Direct Measurement of the Gluon Polarisation in the Nucleon via Charmed Meson Production

Alekseev M, Alexakhin VY, Alexandrov Y, Alexeev GD, Amoroso A, Arbuzov A, Badelek BM, Balestra F, Ball J, Barth J, Baum G, et al. (2008)
arXiv:0802.3023.

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Abstract
We present the first measurement of the gluon polarisation in the nucleon based on the photon-gluon fusion process tagged by charmed meson production and decay to charged K and pi. The data were collected in polarised muon scattering off a polarised deuteron target by the COMPASS collaboration at CERN during 2002-2004. The result of this LO analysis is _x = -0.47 +- 0.44 (stat) +- 0.15 (syst) at ~= 0.11 and a scale mu^2 ~ 13 (GeV/c)^2.
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Alekseev M, Alexakhin VY, Alexandrov Y, et al. Direct Measurement of the Gluon Polarisation in the Nucleon via Charmed Meson Production. arXiv:0802.3023. 2008.
Alekseev, M., Alexakhin, V. Y., Alexandrov, Y., Alexeev, G. D., Amoroso, A., Arbuzov, A., Badelek, B. M., et al. (2008). Direct Measurement of the Gluon Polarisation in the Nucleon via Charmed Meson Production. arXiv:0802.3023.
Alekseev, M., Alexakhin, V. Y., Alexandrov, Y., Alexeev, G. D., Amoroso, A., Arbuzov, A., Badelek, B. M., Balestra, F., Ball, J., Barth, J., et al. (2008). Direct Measurement of the Gluon Polarisation in the Nucleon via Charmed Meson Production. arXiv:0802.3023.
Alekseev, M., et al., 2008. Direct Measurement of the Gluon Polarisation in the Nucleon via Charmed Meson Production. arXiv:0802.3023.
M. Alekseev, et al., “Direct Measurement of the Gluon Polarisation in the Nucleon via Charmed Meson Production”, arXiv:0802.3023, 2008.
Alekseev, M., Alexakhin, V.Y., Alexandrov, Y., Alexeev, G.D., Amoroso, A., Arbuzov, A., Badelek, B.M., Balestra, F., Ball, J., Barth, J., Baum, G., Bedfer, Y., Bernet, C., Bertini, R., Bettinelli, M., Birsa, R., Bisplinghoff, J., Bordalo, P., Bradamante, F., Brona, G., Burtin, E., Bussa, M.P., Chapiro, A.,, Chiosso, M.,, Cicuttin, A.,, Colantoni, M.,, Crespo, M.L.,, Dalla Torre, S.,, Dafni, T.,, Das, S.,, Dasgupta, S.S.,, De Masi, R.,, Dedek, N.,, Dhara, L.,, Diaz, V.,, Dinkelbach, A.M.,, Donskov, S.V.,, Dorofeev, V.A.,, Doshita, N.,, Duic, V.,, Dunnweber, W.,, Eversheim, P.D.,, Eyrich, W.,, Faessler, M.,, Falaleev, V.,, Ferrero, L.,, Finger, M.,, Finger, M.,, Fischer, H.,, Franco, C.,, Franz, J.,, Friedrich, J.M.,, Garfagnini, R.,, Gautheron, F.,, Gavrichtchouk, O.P.,, Gazda, R.,, Geyer, R.,, Giorgi, M.,, Gobbo, B.,, Gorin, A.M.,, Grabmuller, S.,, Grajek, O.A.,, Grasso, A.,, Grube, B.,, Gushterski, R.,, Guskov, A.,, Haas, F.,, Hannappel, J.,, von Harrach, D.,, Hasegawa, T.,, Heckmann, J.,, Hedicke, S.,, Heinsius, F.-H.,, Hermann, R.,, Hess, C.,, Hinterberger, F.,, von Hodenberg, M.,, Horikawa, S.,, d'Hose, N.,, Ilgner, C.,, Ioukaev, A.I.,, Ishimoto, S.,, Ivanov, O.,, Ivanshin, Y.,, Jahn, R.,, Janata, A.,, Jasinski, P.,, Joosten, R.,, Jouravlev, N.I.,, Kabuss, E.,, Kang, D.,, Ketzer, B.,, Khaustov, G.V.,, Khokhlov, Y.A.,, Klein, F.,, Klimaszewski, K.,, Koblitz, S.,, Kolosov, V.N.,, Komissarov, E.V.,, Kondo, K.,, Konigsmann, K.,, Konstantinov, V.F.,, Korentchenko, A.S.,, Koutchinski, N.A.,, Kral, A.,, Kravchuk, N.P.,, Kroumchtein, Z.V.,, Kuhn, R.,, Kunne, F.,, Kurek, K.,, Ladygin, M.E.,, Le Goff, J.-M.,, Lednev, A.A.,, Lehmann, A.,, Levorato, S.,, Lichtenstadt, J.,, Liska, T.,, Ludwig, I.,, Maggiora, A.,, Maggiora, M.,, Magnon, A.,, Mallot, G.K.,, Mann, A.,, Marchand, C.,, Marroncle, J.,, Martin, A.,, Marzec, J.,, Massmann, F.,, Matsuda, T.,, Meyer, W.T.,, Mikhailov, Y.V.,, Moinester, M.A.,, Nagaytsev, A.,, Nagel, T.,, Nahle, O.,, Nassalski, J.,, Neliba, S.,, Nerling, F.,, Neubert, S.,, Neyret, D.P.,, Nikolaenko, V.I.,, Nikolaev, K.,, Olshevsky, A.G.,, Ostrick, M.,, Padee, A.,, Pagano, P.,, Panebianco, S.,, Panknin, R.,, Panzieri, D.,, Paul, S.,, Pawlukiewicz-Kaminska, B.,, Peshekhonov, D.V.,, Peshekhonov, V.D.,, Piragino, G.,, Platchkov, S.,, Pochodzalla, J.,, Polak, J.,, Polyakov, V.A.,, Pretz, J.,, Procureur, S.,, Quintans, C.,, Rajotte, J.F.,, Ramos, S.,, Rapatsky, V.,, Reicherz, G.,, Reggiani, D.,, Richter, A.,, Robinet, F.,, Rondio, E.,, Rozhdestvensky, A.M.,, Ryabchikov, D.I.,, Samoylenko, V.D.,, Sandacz, A.,, Sapozhnikov, M.G.,, Sarkar, S.,, Savin, I.A.,, Schiavon, P.,, Schill, C.,, Schonmeier, P.,, Schroder, W.,, Shevchenko, O.Y.,, Silva, L.,, Sinha, L.,, Sissakian, A.N.,, Slunecka, M.,, Smirnov, G.I.,, Sosio, S.,, Sozzi, F.,, Srnka, A.,, Stinzing, F.,, Sugonyaev, V.P.,, Sulc, M.,, Sulej, R.,, Tchalishev, V.V.,, Tessaro, S.,, Tessarotto, F.,, Teufel, A.,, Tkatchev, L.G.,, Venugopal, G.,, Virius, M.,, Vlassov, N.V.,, Vossen, A.,, Webb, R.C.,, Weitzel, Q.,, Windmolders, R.,, Wirth, S.,, Wislicki, W.,, Wollny, H.,, Zaremba, K.,, Zavertyaev, M.,, Zemlyanichkina, E.,, Ziegler, R.,, Zvyagin, A.,, Zvyagin, A.,: Direct Measurement of the Gluon Polarisation in the Nucleon via Charmed Meson Production. arXiv:0802.3023. (2008).
Alekseev, M., Alexakhin, V. Yu, Alexandrov, Yu, Alexeev, G. D, Amoroso, A., Arbuzov, A., Badelek, Barbara Maria, Balestra, F., Ball, J., Barth, J., Baum, Günter, Bedfer, Y., Bernet, Colin, Bertini, R., Bettinelli, M., Birsa, R., Bisplinghoff, J., Bordalo, P., Bradamante, Franco, Brona, G., Burtin, E., Bussa, M. P, Chapiro, A.,, Chiosso, M.,, Cicuttin, A.,, Colantoni, M.,, Crespo, M. L,, Dalla Torre, S.,, Dafni, T.,, Das, S.,, Dasgupta, S. S,, De Masi, R.,, Dedek, N.,, Dhara, L.,, Diaz, V.,, Dinkelbach, A. M,, Donskov, S. V,, Dorofeev, V. A,, Doshita, N.,, Duic, V.,, Dunnweber, W.,, Eversheim, P. D,, Eyrich, W.,, Faessler, M.,, Falaleev, V.,, Ferrero, L.,, Finger, M.,, Finger, M.,, Fischer, H.,, Franco, C.,, Franz, J.,, Friedrich, J. M,, Garfagnini, R.,, Gautheron, Fabrice,, Gavrichtchouk, O. P,, Gazda, R.,, Geyer, R.,, Giorgi, M.,, Gobbo, Benigno,, Gorin, A. M,, Grabmuller, S.,, Grajek, O. A,, Grasso, A.,, Grube, B.,, Gushterski, R.,, Guskov, A.,, Haas, F.,, Hannappel, J.,, von Harrach, D.,, Hasegawa, T.,, Heckmann, J.,, Hedicke, S.,, Heinsius, Fritz-Herbert,, Hermann, R.,, Hess, C.,, Hinterberger, F.,, von Hodenberg, M.,, Horikawa, S.,, d'Hose, N.,, Ilgner, C.,, Ioukaev, A. I,, Ishimoto, S.,, Ivanov, O.,, Ivanshin, Yu,, Jahn, R.,, Janata, A.,, Jasinski, P.,, Joosten, R.,, Jouravlev, N. I,, Kabuss, E.,, Kang, D.,, Ketzer, Bernhard,, Khaustov, G. V,, Khokhlov, Yu. A,, Klein, F.,, Klimaszewski, K.,, Koblitz, S.,, Kolosov, V. N,, Komissarov, E. V,, Kondo, K.,, Konigsmann, Kay,, Konstantinov, V. F,, Korentchenko, A. S,, Koutchinski, N. A,, Kral, A.,, Kravchuk, N. P,, Kroumchtein, Z. V,, Kuhn, R.,, Kunne, Fabienne,, Kurek, Krzysztof,, Ladygin, M. E,, Le Goff, Jean-Marc,, Lednev, A. A,, Lehmann, A.,, Levorato, S.,, Lichtenstadt, J.,, Liska, T.,, Ludwig, I.,, Maggiora, A.,, Maggiora, M.,, Magnon, A.,, Mallot, G. K,, Mann, A.,, Marchand, C.,, Marroncle, J.,, Martin, A.,, Marzec, J.,, Massmann, F.,, Matsuda, T.,, Meyer, W. Thomas,, Mikhailov, Yu. V,, Moinester, M. A,, Nagaytsev, A.,, Nagel, T.,, Nahle, O.,, Nassalski, J.,, Neliba, S.,, Nerling, F.,, Neubert, S.,, Neyret, D. P,, Nikolaenko, V. I,, Nikolaev, K.,, Olshevsky, A. G,, Ostrick, M.,, Padee, A.,, Pagano, P.,, Panebianco, S.,, Panknin, R.,, Panzieri, D.,, Paul, S.,, Pawlukiewicz-Kaminska, B.,, Peshekhonov, D. V,, Peshekhonov, V. D,, Piragino, G.,, Platchkov, Stephane,, Pochodzalla, J.,, Polak, J.,, Polyakov, V. A,, Pretz, J.,, Procureur, S.,, Quintans, C.,, Rajotte, J. F,, Ramos, S.,, Rapatsky, V.,, Reicherz, G.,, Reggiani, D.,, Richter, A.,, Robinet, F.,, Rondio, Ewa,, Rozhdestvensky, A. M,, Ryabchikov, D. I,, Samoylenko, V. D,, Sandacz, A.,, Sapozhnikov, M. G,, Sarkar, S.,, Savin, Igor A,, Schiavon, P.,, Schill, Christian,, Schonmeier, P.,, Schroder, W.,, Shevchenko, O. Yu,, Silva, L.,, Sinha, L.,, Sissakian, A. N,, Slunecka, M.,, Smirnov, G. I,, Sosio, S.,, Sozzi, F.,, Srnka, A.,, Stinzing, F.,, Sugonyaev, V. P,, Sulc, M.,, Sulej, R.,, Tchalishev, V. V,, Tessaro, S.,, Tessarotto, F.,, Teufel, A.,, Tkatchev, L. G,, Venugopal, G.,, Virius, M.,, Vlassov, N. V,, Vossen, A.,, Webb, Robert C,, Weitzel, Q.,, Windmolders, R.,, Wirth, S.,, Wislicki, W.,, Wollny, H.,, Zaremba, K.,, Zavertyaev, M.,, Zemlyanichkina, E.,, Ziegler, R.,, Zvyagin, A.,, and Zvyagin, A.,. “Direct Measurement of the Gluon Polarisation in the Nucleon via Charmed Meson Production”. arXiv:0802.3023 (2008).
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