Spin asymmetries for events with high [Formula Presented] hadrons in DIS and an evaluation of the gluon polarization

B. Adeva; E. Arik; A. Arvidson; B. Badełek; G. Baum; P. Berglund; L. Betev; R. Birsa; N. 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. 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. Goff; F. Lehar; A. 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. Tłaczała; 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 [Formula Presented] hadrons in DIS and an evaluation of the gluon polarization

B. Adeva, E. Arik, A. Arvidson, B. Badełek, G. Baum, P. Berglund, L. Betev, R. Birsa, N. Botton, F. Bradamante, A. Bravar, A. Bressan, S. Bültmann, E. Burtin, D. Crabb, J. Cranshaw, T. Çuhadar, S. Dalla Torre, R. van Dantzig, B. DerroA. 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. 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. Goff, F. Lehar, A. 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. Tłaczała, 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

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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 [Formula Presented] and [Formula Presented] From these values we derive an averaged gluon polarization [Formula Presented] at an average fraction of nucleon momentum carried by gluons [Formula Presented].

Original language	English
Pages (from-to)	9
Number of pages	1
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 - 2004
MoE publication type	A1 Journal article-refereed

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10.1103/PhysRevD.70.012002

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Adeva, B., Arik, E., Arvidson, A., Badełek, B., Baum, G., Berglund, P., Betev, L., Birsa, R., 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 [Formula Presented] hadrons in DIS and an evaluation of the gluon polarization. Physical Review D - Particles, Fields, Gravitation and Cosmology, 70(1), 9. https://doi.org/10.1103/PhysRevD.70.012002

@article{60f5eb89151b476a8bb7f64e3b21a2ba,

title = "Spin asymmetries for events with high [Formula Presented] 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 [Formula Presented] and [Formula Presented] From these values we derive an averaged gluon polarization [Formula Presented] at an average fraction of nucleon momentum carried by gluons [Formula Presented].",

author = "B. Adeva and E. Arik and A. Arvidson and B. Bade{\l}ek and G. Baum and P. Berglund and L. Betev and R. Birsa and N. Botton 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 N. Groot 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 Goff, {J. M.} and F. Lehar and A. Lesquen 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. T{\l}acza{\l}a 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",

doi = "10.1103/PhysRevD.70.012002",

language = "English",

volume = "70",

pages = "9",

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

issn = "1550-7998",

publisher = "American Physical Society (APS)",

number = "1",

}

Adeva, B, Arik, E, Arvidson, A, Badełek, B, Baum, G, Berglund, P, Betev, L, Birsa, R, 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, 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, Goff, JM, Lehar, F, 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, Tłaczała, 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 [Formula Presented] hadrons in DIS and an evaluation of the gluon polarization', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 70, no. 1, pp. 9. https://doi.org/10.1103/PhysRevD.70.012002

TY - JOUR

T1 - Spin asymmetries for events with high [Formula Presented] hadrons in DIS and an evaluation of the gluon polarization

AU - Adeva, B.

AU - Arik, E.

AU - Arvidson, A.

AU - Badełek, B.

AU - Baum, G.

AU - Berglund, P.

AU - Betev, L.

AU - Birsa, R.

AU - 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 - 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 - Goff, J. M.

AU - Lehar, F.

AU - 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 - Tłaczała, 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

Y1 - 2004

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 [Formula Presented] and [Formula Presented] From these values we derive an averaged gluon polarization [Formula Presented] at an average fraction of nucleon momentum carried by gluons [Formula Presented].

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 [Formula Presented] and [Formula Presented] From these values we derive an averaged gluon polarization [Formula Presented] at an average fraction of nucleon momentum carried by gluons [Formula Presented].

UR - http://www.scopus.com/inward/record.url?scp=85039024955&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.70.012002

DO - 10.1103/PhysRevD.70.012002

M3 - Article

AN - SCOPUS:85039024955

SN - 1550-7998

VL - 70

SP - 9

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

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

IS - 1

ER -

Spin asymmetries for events with high [Formula Presented] hadrons in DIS and an evaluation of the gluon polarization

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