution of about 6 MeV within the errors. The statistical significance can be quantified between 3 and 6 σ depending on cuts and methods. If this peak corresponds to a real particle state it would be a candidate for the N⁰ or the Ξ⁰ I = 1/2 pentaquart states.

Original language	English
Pages (from-to)	321-328
Number of pages	8
Journal	Acta Physica Hungarica, Series A: Heavy Ion Physics
Volume	24
Issue number	1-4
DOIs	https://doi.org/10.1556/APH.24.2005.1-4.44
State	Published - 2005
Externally published	Yes

Keywords

Pentaquarks
RHIC
STAR
Ultrarelativistic heavy ion collisions

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10.1556/APH.24.2005.1-4.44

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abstract = "We present preliminary results of the STAR experiment at RHIC on exotic particle searches in minimum bias Au+Au collisions at √sN N = 200 GeV. We observe a narrow peak at 1734±0.5±5 MeV in the ΛKs0 invariant mass with width consistent with the experimental resolution of about 6 MeV within the errors. The statistical significance can be quantified between 3 and 6 σ depending on cuts and methods. If this peak corresponds to a real particle state it would be a candidate for the N0 or the Ξ0 I = 1/2 pentaquart states.",

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AB - We present preliminary results of the STAR experiment at RHIC on exotic particle searches in minimum bias Au+Au collisions at √sN N = 200 GeV. We observe a narrow peak at 1734±0.5±5 MeV in the ΛKs0 invariant mass with width consistent with the experimental resolution of about 6 MeV within the errors. The statistical significance can be quantified between 3 and 6 σ depending on cuts and methods. If this peak corresponds to a real particle state it would be a candidate for the N0 or the Ξ0 I = 1/2 pentaquart states.

KW - Pentaquarks

KW - RHIC

KW - STAR

KW - Ultrarelativistic heavy ion collisions

UR - https://www.scopus.com/pages/publications/28044453069

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JO - Acta Physica Hungarica, Series A: Heavy Ion Physics

JF - Acta Physica Hungarica, Series A: Heavy Ion Physics

IS - 1-4

ER -

Exotic particle searches with STAR at RHIC

Abstract

Keywords

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