Observation of azimuth-dependent suppression of hadron pairs in electron scattering off nuclei

(CLAS Collaboration)

doi:10.1103/PhysRevLett.129.182501

Observation of azimuth-dependent suppression of hadron pairs in electron scattering off nuclei

(CLAS Collaboration)

Physics

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

Abstract

We present the first measurement of di-hadron angular correlations in electron-nucleus scattering. The data were taken with the CLAS detector and a 5.0 GeV electron beam incident on deuterium, carbon, iron, and lead targets. Relative to deuterium, the nuclear yields of charged-pion pairs show a strong suppression for azimuthally opposite pairs, no suppression for azimuthally nearby pairs, and an enhancement of pairs with large invariant mass. These effects grow with increased nuclear size. The data are qualitatively described by the GiBUU model, which suggests that hadrons form near the nuclear surface and undergo multiple-scattering in nuclei. These results show that angular correlation studies can open a new way to elucidate how hadrons form and interact inside nuclei

Original language	English
Article number	182501
Number of pages	7
Journal	Physical Review Letters
Volume	129
Issue number	18
Early online date	25 Oct 2022
DOIs	https://doi.org/10.1103/PhysRevLett.129.182501
Publication status	Published - 28 Oct 2022

Bibliographical note

© 2022 American Physical Society. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details

Keywords

nucl-ex

Access to Document

10.1103/PhysRevLett.129.182501

2207.06682v2
© 2022 American Physical Society. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details
Accepted author manuscript, 622 KB

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1 Active

Nuclear Physics Consolidated Grant 2021-2024
Jenkins, D. (Principal investigator), Andreyev, A. (Co-investigator), Bashkanov, M. (Co-investigator), Bentley, M. (Co-investigator), Dobaczewski, J. J. (Co-investigator), Laird, A. M. (Co-investigator), Paschalis, S. (Co-investigator), Pastore, A. (Co-investigator), Petri, M. (Co-investigator), Wadsworth, R. (Co-investigator), Watts, D. (Co-investigator) & Zachariou, N. (Co-investigator)
SCIENCE AND TECHNOLOGY FACILITIES COUNCIL (STFC)
1/10/21 → 31/03/25
Project: Research project (funded) › Research
Shining a light on strangeness
Zachariou, N. (Principal investigator)
SCIENCE AND TECHNOLOGY FACILITIES COUNCIL (STFC)
1/09/18 → 31/12/22
Project: Research project (funded) › Research

Cite this

@article{1e8b72eb4de14c09b0a371240562572a,

title = "Observation of azimuth-dependent suppression of hadron pairs in electron scattering off nuclei",

abstract = "We present the first measurement of di-hadron angular correlations in electron-nucleus scattering. The data were taken with the CLAS detector and a 5.0 GeV electron beam incident on deuterium, carbon, iron, and lead targets. Relative to deuterium, the nuclear yields of charged-pion pairs show a strong suppression for azimuthally opposite pairs, no suppression for azimuthally nearby pairs, and an enhancement of pairs with large invariant mass. These effects grow with increased nuclear size. The data are qualitatively described by the GiBUU model, which suggests that hadrons form near the nuclear surface and undergo multiple-scattering in nuclei. These results show that angular correlation studies can open a new way to elucidate how hadrons form and interact inside nuclei",

keywords = "nucl-ex",

author = "{(CLAS Collaboration)} and S. Moran and M. Arratia and Alaoui, {A. El} and H. Hakobyan and Amaryan, {M. J.} and Armstrong, {W. R.} and H. Atac and L. Baashen and Baltzell, {N. A.} and L. Barion and M. Bashkanov and M. Battaglieri and I. Bedlinskiy and B. Benkel and F. Benmokhtar and A. Bianconi and L. Biondo and Biselli, {A. S.} and M. Bondi and F. Bossu and S. Boiarinov and Brinkmann, {K. Th} and Briscoe, {W. J.} and D. Bulumulla and Burkert, {V. D.} and R. Capobianco and Carman, {D. S.} and A. Celentano and V. Chesnokov and T. Chetry and G. Ciullo and Cole, {P. L.} and M. Contalbrigo and G. Costantini and A. D'Angelo and N. Dashyan and Vita, {R. De} and M. Defurne and A. Deur and S. Diehl and C. Dilks and C. Djalali and R. Dupre and H. Egiyan and Fassi, {L. El} and P. Eugenio and S. Fegan and A. Filippi and G. Gavalian and N. Zachariou",

note = "{\textcopyright} 2022 American Physical Society. This is an author-produced version of the published paper. Uploaded in accordance with the publisher{\textquoteright}s self-archiving policy. Further copying may not be permitted; contact the publisher for details",

year = "2022",

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day = "28",

doi = "10.1103/PhysRevLett.129.182501",

language = "English",

volume = "129",

journal = "Physical Review Letters",

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TY - JOUR

T1 - Observation of azimuth-dependent suppression of hadron pairs in electron scattering off nuclei

AU - (CLAS Collaboration)

AU - Moran, S.

AU - Arratia, M.

AU - Alaoui, A. El

AU - Hakobyan, H.

AU - Amaryan, M. J.

AU - Armstrong, W. R.

AU - Atac, H.

AU - Baashen, L.

AU - Baltzell, N. A.

AU - Barion, L.

AU - Bashkanov, M.

AU - Battaglieri, M.

AU - Bedlinskiy, I.

AU - Benkel, B.

AU - Benmokhtar, F.

AU - Bianconi, A.

AU - Biondo, L.

AU - Biselli, A. S.

AU - Bondi, M.

AU - Bossu, F.

AU - Boiarinov, S.

AU - Brinkmann, K. Th

AU - Briscoe, W. J.

AU - Bulumulla, D.

AU - Burkert, V. D.

AU - Capobianco, R.

AU - Carman, D. S.

AU - Celentano, A.

AU - Chesnokov, V.

AU - Chetry, T.

AU - Ciullo, G.

AU - Cole, P. L.

AU - Contalbrigo, M.

AU - Costantini, G.

AU - D'Angelo, A.

AU - Dashyan, N.

AU - Vita, R. De

AU - Defurne, M.

AU - Deur, A.

AU - Diehl, S.

AU - Dilks, C.

AU - Djalali, C.

AU - Dupre, R.

AU - Egiyan, H.

AU - Fassi, L. El

AU - Eugenio, P.

AU - Fegan, S.

AU - Filippi, A.

AU - Gavalian, G.

AU - Zachariou, N.

N1 - © 2022 American Physical Society. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details

PY - 2022/10/28

Y1 - 2022/10/28

N2 - We present the first measurement of di-hadron angular correlations in electron-nucleus scattering. The data were taken with the CLAS detector and a 5.0 GeV electron beam incident on deuterium, carbon, iron, and lead targets. Relative to deuterium, the nuclear yields of charged-pion pairs show a strong suppression for azimuthally opposite pairs, no suppression for azimuthally nearby pairs, and an enhancement of pairs with large invariant mass. These effects grow with increased nuclear size. The data are qualitatively described by the GiBUU model, which suggests that hadrons form near the nuclear surface and undergo multiple-scattering in nuclei. These results show that angular correlation studies can open a new way to elucidate how hadrons form and interact inside nuclei

AB - We present the first measurement of di-hadron angular correlations in electron-nucleus scattering. The data were taken with the CLAS detector and a 5.0 GeV electron beam incident on deuterium, carbon, iron, and lead targets. Relative to deuterium, the nuclear yields of charged-pion pairs show a strong suppression for azimuthally opposite pairs, no suppression for azimuthally nearby pairs, and an enhancement of pairs with large invariant mass. These effects grow with increased nuclear size. The data are qualitatively described by the GiBUU model, which suggests that hadrons form near the nuclear surface and undergo multiple-scattering in nuclei. These results show that angular correlation studies can open a new way to elucidate how hadrons form and interact inside nuclei

KW - nucl-ex

U2 - 10.1103/PhysRevLett.129.182501

DO - 10.1103/PhysRevLett.129.182501

M3 - Article

SN - 0031-9007

VL - 129

JO - Physical Review Letters

JF - Physical Review Letters

IS - 18

M1 - 182501

ER -

Observation of azimuth-dependent suppression of hadron pairs in electron scattering off nuclei

Abstract

Bibliographical note

Keywords

Access to Document

Projects

Nuclear Physics Consolidated Grant 2021-2024

Shining a light on strangeness

Cite this