Event-by-event fluctuations of the kaon to pion ratio in central Pb+Pb collisions at 158 GeV per nucleon

SV Afanasiev; Lee Barnby; Robert Barton; Charles Blyth; Peter Jones; John Nelson; Gordon Squier; Timothy Yates

doi:10.1103/PhysRevLett.86.1965

Event-by-event fluctuations of the kaon to pion ratio in central Pb+Pb collisions at 158 GeV per nucleon

SV Afanasiev, Lee Barnby, Robert Barton, Charles Blyth, Peter Jones, John Nelson, Gordon Squier, Timothy Yates

Physics and Astronomy

Research output: Contribution to journal › Article

88 Citations (Scopus)

Abstract

We present the first measurement of fluctuations from event to event in the production of strange particles in collisions of heavy nuclei. The ratio of charged kaons to charged pions is determined for individual central Pb+Pb collisions. After accounting for the fluctuations due to detector resolution and finite number statistics we derive an upper limit on genuine nonstatistical fluctuations, which could be related to a first- or second-order QCD phase transition. Such fluctuations are shown to be very small.

Original language	English
Pages (from-to)	1965-1969
Number of pages	5
Journal	Physical Review Letters
Volume	86
Issue number	10
Early online date	1 Mar 2001
DOIs	https://doi.org/10.1103/PhysRevLett.86.1965
Publication status	Published - 1 Mar 2001

Access to Document

10.1103/PhysRevLett.86.1965

Cite this

@article{d2494641280c4fd6a603a7e0263c021a,

title = "Event-by-event fluctuations of the kaon to pion ratio in central Pb+Pb collisions at 158 GeV per nucleon",

abstract = "We present the first measurement of fluctuations from event to event in the production of strange particles in collisions of heavy nuclei. The ratio of charged kaons to charged pions is determined for individual central Pb+Pb collisions. After accounting for the fluctuations due to detector resolution and finite number statistics we derive an upper limit on genuine nonstatistical fluctuations, which could be related to a first- or second-order QCD phase transition. Such fluctuations are shown to be very small.",

author = "SV Afanasiev and Lee Barnby and Robert Barton and Charles Blyth and Peter Jones and John Nelson and Gordon Squier and Timothy Yates",

year = "2001",

month = mar,

day = "1",

doi = "10.1103/PhysRevLett.86.1965",

language = "English",

volume = "86",

pages = "1965--1969",

journal = "Physical Review Letters",

issn = "1079-7114",

publisher = "American Physical Society (APS)",

number = "10",

}

TY - JOUR

T1 - Event-by-event fluctuations of the kaon to pion ratio in central Pb+Pb collisions at 158 GeV per nucleon

AU - Afanasiev, SV

AU - Barnby, Lee

AU - Barton, Robert

AU - Blyth, Charles

AU - Jones, Peter

AU - Nelson, John

AU - Squier, Gordon

AU - Yates, Timothy

PY - 2001/3/1

Y1 - 2001/3/1

N2 - We present the first measurement of fluctuations from event to event in the production of strange particles in collisions of heavy nuclei. The ratio of charged kaons to charged pions is determined for individual central Pb+Pb collisions. After accounting for the fluctuations due to detector resolution and finite number statistics we derive an upper limit on genuine nonstatistical fluctuations, which could be related to a first- or second-order QCD phase transition. Such fluctuations are shown to be very small.

AB - We present the first measurement of fluctuations from event to event in the production of strange particles in collisions of heavy nuclei. The ratio of charged kaons to charged pions is determined for individual central Pb+Pb collisions. After accounting for the fluctuations due to detector resolution and finite number statistics we derive an upper limit on genuine nonstatistical fluctuations, which could be related to a first- or second-order QCD phase transition. Such fluctuations are shown to be very small.

UR - http://www.scopus.com/inward/record.url?scp=20644462130&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.86.1965

DO - 10.1103/PhysRevLett.86.1965

M3 - Article

C2 - 11289831

SN - 1079-7114

VL - 86

SP - 1965

EP - 1969

JO - Physical Review Letters

JF - Physical Review Letters

IS - 10

ER -

Event-by-event fluctuations of the kaon to pion ratio in central Pb+Pb collisions at 158 GeV per nucleon

Abstract

Access to Document

Fingerprint

Cite this