Spin asymmetries for events with high pT hadrons in DIS and an evaluation of the gluon polarization

B. Adeva; E. Arik; A. Arvidson; B. Badelek; G. Baum; P. Berglund; L. Betev; R. Birsa; N. de Botton; F. Bradamante; A. Bravar; A. Bressan; S. Bültmann; E. Burtin; D. Crabb; J. Cranshaw; T. Çuhadar; S. Dalla Torre; R. van Dantzig; B. Derro; A. Deshpande; S. Dhawan; C. Dulya; S. Eichblatt; D. Fasching; F. Feinstein; C. Fernandez; B. Frois; A. Gallas; J. A. Garzon; H. Gilly; M. Giorgi; E. von Goeler; S. Goertz; G. Gracia; N. de Groot; M. Grosse Perdekamp; K. Haft; D. von Harrach; T. Hasegawa; P. Hautle; N. Hayashi; C. A. Heusch; N. Horikawa; V. W. Hughes; G. Igo; S. Ishimoto; T. Iwata; E. M. Kabuß; A. Karev; H. J. Kessler; T. J. Ketel; J. Kiryluk; Yu Kisselev; L. Klostermann; K. Kowalik; A. Kotzinian; W. Kröger; F. Kunne; K. Kurek; J. Kyynäräinen; M. Lamanna; U. Landgraf; J. M. Le Goff; F. Lehar; A. de Lesquen; J. Lichtenstadt; M. Litmaath; A. Magnon; G. K. Mallot; F. Marie; A. Martin; J. Martino; T. Matsuda; B. Mayes; J. S. McCarthy; K. Medved; W. Meyer; D. Miller; Y. Miyachi; K. Mori; J. Moromisato; J. Nassalski; T. O. Niinikoski; J. E.J. Oberski; A. Ogawa; C. Ozben; H. Pereira; D. Peshekhonov; R. Piegaia; L. Pinsky; S. Platchkov; M. Plo; D. Pose; H. Postma; J. Pretz; G. Rädel; G. Reicherz; J. Roberts; M. Rodriguez; E. Rondio; I. Sabo; J. Saborido; A. Sandacz; I. Savin; P. Schiavon; E. P. Sichtermann; F. Simeoni; G. I. Smirnov; A. Staude; A. Steinmetz; U. Stiegler; H. Stuhrmann; R. Sulej; F. Tessarotto; D. Thers; W. Tlaczala; A. Tripet; G. Unel; M. Velasco; J. Vogt; R. Voss; C. Whitten; R. Windmolders; R. Willumeit; W. Wiślicki; A. Witzmann; A. M. Zanetti; K. Zaremba; J. Zhao

doi:10.1103/PhysRevD.70.012002

Spin asymmetries for events with high p_T hadrons in DIS and an evaluation of the gluon polarization

B. Adeva^*
, E. Arik
, A. Arvidson
, B. Badelek
, G. Baum
, P. Berglund
, L. Betev
, R. Birsa
, N. de Botton
, F. Bradamante
, A. Bravar
, A. Bressan
, S. Bültmann
, E. Burtin
, D. Crabb
, J. Cranshaw
, T. Çuhadar
, S. Dalla Torre
, R. van Dantzig
, B. Derro

A. Deshpande, S. Dhawan, C. Dulya, S. Eichblatt, D. Fasching, F. Feinstein, C. Fernandez, B. Frois, A. Gallas, J. A. Garzon, H. Gilly, M. Giorgi, E. von Goeler, S. Goertz, G. Gracia, N. de Groot, M. Grosse Perdekamp, K. Haft, D. von Harrach, T. Hasegawa, P. Hautle, N. Hayashi, C. A. Heusch, N. Horikawa, V. W. Hughes, G. Igo, S. Ishimoto, T. Iwata, E. M. Kabuß, A. Karev, H. J. Kessler, T. J. Ketel, J. Kiryluk, Yu Kisselev, L. Klostermann, K. Kowalik, A. Kotzinian, W. Kröger, F. Kunne, K. Kurek, J. Kyynäräinen, M. Lamanna, U. Landgraf, J. M. Le Goff, F. Lehar, A. de Lesquen, J. Lichtenstadt, M. Litmaath, A. Magnon, G. K. Mallot, F. Marie, A. Martin, J. Martino, T. Matsuda, B. Mayes, J. S. McCarthy, K. Medved, W. Meyer, D. Miller, Y. Miyachi, K. Mori, J. Moromisato, J. Nassalski, T. O. Niinikoski, J. E.J. Oberski, A. Ogawa, C. Ozben, H. Pereira, D. Peshekhonov, R. Piegaia, L. Pinsky, S. Platchkov, M. Plo, D. Pose, H. Postma, J. Pretz, G. Rädel, G. Reicherz, J. Roberts, M. Rodriguez, E. Rondio, I. Sabo, J. Saborido, A. Sandacz, I. Savin, P. Schiavon, E. P. Sichtermann, F. Simeoni, G. I. Smirnov, A. Staude, A. Steinmetz, U. Stiegler, H. Stuhrmann, R. Sulej, F. Tessarotto, D. Thers, W. Tlaczala, A. Tripet, G. Unel, M. Velasco, J. Vogt, R. Voss, C. Whitten, R. Windmolders, R. Willumeit, W. Wiślicki, A. Witzmann, A. M. Zanetti, K. Zaremba, J. Zhao

^*Corresponding author for this work

Department of Particle Physics
University of Santiago de Compostela
Bogazici University
Department of Radiation Sciences
Uppsala University
The Royal Library
University of Warsaw
Physics Department
Bielefeld University
Low Temperature Laboratory
Aalto University
Physics Department
Ludwig Maximilian University of Munich
Department of Physics
University of California at Los Angeles
University of Trieste
CEA Saclay
Institute for Nuclear Physics
Johannes Gutenberg University Mainz
Brookhaven National Laboratory
Old Dominion University
University of Virginia
Rice University
Texas Tech University
Delft University of Technology
Yale University
Physics and Astronomy Department
Stony Brook University
CIEMAT
Fermi National Accelerator Laboratory
Department of Physics
Northwestern University
University of Wisconsin
Department of Physics
University of Houston
Physics Department
University of Freiburg
Northeastern University
Physics Department
Ruhr University Bochum
National Institute for Subatomic Physics
University of Bristol
University of Illinois at Urbana-Champaign
CIRSE and Department of Physics
Nagoya University
Faculty of Engineering
University of Miyazaki
CERN
Paul Scherrer Institute
RIKEN
University of California at Santa Cruz
High Energy Accelerator Research Organization, Tsukuba
Joint Institute for Nuclear Research
SBC Warburg Dillon Read Corporate Finance AG
School of Physics
Tel Aviv University
Nantes Université
Physics Department
Universidad de Buenos Aires
University of Bonn
Lawrence Berkeley National Laboratory
Helmholtz-Zentrum Hereon
Warsaw University of Technology
Faculty of Science
Universite de Mons
F. Hoffmann-La Roche AG
Oak Ridge National Laboratory

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

152 Citations (SciVal)

Abstract

We present a measurement of the longitudinal spin cross section asymmetry for deep-inelastic muon-nucleon interactions with two high transverse momentum hadrons in the final state. Two methods of event classification are used to increase the contribution of the photon-gluon fusion process to above 30%. The most effective one, based on a neural network approach, provides the asymmetries A_p^{ℓN→ℓhhX}=0.030±0.057(stat)±0. 010(syst) and A_d^{ℓN→ℓhhX}=0.070±0. 076(stat)±0.010(syst). From these values we derive an averaged gluon polarization ΔG/G=-0.20±0.28(stat)±0.10(syst) at an average fraction of nucleon momentum carried by gluons 〈η〉 = 0.07.

Original language	English
Article number	012002
Pages (from-to)	012002-1-012002-9
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	70
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevD.70.012002
Publication status	Published - Jul 2004
Externally published	Yes

Access to Document

10.1103/PhysRevD.70.012002

Cite this

Adeva, B., Arik, E., Arvidson, A., Badelek, B., Baum, G., Berglund, P., Betev, L., Birsa, R., de Botton, N., Bradamante, F., Bravar, A., Bressan, A., Bültmann, S., Burtin, E., Crabb, D., Cranshaw, J., Çuhadar, T., Dalla Torre, S., van Dantzig, R., ... Zhao, J. (2004). Spin asymmetries for events with high p_T hadrons in DIS and an evaluation of the gluon polarization. Physical Review D - Particles, Fields, Gravitation and Cosmology, 70(1), 012002-1-012002-9. Article 012002. https://doi.org/10.1103/PhysRevD.70.012002

@article{f55cc8f581414cfd925c4dfd28456ecb,

title = "Spin asymmetries for events with high pT hadrons in DIS and an evaluation of the gluon polarization",

abstract = "We present a measurement of the longitudinal spin cross section asymmetry for deep-inelastic muon-nucleon interactions with two high transverse momentum hadrons in the final state. Two methods of event classification are used to increase the contribution of the photon-gluon fusion process to above 30\%. The most effective one, based on a neural network approach, provides the asymmetries ApℓN→ℓhhX=0.030±0.057(stat)±0. 010(syst) and AdℓN→ℓhhX=0.070±0. 076(stat)±0.010(syst). From these values we derive an averaged gluon polarization ΔG/G=-0.20±0.28(stat)±0.10(syst) at an average fraction of nucleon momentum carried by gluons 〈η〉 = 0.07.",

author = "B. Adeva and E. Arik and A. Arvidson and B. Badelek and G. Baum and P. Berglund and L. Betev and R. Birsa and \{de Botton\}, N. and F. Bradamante and A. Bravar and A. Bressan and S. B{\"u}ltmann and E. Burtin and D. Crabb and J. Cranshaw and T. {\c C}uhadar and \{Dalla Torre\}, S. and \{van Dantzig\}, R. and B. Derro and A. Deshpande and S. Dhawan and C. Dulya and S. Eichblatt and D. Fasching and F. Feinstein and C. Fernandez and B. Frois and A. Gallas and Garzon, \{J. A.\} and H. Gilly and M. Giorgi and \{von Goeler\}, E. and S. Goertz and G. Gracia and \{de Groot\}, N. and \{Grosse Perdekamp\}, M. and K. Haft and \{von Harrach\}, D. and T. Hasegawa and P. Hautle and N. Hayashi and Heusch, \{C. A.\} and N. Horikawa and Hughes, \{V. W.\} and G. Igo and S. Ishimoto and T. Iwata and Kabu{\ss}, \{E. M.\} and A. Karev and Kessler, \{H. J.\} and Ketel, \{T. J.\} and J. Kiryluk and Yu Kisselev and L. Klostermann and K. Kowalik and A. Kotzinian and W. Kr{\"o}ger and F. Kunne and K. Kurek and J. Kyyn{\"a}r{\"a}inen and M. Lamanna and U. Landgraf and \{Le Goff\}, \{J. M.\} and F. Lehar and \{de Lesquen\}, A. and J. Lichtenstadt and M. Litmaath and A. Magnon and Mallot, \{G. K.\} and F. Marie and A. Martin and J. Martino and T. Matsuda and B. Mayes and McCarthy, \{J. S.\} and K. Medved and W. Meyer and D. Miller and Y. Miyachi and K. Mori and J. Moromisato and J. Nassalski and Niinikoski, \{T. O.\} and Oberski, \{J. E.J.\} and A. Ogawa and C. Ozben and H. Pereira and D. Peshekhonov and R. Piegaia and L. Pinsky and S. Platchkov and M. Plo and D. Pose and H. Postma and J. Pretz and G. R{\"a}del and G. Reicherz and J. Roberts and M. Rodriguez and E. Rondio and I. Sabo and J. Saborido and A. Sandacz and I. Savin and P. Schiavon and Sichtermann, \{E. P.\} and F. Simeoni and Smirnov, \{G. I.\} and A. Staude and A. Steinmetz and U. Stiegler and H. Stuhrmann and R. Sulej and F. Tessarotto and D. Thers and W. Tlaczala and A. Tripet and G. Unel and M. Velasco and J. Vogt and R. Voss and C. Whitten and R. Windmolders and R. Willumeit and W. Wi{\'s}licki and A. Witzmann and Zanetti, \{A. M.\} and K. Zaremba and J. Zhao",

year = "2004",

month = jul,

doi = "10.1103/PhysRevD.70.012002",

language = "English",

volume = "70",

pages = "012002--1--012002--9",

journal = "Physical Review D - Particles, Fields, Gravitation and Cosmology",

issn = "0556-2821",

number = "1",

}

Adeva, B, Arik, E, Arvidson, A, Badelek, B, Baum, G, Berglund, P, Betev, L, Birsa, R, de Botton, N, Bradamante, F, Bravar, A, Bressan, A, Bültmann, S, Burtin, E, Crabb, D, Cranshaw, J, Çuhadar, T, Dalla Torre, S, van Dantzig, R, Derro, B, Deshpande, A, Dhawan, S, Dulya, C, Eichblatt, S, Fasching, D, Feinstein, F, Fernandez, C, Frois, B, Gallas, A, Garzon, JA, Gilly, H, Giorgi, M, von Goeler, E, Goertz, S, Gracia, G, de Groot, N, Grosse Perdekamp, M, Haft, K, von Harrach, D, Hasegawa, T, Hautle, P, Hayashi, N, Heusch, CA, Horikawa, N, Hughes, VW, Igo, G, Ishimoto, S, Iwata, T, Kabuß, EM, Karev, A, Kessler, HJ, Ketel, TJ, Kiryluk, J, Kisselev, Y, Klostermann, L, Kowalik, K, Kotzinian, A, Kröger, W, Kunne, F, Kurek, K, Kyynäräinen, J, Lamanna, M, Landgraf, U, Le Goff, JM, Lehar, F, de Lesquen, A, Lichtenstadt, J, Litmaath, M, Magnon, A, Mallot, GK, Marie, F, Martin, A, Martino, J, Matsuda, T, Mayes, B, McCarthy, JS, Medved, K, Meyer, W, Miller, D, Miyachi, Y, Mori, K, Moromisato, J, Nassalski, J, Niinikoski, TO, Oberski, JEJ, Ogawa, A, Ozben, C, Pereira, H, Peshekhonov, D, Piegaia, R, Pinsky, L, Platchkov, S, Plo, M, Pose, D, Postma, H, Pretz, J, Rädel, G, Reicherz, G, Roberts, J, Rodriguez, M, Rondio, E, Sabo, I, Saborido, J, Sandacz, A, Savin, I, Schiavon, P, Sichtermann, EP, Simeoni, F, Smirnov, GI, Staude, A, Steinmetz, A, Stiegler, U, Stuhrmann, H, Sulej, R, Tessarotto, F, Thers, D, Tlaczala, W, Tripet, A, Unel, G, Velasco, M, Vogt, J, Voss, R, Whitten, C, Windmolders, R, Willumeit, R, Wiślicki, W, Witzmann, A, Zanetti, AM, Zaremba, K & Zhao, J 2004, 'Spin asymmetries for events with high p_T hadrons in DIS and an evaluation of the gluon polarization', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 70, no. 1, 012002, pp. 012002-1-012002-9. https://doi.org/10.1103/PhysRevD.70.012002

TY - JOUR

T1 - Spin asymmetries for events with high pT hadrons in DIS and an evaluation of the gluon polarization

AU - Adeva, B.

AU - Arik, E.

AU - Arvidson, A.

AU - Badelek, B.

AU - Baum, G.

AU - Berglund, P.

AU - Betev, L.

AU - Birsa, R.

AU - de Botton, N.

AU - Bradamante, F.

AU - Bravar, A.

AU - Bressan, A.

AU - Bültmann, S.

AU - Burtin, E.

AU - Crabb, D.

AU - Cranshaw, J.

AU - Çuhadar, T.

AU - Dalla Torre, S.

AU - van Dantzig, R.

AU - Derro, B.

AU - Deshpande, A.

AU - Dhawan, S.

AU - Dulya, C.

AU - Eichblatt, S.

AU - Fasching, D.

AU - Feinstein, F.

AU - Fernandez, C.

AU - Frois, B.

AU - Gallas, A.

AU - Garzon, J. A.

AU - Gilly, H.

AU - Giorgi, M.

AU - von Goeler, E.

AU - Goertz, S.

AU - Gracia, G.

AU - de Groot, N.

AU - Grosse Perdekamp, M.

AU - Haft, K.

AU - von Harrach, D.

AU - Hasegawa, T.

AU - Hautle, P.

AU - Hayashi, N.

AU - Heusch, C. A.

AU - Horikawa, N.

AU - Hughes, V. W.

AU - Igo, G.

AU - Ishimoto, S.

AU - Iwata, T.

AU - Kabuß, E. M.

AU - Karev, A.

AU - Kessler, H. J.

AU - Ketel, T. J.

AU - Kiryluk, J.

AU - Kisselev, Yu

AU - Klostermann, L.

AU - Kowalik, K.

AU - Kotzinian, A.

AU - Kröger, W.

AU - Kunne, F.

AU - Kurek, K.

AU - Kyynäräinen, J.

AU - Lamanna, M.

AU - Landgraf, U.

AU - Le Goff, J. M.

AU - Lehar, F.

AU - de Lesquen, A.

AU - Lichtenstadt, J.

AU - Litmaath, M.

AU - Magnon, A.

AU - Mallot, G. K.

AU - Marie, F.

AU - Martin, A.

AU - Martino, J.

AU - Matsuda, T.

AU - Mayes, B.

AU - McCarthy, J. S.

AU - Medved, K.

AU - Meyer, W.

AU - Miller, D.

AU - Miyachi, Y.

AU - Mori, K.

AU - Moromisato, J.

AU - Nassalski, J.

AU - Niinikoski, T. O.

AU - Oberski, J. E.J.

AU - Ogawa, A.

AU - Ozben, C.

AU - Pereira, H.

AU - Peshekhonov, D.

AU - Piegaia, R.

AU - Pinsky, L.

AU - Platchkov, S.

AU - Plo, M.

AU - Pose, D.

AU - Postma, H.

AU - Pretz, J.

AU - Rädel, G.

AU - Reicherz, G.

AU - Roberts, J.

AU - Rodriguez, M.

AU - Rondio, E.

AU - Sabo, I.

AU - Saborido, J.

AU - Sandacz, A.

AU - Savin, I.

AU - Schiavon, P.

AU - Sichtermann, E. P.

AU - Simeoni, F.

AU - Smirnov, G. I.

AU - Staude, A.

AU - Steinmetz, A.

AU - Stiegler, U.

AU - Stuhrmann, H.

AU - Sulej, R.

AU - Tessarotto, F.

AU - Thers, D.

AU - Tlaczala, W.

AU - Tripet, A.

AU - Unel, G.

AU - Velasco, M.

AU - Vogt, J.

AU - Voss, R.

AU - Whitten, C.

AU - Windmolders, R.

AU - Willumeit, R.

AU - Wiślicki, W.

AU - Witzmann, A.

AU - Zanetti, A. M.

AU - Zaremba, K.

AU - Zhao, J.

PY - 2004/7

Y1 - 2004/7

N2 - We present a measurement of the longitudinal spin cross section asymmetry for deep-inelastic muon-nucleon interactions with two high transverse momentum hadrons in the final state. Two methods of event classification are used to increase the contribution of the photon-gluon fusion process to above 30%. The most effective one, based on a neural network approach, provides the asymmetries ApℓN→ℓhhX=0.030±0.057(stat)±0. 010(syst) and AdℓN→ℓhhX=0.070±0. 076(stat)±0.010(syst). From these values we derive an averaged gluon polarization ΔG/G=-0.20±0.28(stat)±0.10(syst) at an average fraction of nucleon momentum carried by gluons 〈η〉 = 0.07.

AB - We present a measurement of the longitudinal spin cross section asymmetry for deep-inelastic muon-nucleon interactions with two high transverse momentum hadrons in the final state. Two methods of event classification are used to increase the contribution of the photon-gluon fusion process to above 30%. The most effective one, based on a neural network approach, provides the asymmetries ApℓN→ℓhhX=0.030±0.057(stat)±0. 010(syst) and AdℓN→ℓhhX=0.070±0. 076(stat)±0.010(syst). From these values we derive an averaged gluon polarization ΔG/G=-0.20±0.28(stat)±0.10(syst) at an average fraction of nucleon momentum carried by gluons 〈η〉 = 0.07.

UR - https://www.scopus.com/pages/publications/37649027661

U2 - 10.1103/PhysRevD.70.012002

DO - 10.1103/PhysRevD.70.012002

M3 - Article

AN - SCOPUS:37649027661

SN - 0556-2821

VL - 70

SP - 012002-1-012002-9

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

IS - 1

M1 - 012002

ER -

Spin asymmetries for events with high p_T hadrons in DIS and an evaluation of the gluon polarization

Abstract

Access to Document

Other files and links

Fingerprint

Cite this