Bose-Einstein correlations of three charged pions in hadronic Z0 decays

OPAL Collaboration

doi:10.1007/s100529800970

Bose-Einstein correlations of three charged pions in hadronic Z⁰ decays

OPAL Collaboration

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

18 Scopus citations

Abstract

Bose-Einstein Correlations (BEC) of three identical charged pions were studied in 4 × 10⁶ hadronic Z⁰ decays recorded with the OPAL detector at LEP. The genuine three-pion correlations, corrected for the Coulomb effect, were separated from the known two-pion correlations by a new subtraction procedure. A significant genuine three-pion BEC enhancement near threshold was observed having an emitter source radius of r₃ = 0.580 ± 0.004 (stat.) ± 0.029 (syst.) fm and a strength of λ₃ = 0.504 ± 0.010 (stat.) ± 0.041 (syst.). The Coulomb correction was found to increase the λ₃ value by ∼ 9% and to reduce r₃ by ∼ 6%. The measured λ₃ corresponds to a value of 0.707 ± 0.014 (stat.) ± 0.078 (syst.) when one takes into account the three-pion sample purity. A relation between the two-pion and the three-pion source parameters is discussed.

Original language	English
Pages (from-to)	239-248
Number of pages	10
Journal	European Physical Journal C
Volume	5
Issue number	2
DOIs	https://doi.org/10.1007/s100529800970
State	Published - 1 Jan 1998
Externally published	Yes

ASJC Scopus subject areas

Engineering (miscellaneous)
Physics and Astronomy (miscellaneous)

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10.1007/s100529800970

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@article{83e72b9e12d64b7e98a2a83cb0286b17,

title = "Bose-Einstein correlations of three charged pions in hadronic Z0 decays",

abstract = "Bose-Einstein Correlations (BEC) of three identical charged pions were studied in 4 × 106 hadronic Z0 decays recorded with the OPAL detector at LEP. The genuine three-pion correlations, corrected for the Coulomb effect, were separated from the known two-pion correlations by a new subtraction procedure. A significant genuine three-pion BEC enhancement near threshold was observed having an emitter source radius of r3 = 0.580 ± 0.004 (stat.) ± 0.029 (syst.) fm and a strength of λ3 = 0.504 ± 0.010 (stat.) ± 0.041 (syst.). The Coulomb correction was found to increase the λ3 value by ∼ 9% and to reduce r3 by ∼ 6%. The measured λ3 corresponds to a value of 0.707 ± 0.014 (stat.) ± 0.078 (syst.) when one takes into account the three-pion sample purity. A relation between the two-pion and the three-pion source parameters is discussed.",

author = "{OPAL Collaboration} and K. Ackerstaff and G. Alexander and J. Allison and N. Altekamp and Anderson, {K. J.} and S. Anderson and S. Arcelli and S. Asai and Ashby, {S. F.} and D. Axen and G. Azuelos and Ball, {A. H.} and E. Barberio and Barlow, {R. J.} and R. Bartoldus and Batley, {J. R.} and S. Baumann and J. Bechtluft and T. Behnke and Bell, {K. W.} and G. Bella and S. Bentvelsen and S. Bethke and S. Betts and O. Biebel and A. Biguzzi and Bird, {S. D.} and V. Blobel and Bloodworth, {I. J.} and M. Bobinski and P. Bock and J. B{\"o}hme and M. Boutemeur and S. Braibant and P. Bright-Thomas and Brown, {R. M.} and Burckhart, {H. J.} and C. Burgard and R. B{\"u}rgin and P. Capiluppi and Carnegie, {R. K.} and Carter, {A. A.} and Carter, {J. R.} and Chang, {C. Y.} and Charlton, {D. G.} and D. Chrisman and C. Ciocca and Clarke, {P. E.L.} and E. Clay and R. Folman",

year = "1998",

month = jan,

day = "1",

doi = "10.1007/s100529800970",

language = "English",

volume = "5",

pages = "239--248",

journal = "European Physical Journal C",

issn = "1434-6044",

publisher = "Springer New York",

number = "2",

}

TY - JOUR

T1 - Bose-Einstein correlations of three charged pions in hadronic Z0 decays

AU - OPAL Collaboration

AU - Ackerstaff, K.

AU - Alexander, G.

AU - Allison, J.

AU - Altekamp, N.

AU - Anderson, K. J.

AU - Anderson, S.

AU - Arcelli, S.

AU - Asai, S.

AU - Ashby, S. F.

AU - Axen, D.

AU - Azuelos, G.

AU - Ball, A. H.

AU - Barberio, E.

AU - Barlow, R. J.

AU - Bartoldus, R.

AU - Batley, J. R.

AU - Baumann, S.

AU - Bechtluft, J.

AU - Behnke, T.

AU - Bell, K. W.

AU - Bella, G.

AU - Bentvelsen, S.

AU - Bethke, S.

AU - Betts, S.

AU - Biebel, O.

AU - Biguzzi, A.

AU - Bird, S. D.

AU - Blobel, V.

AU - Bloodworth, I. J.

AU - Bobinski, M.

AU - Bock, P.

AU - Böhme, J.

AU - Boutemeur, M.

AU - Braibant, S.

AU - Bright-Thomas, P.

AU - Brown, R. M.

AU - Burckhart, H. J.

AU - Burgard, C.

AU - Bürgin, R.

AU - Capiluppi, P.

AU - Carnegie, R. K.

AU - Carter, A. A.

AU - Carter, J. R.

AU - Chang, C. Y.

AU - Charlton, D. G.

AU - Chrisman, D.

AU - Ciocca, C.

AU - Clarke, P. E.L.

AU - Clay, E.

AU - Folman, R.

PY - 1998/1/1

Y1 - 1998/1/1

N2 - Bose-Einstein Correlations (BEC) of three identical charged pions were studied in 4 × 106 hadronic Z0 decays recorded with the OPAL detector at LEP. The genuine three-pion correlations, corrected for the Coulomb effect, were separated from the known two-pion correlations by a new subtraction procedure. A significant genuine three-pion BEC enhancement near threshold was observed having an emitter source radius of r3 = 0.580 ± 0.004 (stat.) ± 0.029 (syst.) fm and a strength of λ3 = 0.504 ± 0.010 (stat.) ± 0.041 (syst.). The Coulomb correction was found to increase the λ3 value by ∼ 9% and to reduce r3 by ∼ 6%. The measured λ3 corresponds to a value of 0.707 ± 0.014 (stat.) ± 0.078 (syst.) when one takes into account the three-pion sample purity. A relation between the two-pion and the three-pion source parameters is discussed.

AB - Bose-Einstein Correlations (BEC) of three identical charged pions were studied in 4 × 106 hadronic Z0 decays recorded with the OPAL detector at LEP. The genuine three-pion correlations, corrected for the Coulomb effect, were separated from the known two-pion correlations by a new subtraction procedure. A significant genuine three-pion BEC enhancement near threshold was observed having an emitter source radius of r3 = 0.580 ± 0.004 (stat.) ± 0.029 (syst.) fm and a strength of λ3 = 0.504 ± 0.010 (stat.) ± 0.041 (syst.). The Coulomb correction was found to increase the λ3 value by ∼ 9% and to reduce r3 by ∼ 6%. The measured λ3 corresponds to a value of 0.707 ± 0.014 (stat.) ± 0.078 (syst.) when one takes into account the three-pion sample purity. A relation between the two-pion and the three-pion source parameters is discussed.

UR - http://www.scopus.com/inward/record.url?scp=0038901982&partnerID=8YFLogxK

U2 - 10.1007/s100529800970

DO - 10.1007/s100529800970

M3 - Article

AN - SCOPUS:0038901982

SN - 1434-6044

VL - 5

SP - 239

EP - 248

JO - European Physical Journal C

JF - European Physical Journal C

IS - 2

ER -

Bose-Einstein correlations of three charged pions in hadronic Z⁰ decays

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