Measurement of Two-Particle Correlations of Hadrons in e+e-Collisions at Belle

Belle Collaboration

doi:10.1103/PhysRevLett.128.142005

Measurement of Two-Particle Correlations of Hadrons in e+e-Collisions at Belle

Belle Collaboration

Department of Physics

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

6 Citations (Scopus)

Abstract

The measurement of two-particle angular correlation functions in high-multiplicity e+e-collisions at s=10.52 GeV is reported. In this study, the 89.5 fb-1 of hadronic e+e-annihilation data collected by the Belle detector at KEKB are used. Two-particle angular correlation functions are measured in the full relative azimuthal angle (Δφ) and three units of pseudorapidity (Δη), defined by either the electron beam axis or the event-shape thrust axis, and are studied as a function of charged-particle multiplicity. The measurement in the thrust axis analysis, with mostly outgoing quark pairs determining the reference axis, is sensitive to the region of additional soft gluon emissions. No significant anisotropic collective behavior is observed with either coordinate analyses. Near-side jet correlations appear to be absent in the thrust axis analysis. The measurements are compared to predictions from various event generators and are expected to provide new constraints to the phenomenological models in the low-energy regime.

Original language	English
Article number	142005
Journal	Physical review letters
Volume	128
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevLett.128.142005
Publication status	Published - 2022 Apr 8

Bibliographical note

Publisher Copyright:
© 2022 authors. Published by the American Physical Society.

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.128.142005

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@article{056ae48c6dae49f190a10c0960dbacd7,

title = "Measurement of Two-Particle Correlations of Hadrons in e+e-Collisions at Belle",

abstract = "The measurement of two-particle angular correlation functions in high-multiplicity e+e-collisions at s=10.52 GeV is reported. In this study, the 89.5 fb-1 of hadronic e+e-annihilation data collected by the Belle detector at KEKB are used. Two-particle angular correlation functions are measured in the full relative azimuthal angle (Δφ) and three units of pseudorapidity (Δη), defined by either the electron beam axis or the event-shape thrust axis, and are studied as a function of charged-particle multiplicity. The measurement in the thrust axis analysis, with mostly outgoing quark pairs determining the reference axis, is sensitive to the region of additional soft gluon emissions. No significant anisotropic collective behavior is observed with either coordinate analyses. Near-side jet correlations appear to be absent in the thrust axis analysis. The measurements are compared to predictions from various event generators and are expected to provide new constraints to the phenomenological models in the low-energy regime.",

author = "{Belle Collaboration} and Chen, {Y. C.} and Lee, {Y. J.} and P. Chang and I. Adachi and H. Aihara and {Al Said}, S. and Asner, {D. M.} and T. Aushev and R. Ayad and V. Babu and P. Behera and K. Belous and J. Bennett and M. Bessner and T. Bilka and D. Bodrov and J. Borah and M. Bra{\v c}ko and P. Branchini and Browder, {T. E.} and A. Budano and M. Campajola and D. {\v C}ervenkov and Chang, {M. C.} and V. Chekelian and Cheon, {B. G.} and K. Chilikin and Cho, {H. E.} and K. Cho and Cho, {S. J.} and Choi, {S. K.} and Y. Choi and D. Cinabro and S. Das and {De Nardo}, G. and {De Pietro}, G. and R. Dhamija and {Di Capua}, F. and J. Dingfelder and Dong, {T. V.} and D. Dossett and D. Epifanov and T. Ferber and Fulsom, {B. G.} and R. Garg and V. Gaur and A. Giri and P. Goldenzweig and T. Gu and E. Won",

note = "Publisher Copyright: {\textcopyright} 2022 authors. Published by the American Physical Society.",

year = "2022",

month = apr,

day = "8",

doi = "10.1103/PhysRevLett.128.142005",

language = "English",

volume = "128",

journal = "Physical review letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "14",

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TY - JOUR

T1 - Measurement of Two-Particle Correlations of Hadrons in e+e-Collisions at Belle

AU - Belle Collaboration

AU - Chen, Y. C.

AU - Lee, Y. J.

AU - Chang, P.

AU - Adachi, I.

AU - Aihara, H.

AU - Al Said, S.

AU - Asner, D. M.

AU - Aushev, T.

AU - Ayad, R.

AU - Babu, V.

AU - Behera, P.

AU - Belous, K.

AU - Bennett, J.

AU - Bessner, M.

AU - Bilka, T.

AU - Bodrov, D.

AU - Borah, J.

AU - Bračko, M.

AU - Branchini, P.

AU - Browder, T. E.

AU - Budano, A.

AU - Campajola, M.

AU - Červenkov, D.

AU - Chang, M. C.

AU - Chekelian, V.

AU - Cheon, B. G.

AU - Chilikin, K.

AU - Cho, H. E.

AU - Cho, K.

AU - Cho, S. J.

AU - Choi, S. K.

AU - Choi, Y.

AU - Cinabro, D.

AU - Das, S.

AU - De Nardo, G.

AU - De Pietro, G.

AU - Dhamija, R.

AU - Di Capua, F.

AU - Dingfelder, J.

AU - Dong, T. V.

AU - Dossett, D.

AU - Epifanov, D.

AU - Ferber, T.

AU - Fulsom, B. G.

AU - Garg, R.

AU - Gaur, V.

AU - Giri, A.

AU - Goldenzweig, P.

AU - Gu, T.

AU - Won, E.

PY - 2022/4/8

Y1 - 2022/4/8

N2 - The measurement of two-particle angular correlation functions in high-multiplicity e+e-collisions at s=10.52 GeV is reported. In this study, the 89.5 fb-1 of hadronic e+e-annihilation data collected by the Belle detector at KEKB are used. Two-particle angular correlation functions are measured in the full relative azimuthal angle (Δφ) and three units of pseudorapidity (Δη), defined by either the electron beam axis or the event-shape thrust axis, and are studied as a function of charged-particle multiplicity. The measurement in the thrust axis analysis, with mostly outgoing quark pairs determining the reference axis, is sensitive to the region of additional soft gluon emissions. No significant anisotropic collective behavior is observed with either coordinate analyses. Near-side jet correlations appear to be absent in the thrust axis analysis. The measurements are compared to predictions from various event generators and are expected to provide new constraints to the phenomenological models in the low-energy regime.

AB - The measurement of two-particle angular correlation functions in high-multiplicity e+e-collisions at s=10.52 GeV is reported. In this study, the 89.5 fb-1 of hadronic e+e-annihilation data collected by the Belle detector at KEKB are used. Two-particle angular correlation functions are measured in the full relative azimuthal angle (Δφ) and three units of pseudorapidity (Δη), defined by either the electron beam axis or the event-shape thrust axis, and are studied as a function of charged-particle multiplicity. The measurement in the thrust axis analysis, with mostly outgoing quark pairs determining the reference axis, is sensitive to the region of additional soft gluon emissions. No significant anisotropic collective behavior is observed with either coordinate analyses. Near-side jet correlations appear to be absent in the thrust axis analysis. The measurements are compared to predictions from various event generators and are expected to provide new constraints to the phenomenological models in the low-energy regime.

UR - http://www.scopus.com/inward/record.url?scp=85128887140&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.128.142005

DO - 10.1103/PhysRevLett.128.142005

M3 - Article

C2 - 35476485

AN - SCOPUS:85128887140

SN - 0031-9007

VL - 128

JO - Physical review letters

JF - Physical review letters

IS - 14

M1 - 142005

ER -

Measurement of Two-Particle Correlations of Hadrons in e+e-Collisions at Belle

Abstract

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