Measurement of elastic electroproduction of φ mesons at HERA

H1 Collaboration

doi:10.1016/S0370-2693(00)00613-4

Measurement of elastic electroproduction of φ mesons at HERA

H1 Collaboration

Bergische Universität Gesamthochschule Wuppertal
P.N. Lebedev Physical Institute of the Russian Academy of Sciences
c/o DESY
Universités Paris VI and VII
Institute for Theoretical and Experimental Physics
University of Manchester
Yerevan Physics Institute
University of Heidelberg
RWTH Aachen University
Laboratoire de l'Accélérateur Linéaire
University of Dortmund
Max-Planck-Institut für Kernphysik
Institute of Experimental Physics Slovak Academy of Sciences
Universität Hamburg
University of Liverpool
Max-Planck-Institut für Physik
Université Paris-Sud
CCLRC Rutherford Appleton Laboratory
Inter-University Institute for High Energies ULB-VUB
University of Antwerp
Dept. Fis. Ap. CINVESTAV
Institut Pierre Simon Laplace, CNRS and CEA
Institute of Physics of the Czech Academy of Sciences
Christian-Albrechts-University Kiel
Lund University
European Organization for Nuclear Research
Queen Mary University of London
University of Birmingham
Paul Scherrer Institut
ETH Zurich
Universität Karlsruhe/Forschungszentrum Karlsruhe
Physik-Institut der Universität Zürich
Charles University
Institute for Nuclear Physics
Lancaster University
Joint Institute for Nuclear Research, Dubna
Humboldt-Universität zu Berlin
University of P.J. Šafárik
University Roma Tre

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

Abstract

The elastic electroproduction of φ mesons is studied at HERA with the H1 detector for photon virtualities 1 < Q² < 15 GeV² and hadronic centre of mass energies 40 < W < 130 GeV. The Q² and t dependences of the cross section are extracted (t being the square of the four-momentum transfer to the target proton). When plotted as function of (Q² + M(v)/²) and scaled by the appropriate SU(5) quark charge factor, the φ meson cross section agrees within errors with the cross sections of the vector mesons V = p, ω and J/ψ. A detailed analysis is performed of the φ meson polarisation state and the ratio of the production cross sections for longitudinally and transversely polarised φ mesons is determined. A small but significant violation of s-channel helicity conservation (SCHC) is observed. (C) 2000 Elsevier Science B.V.

Original language	English
Pages (from-to)	360-372
Number of pages	13
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	483
Issue number	4
DOIs	https://doi.org/10.1016/S0370-2693(00)00613-4
Publication status	Published - 22 Jun 2000

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10.1016/S0370-2693(00)00613-4

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@article{a209a977f2644657aec816c9d23fe60d,

title = "Measurement of elastic electroproduction of φ mesons at HERA",

abstract = "The elastic electroproduction of φ mesons is studied at HERA with the H1 detector for photon virtualities 1 < Q2 < 15 GeV2 and hadronic centre of mass energies 40 < W < 130 GeV. The Q2 and t dependences of the cross section are extracted (t being the square of the four-momentum transfer to the target proton). When plotted as function of (Q2 + M(v)/2) and scaled by the appropriate SU(5) quark charge factor, the φ meson cross section agrees within errors with the cross sections of the vector mesons V = p, ω and J/ψ. A detailed analysis is performed of the φ meson polarisation state and the ratio of the production cross sections for longitudinally and transversely polarised φ mesons is determined. A small but significant violation of s-channel helicity conservation (SCHC) is observed. (C) 2000 Elsevier Science B.V.",

author = "\{H1 Collaboration\} and C. Adloff and V. Andreev and B. Andrieu and V. Arkadov and A. Astvatsatourov and I. Ayyaz and A. Babaev and J. B{\"a}hr and P. Baranov and E. Barrelet and W. Bartel and U. Bassler and P. Bate and A. Beglarian and O. Behnke and C. Beier and A. Belousov and T. Benisch and Ch Berger and G. Bernardi and T. Berndt and Bizot, \{J. C.\} and K. Borras and V. Boudry and W. Braunschweig and V. Brisson and Br{\"o}ker, \{H. B.\} and Brown, \{D. P.\} and W. Br{\"u}ckner and P. Bruel and D. Bruncko and J. B{\"u}rger and B{\"u}sser, \{F. W.\} and A. Bunyatyan and H. Burkhardt and A. Burrage and G. Buschhorn and Campbell, \{A. J.\} and J. Cao and T. Carli and S. Caron and E. Chabert and D. Clarke and B. Clerbaux and C. Collard and Contreras, \{J. G.\} and Coughlan, \{J. A.\} and Cousinou, \{M. C.\} and Y. Sirois and A. Specka",

year = "2000",

month = jun,

day = "22",

doi = "10.1016/S0370-2693(00)00613-4",

language = "English",

volume = "483",

pages = "360--372",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

number = "4",

}

TY - JOUR

T1 - Measurement of elastic electroproduction of φ mesons at HERA

AU - H1 Collaboration

AU - Adloff, C.

AU - Andreev, V.

AU - Andrieu, B.

AU - Arkadov, V.

AU - Astvatsatourov, A.

AU - Ayyaz, I.

AU - Babaev, A.

AU - Bähr, J.

AU - Baranov, P.

AU - Barrelet, E.

AU - Bartel, W.

AU - Bassler, U.

AU - Bate, P.

AU - Beglarian, A.

AU - Behnke, O.

AU - Beier, C.

AU - Belousov, A.

AU - Benisch, T.

AU - Berger, Ch

AU - Bernardi, G.

AU - Berndt, T.

AU - Bizot, J. C.

AU - Borras, K.

AU - Boudry, V.

AU - Braunschweig, W.

AU - Brisson, V.

AU - Bröker, H. B.

AU - Brown, D. P.

AU - Brückner, W.

AU - Bruel, P.

AU - Bruncko, D.

AU - Bürger, J.

AU - Büsser, F. W.

AU - Bunyatyan, A.

AU - Burkhardt, H.

AU - Burrage, A.

AU - Buschhorn, G.

AU - Campbell, A. J.

AU - Cao, J.

AU - Carli, T.

AU - Caron, S.

AU - Chabert, E.

AU - Clarke, D.

AU - Clerbaux, B.

AU - Collard, C.

AU - Contreras, J. G.

AU - Coughlan, J. A.

AU - Cousinou, M. C.

AU - Sirois, Y.

AU - Specka, A.

PY - 2000/6/22

Y1 - 2000/6/22

N2 - The elastic electroproduction of φ mesons is studied at HERA with the H1 detector for photon virtualities 1 < Q2 < 15 GeV2 and hadronic centre of mass energies 40 < W < 130 GeV. The Q2 and t dependences of the cross section are extracted (t being the square of the four-momentum transfer to the target proton). When plotted as function of (Q2 + M(v)/2) and scaled by the appropriate SU(5) quark charge factor, the φ meson cross section agrees within errors with the cross sections of the vector mesons V = p, ω and J/ψ. A detailed analysis is performed of the φ meson polarisation state and the ratio of the production cross sections for longitudinally and transversely polarised φ mesons is determined. A small but significant violation of s-channel helicity conservation (SCHC) is observed. (C) 2000 Elsevier Science B.V.

AB - The elastic electroproduction of φ mesons is studied at HERA with the H1 detector for photon virtualities 1 < Q2 < 15 GeV2 and hadronic centre of mass energies 40 < W < 130 GeV. The Q2 and t dependences of the cross section are extracted (t being the square of the four-momentum transfer to the target proton). When plotted as function of (Q2 + M(v)/2) and scaled by the appropriate SU(5) quark charge factor, the φ meson cross section agrees within errors with the cross sections of the vector mesons V = p, ω and J/ψ. A detailed analysis is performed of the φ meson polarisation state and the ratio of the production cross sections for longitudinally and transversely polarised φ mesons is determined. A small but significant violation of s-channel helicity conservation (SCHC) is observed. (C) 2000 Elsevier Science B.V.

UR - https://www.scopus.com/pages/publications/0034702159

U2 - 10.1016/S0370-2693(00)00613-4

DO - 10.1016/S0370-2693(00)00613-4

M3 - Article

AN - SCOPUS:0034702159

SN - 0370-2693

VL - 483

SP - 360

EP - 372

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 4

ER -

Measurement of elastic electroproduction of φ mesons at HERA

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