The deuteron spin-dependent structure function g1d and its first moment

V. Yu Alexakhin; Yu Alexandrov; G. D. Alexeev; M. Alexeev; A. Amoroso; B. Badełek; F. Balestra; J. Ball; J. Barth; G. Baum; M. Becker; Y. Bedfer; C. Bernet; R. Bertini; M. Bettinelli; R. Birsa; J. Bisplinghoff; P. Bordalo; F. Bradamante; A. Bressan; G. Brona; E. Burtin; M. P. Bussa; V. N. Bytchkov; A. Chapiro; A. Cicuttin; M. Colantoni; A. A. Colavita; S. Costa; M. L. Crespo; N. d'Hose; S. Dalla Torre; S. Das; S. S. Dasgupta; R. De Masi; N. Dedek; D. Demchenko; O. Yu Denisov; L. Dhara; V. Diaz; A. M. Dinkelbach; S. V. Donskov; V. A. Dorofeev; N. Doshita; V. Duic; W. Dünnweber; A. Efremov; P. D. Eversheim; W. Eyrich; M. Faessler; P. Fauland; A. Ferrero; L. Ferrero; M. Finger; M. Finger; H. Fischer; J. Franz; J. M. Friedrich; V. Frolov; R. Garfagnini; F. Gautheron; O. P. Gavrichtchouk; S. Gerassimov; R. Geyer; M. Giorgi; B. Gobbo; S. Goertz; A. M. Gorin; O. A. Grajek; A. Grasso; B. Grube; A. Guskov; F. Haas; J. Hannappel; D. von Harrach; T. Hasegawa; S. Hedicke; F. H. Heinsius; R. Hermann; C. Heß; F. Hinterberger; M. von Hodenberg; N. Horikawa; S. Horikawa; I. Horn; C. Ilgner; A. I. Ioukaev; I. Ivanchin; O. Ivanov; T. Iwata; R. Jahn; A. Janata; R. Joosten; N. I. Jouravlev; E. Kabuß; D. Kang; B. Ketzer; G. V. Khaustov; Yu A. Khokhlov; Yu Kisselev; F. Klein; K. Klimaszewski; S. Koblitz; J. H. Koivuniemi; V. N. Kolosov; E. V. Komissarov; K. Kondo; K. Königsmann; I. Konorov; V. F. Konstantinov; A. S. Korentchenko; A. Korzenev; A. M. Kotzinian; N. A. Koutchinski; O. Kouznetsov; K. Kowalik; D. Kramer; N. P. Kravchuk; G. V. Krivokhizhin; Z. V. Kroumchtein; J. Kubart; R. Kuhn; V. Kukhtin; F. Kunne; K. Kurek; M. E. Ladygin; M. Lamanna; J. M. Le Goff; M. Leberig; A. A. Lednev; A. Lehmann; J. Lichtenstadt; T. Liska; I. Ludwig; A. Maggiora; M. Maggiora; A. Magnon; G. K. Mallot; C. Marchand; J. Marroncle; A. Martin; J. Marzec; L. Masek; F. Massmann; T. Matsuda; D. Matthiä; A. N. Maximov; W. Meyer; A. Mielech; Yu V. Mikhailov; M. A. Moinester; T. Nagel; O. Nähle; J. Nassalski; S. Neliba; D. P. Neyret; V. I. Nikolaenko; K. Nikolaev; A. A. Nozdrin; V. F. Obraztsov; A. G. Olshevsky; M. Ostrick; A. Padee; P. Pagano; S. Panebianco; D. Panzieri; S. Paul; D. V. Peshekhonov; V. D. Peshekhonov; G. Piragino; S. Platchkov; J. Pochodzalla; J. Polak; V. A. Polyakov; G. Pontecorvo; A. A. Popov; J. Pretz; S. Procureur; C. Quintans; S. Ramos; G. Reicherz; E. Rondio; A. M. Rozhdestvensky; D. Ryabchikov; V. D. Samoylenko; A. Sandacz; H. Santos; M. G. Sapozhnikov; I. A. Savin; P. Schiavon; C. Schill; L. Schmitt; W. Schroeder; D. Seeharsch; M. Seimetz; D. Setter; O. Yu Shevchenko; H. W. Siebert; L. Silva; L. Sinha; A. N. Sissakian; M. Slunecka; G. I. Smirnov; F. Sozzi; A. Srnka; F. Stinzing; M. Stolarski; V. P. Sugonyaev; M. Sulc; R. Sulej; V. V. Tchalishev; S. Tessaro; F. Tessarotto; A. Teufel; L. G. Tkatchev; S. Trippel; G. Venugopal; M. Virius; N. V. Vlassov; R. Webb; E. Weise; Q. Weitzel; R. Windmolders; W. Wiślicki; K. Zaremba; M. Zavertyaev; E. Zemlyanichkina; J. Zhao; R. Ziegler; A. Zvyagin

doi:10.1016/j.physletb.2006.12.076

The deuteron spin-dependent structure function g₁^d and its first moment

V. Yu Alexakhin, Yu Alexandrov, G. D. Alexeev, M. Alexeev, A. Amoroso, B. Badełek, F. Balestra, J. Ball, J. Barth, G. Baum, M. Becker, Y. Bedfer, C. Bernet, R. Bertini, M. Bettinelli, R. Birsa, J. Bisplinghoff, P. Bordalo, F. Bradamante, A. BressanG. Brona, E. Burtin, M. P. Bussa, V. N. Bytchkov, A. Chapiro, A. Cicuttin, M. Colantoni, A. A. Colavita, S. Costa, M. L. Crespo, N. d'Hose, S. Dalla Torre, S. Das, S. S. Dasgupta, R. De Masi, N. Dedek, D. Demchenko, O. Yu Denisov, L. Dhara, V. Diaz, A. M. Dinkelbach, S. V. Donskov, V. A. Dorofeev, N. Doshita, V. Duic, W. Dünnweber, A. Efremov, P. D. Eversheim, W. Eyrich, M. Faessler, P. Fauland, A. Ferrero, L. Ferrero, M. Finger, M. Finger, H. Fischer, J. Franz, J. M. Friedrich, V. Frolov, R. Garfagnini, F. Gautheron, O. P. Gavrichtchouk, S. Gerassimov, R. Geyer, M. Giorgi, B. Gobbo, S. Goertz, A. M. Gorin, O. A. Grajek, A. Grasso, B. Grube, A. Guskov, F. Haas, J. Hannappel, D. von Harrach, T. Hasegawa, S. Hedicke, F. H. Heinsius, R. Hermann, C. Heß, F. Hinterberger, M. von Hodenberg, N. Horikawa, S. Horikawa, I. Horn, C. Ilgner, A. I. Ioukaev, I. Ivanchin, O. Ivanov, T. Iwata, R. Jahn, A. Janata, R. Joosten, N. I. Jouravlev, E. Kabuß, D. Kang, B. Ketzer, G. V. Khaustov, Yu A. Khokhlov, Yu Kisselev, F. Klein, K. Klimaszewski, S. Koblitz, J. H. Koivuniemi, V. N. Kolosov, E. V. Komissarov, K. Kondo, K. Königsmann, I. Konorov, V. F. Konstantinov, A. S. Korentchenko, A. Korzenev, A. M. Kotzinian, N. A. Koutchinski, O. Kouznetsov, K. Kowalik, D. Kramer, N. P. Kravchuk, G. V. Krivokhizhin, Z. V. Kroumchtein, J. Kubart, R. Kuhn, V. Kukhtin, F. Kunne, K. Kurek, M. E. Ladygin, M. Lamanna, J. M. Le Goff, M. Leberig, A. A. Lednev, A. Lehmann, J. Lichtenstadt, T. Liska, I. Ludwig, A. Maggiora, M. Maggiora, A. Magnon, G. K. Mallot^*, C. Marchand, J. Marroncle, A. Martin, J. Marzec, L. Masek, F. Massmann, T. Matsuda, D. Matthiä, A. N. Maximov, W. Meyer, A. Mielech, Yu V. Mikhailov, M. A. Moinester, T. Nagel, O. Nähle, J. Nassalski, S. Neliba, D. P. Neyret, V. I. Nikolaenko, K. Nikolaev, A. A. Nozdrin, V. F. Obraztsov, A. G. Olshevsky, M. Ostrick, A. Padee, P. Pagano, S. Panebianco, D. Panzieri, S. Paul, D. V. Peshekhonov, V. D. Peshekhonov, G. Piragino, S. Platchkov, J. Pochodzalla, J. Polak, V. A. Polyakov, G. Pontecorvo, A. A. Popov, J. Pretz, S. Procureur, C. Quintans, S. Ramos, G. Reicherz, E. Rondio, A. M. Rozhdestvensky, D. Ryabchikov, V. D. Samoylenko, A. Sandacz, H. Santos, M. G. Sapozhnikov, I. A. Savin, P. Schiavon, C. Schill, L. Schmitt, W. Schroeder, D. Seeharsch, M. Seimetz, D. Setter, O. Yu Shevchenko, H. W. Siebert, L. Silva, L. Sinha, A. N. Sissakian, M. Slunecka, G. I. Smirnov, F. Sozzi, A. Srnka, F. Stinzing, M. Stolarski, V. P. Sugonyaev, M. Sulc, R. Sulej, V. V. Tchalishev, S. Tessaro, F. Tessarotto, A. Teufel, L. G. Tkatchev, S. Trippel, G. Venugopal, M. Virius, N. V. Vlassov, R. Webb, E. Weise, Q. Weitzel, R. Windmolders, W. Wiślicki, K. Zaremba, M. Zavertyaev, E. Zemlyanichkina, J. Zhao, R. Ziegler, A. Zvyagin

^*Corresponding author for this work

School of Physics and Astronomy

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

Abstract

We present a measurement of the deuteron spin-dependent structure function g₁^d based on the data collected by the COMPASS experiment at CERN during the years 2002-2004. The data provide an accurate evaluation for Γ₁^d, the first moment of g₁^d (x), and for the matrix element of the singlet axial current, a₀. The results of QCD fits in the next to leading order (NLO) on all g₁ deep inelastic scattering data are also presented. They provide two solutions with the gluon spin distribution function ΔG positive or negative, which describe the data equally well. In both cases, at Q² = 3 (GeV / c)² the first moment of Δ G (x) is found to be of the order of 0.2-0.3 in absolute value.

Original language	English
Pages (from-to)	8-17
Number of pages	10
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	647
Issue number	1
DOIs	https://doi.org/10.1016/j.physletb.2006.12.076
State	Published - 29 Mar 2007

Keywords

A
Deep inelastic scattering
QCD analysis
Spin
Structure function
g

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10.1016/j.physletb.2006.12.076

Cite this

Alexakhin, V. Y., Alexandrov, Y., Alexeev, G. D., Alexeev, M., Amoroso, A., Badełek, B., Balestra, F., Ball, J., Barth, J., Baum, G., Becker, M., Bedfer, Y., Bernet, C., Bertini, R., Bettinelli, M., Birsa, R., Bisplinghoff, J., Bordalo, P., Bradamante, F., ... Zvyagin, A. (2007). The deuteron spin-dependent structure function g₁^d and its first moment. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 647(1), 8-17. https://doi.org/10.1016/j.physletb.2006.12.076

@article{8f8f4d6a34ea4a3d9861a378af2fcd92,

title = "The deuteron spin-dependent structure function g1d and its first moment",

abstract = "We present a measurement of the deuteron spin-dependent structure function g1d based on the data collected by the COMPASS experiment at CERN during the years 2002-2004. The data provide an accurate evaluation for Γ1d, the first moment of g1d (x), and for the matrix element of the singlet axial current, a0. The results of QCD fits in the next to leading order (NLO) on all g1 deep inelastic scattering data are also presented. They provide two solutions with the gluon spin distribution function ΔG positive or negative, which describe the data equally well. In both cases, at Q2 = 3 (GeV / c)2 the first moment of Δ G (x) is found to be of the order of 0.2-0.3 in absolute value.",

keywords = "A, Deep inelastic scattering, QCD analysis, Spin, Structure function, g",

author = "Alexakhin, {V. Yu} and Yu Alexandrov and Alexeev, {G. D.} and M. Alexeev and A. Amoroso and B. Bade{\l}ek and F. Balestra and J. Ball and J. Barth and G. Baum and M. Becker and Y. Bedfer and C. Bernet and R. Bertini and M. Bettinelli and R. Birsa and J. Bisplinghoff and P. Bordalo and F. Bradamante and A. Bressan and G. Brona and E. Burtin and Bussa, {M. P.} and Bytchkov, {V. N.} and A. Chapiro and A. Cicuttin and M. Colantoni and Colavita, {A. A.} and S. Costa and Crespo, {M. L.} and N. d'Hose and {Dalla Torre}, S. and S. Das and Dasgupta, {S. S.} and {De Masi}, R. and N. Dedek and D. Demchenko and Denisov, {O. Yu} and L. Dhara and V. Diaz and Dinkelbach, {A. M.} and Donskov, {S. V.} and Dorofeev, {V. A.} and N. Doshita and V. Duic and W. D{\"u}nnweber and A. Efremov and Eversheim, {P. D.} and W. Eyrich and M. Faessler and P. Fauland and A. Ferrero and L. Ferrero and M. Finger and M. Finger and H. Fischer and J. Franz and Friedrich, {J. M.} and V. Frolov and R. Garfagnini and F. Gautheron and Gavrichtchouk, {O. P.} and S. Gerassimov and R. Geyer and M. Giorgi and B. Gobbo and S. Goertz and Gorin, {A. M.} and Grajek, {O. A.} and A. Grasso and B. Grube and A. Guskov and F. Haas and J. Hannappel and {von Harrach}, D. and T. Hasegawa and S. Hedicke and Heinsius, {F. H.} and R. Hermann and C. He{\ss} and F. Hinterberger and {von Hodenberg}, M. and N. Horikawa and S. Horikawa and I. Horn and C. Ilgner and Ioukaev, {A. I.} and I. Ivanchin and O. Ivanov and T. Iwata and R. Jahn and A. Janata and R. Joosten and Jouravlev, {N. I.} and E. Kabu{\ss} and D. Kang and B. Ketzer and Khaustov, {G. V.} and Khokhlov, {Yu A.} and Yu Kisselev and F. Klein and K. Klimaszewski and S. Koblitz and Koivuniemi, {J. H.} and Kolosov, {V. N.} and Komissarov, {E. V.} and K. Kondo and K. K{\"o}nigsmann and I. Konorov and Konstantinov, {V. F.} and Korentchenko, {A. S.} and A. Korzenev and Kotzinian, {A. M.} and Koutchinski, {N. A.} and O. Kouznetsov and K. Kowalik and D. Kramer and Kravchuk, {N. P.} and Krivokhizhin, {G. V.} and Kroumchtein, {Z. V.} and J. Kubart and R. Kuhn and V. Kukhtin and F. Kunne and K. Kurek and Ladygin, {M. E.} and M. Lamanna and {Le Goff}, {J. M.} and M. Leberig and Lednev, {A. A.} and A. Lehmann and J. Lichtenstadt and T. Liska and I. Ludwig and A. Maggiora and M. Maggiora and A. Magnon and Mallot, {G. K.} and C. Marchand and J. Marroncle and A. Martin and J. Marzec and L. Masek and F. Massmann and T. Matsuda and D. Matthi{\"a} and Maximov, {A. N.} and W. Meyer and A. Mielech and Mikhailov, {Yu V.} and Moinester, {M. A.} and T. Nagel and O. N{\"a}hle and J. Nassalski and S. Neliba and Neyret, {D. P.} and Nikolaenko, {V. I.} and K. Nikolaev and Nozdrin, {A. A.} and Obraztsov, {V. F.} and Olshevsky, {A. G.} and M. Ostrick and A. Padee and P. Pagano and S. Panebianco and D. Panzieri and S. Paul and Peshekhonov, {D. V.} and Peshekhonov, {V. D.} and G. Piragino and S. Platchkov and J. Pochodzalla and J. Polak and Polyakov, {V. A.} and G. Pontecorvo and Popov, {A. A.} and J. Pretz and S. Procureur and C. Quintans and S. Ramos and G. Reicherz and E. Rondio and Rozhdestvensky, {A. M.} and D. Ryabchikov and Samoylenko, {V. D.} and A. Sandacz and H. Santos and Sapozhnikov, {M. G.} and Savin, {I. A.} and P. Schiavon and C. Schill and L. Schmitt and W. Schroeder and D. Seeharsch and M. Seimetz and D. Setter and Shevchenko, {O. Yu} and Siebert, {H. W.} and L. Silva and L. Sinha and Sissakian, {A. N.} and M. Slunecka and Smirnov, {G. I.} and F. Sozzi and A. Srnka and F. Stinzing and M. Stolarski and Sugonyaev, {V. P.} and M. Sulc and R. Sulej and Tchalishev, {V. V.} and S. Tessaro and F. Tessarotto and A. Teufel and Tkatchev, {L. G.} and S. Trippel and G. Venugopal and M. Virius and Vlassov, {N. V.} and R. Webb and E. Weise and Q. Weitzel and R. Windmolders and W. Wi{\'s}licki and K. Zaremba and M. Zavertyaev and E. Zemlyanichkina and J. Zhao and R. Ziegler and A. Zvyagin",

year = "2007",

month = mar,

day = "29",

doi = "10.1016/j.physletb.2006.12.076",

language = "אנגלית",

volume = "647",

pages = "8--17",

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

issn = "0370-2693",

publisher = "Elsevier",

number = "1",

}

Alexakhin, VY, Alexandrov, Y, Alexeev, GD, Alexeev, M, Amoroso, A, Badełek, B, Balestra, F, Ball, J, Barth, J, Baum, G, Becker, M, Bedfer, Y, Bernet, C, Bertini, R, Bettinelli, M, Birsa, R, Bisplinghoff, J, Bordalo, P, Bradamante, F, Bressan, A, Brona, G, Burtin, E, Bussa, MP, Bytchkov, VN, Chapiro, A, Cicuttin, A, Colantoni, M, Colavita, AA, Costa, S, Crespo, ML, d'Hose, N, Dalla Torre, S, Das, S, Dasgupta, SS, De Masi, R, Dedek, N, Demchenko, D, Denisov, OY, Dhara, L, Diaz, V, Dinkelbach, AM, Donskov, SV, Dorofeev, VA, Doshita, N, Duic, V, Dünnweber, W, Efremov, A, Eversheim, PD, Eyrich, W, Faessler, M, Fauland, P, Ferrero, A, Ferrero, L, Finger, M, Finger, M, Fischer, H, Franz, J, Friedrich, JM, Frolov, V, Garfagnini, R, Gautheron, F, Gavrichtchouk, OP, Gerassimov, S, Geyer, R, Giorgi, M, Gobbo, B, Goertz, S, Gorin, AM, Grajek, OA, Grasso, A, Grube, B, Guskov, A, Haas, F, Hannappel, J, von Harrach, D, Hasegawa, T, Hedicke, S, Heinsius, FH, Hermann, R, Heß, C, Hinterberger, F, von Hodenberg, M, Horikawa, N, Horikawa, S, Horn, I, Ilgner, C, Ioukaev, AI, Ivanchin, I, Ivanov, O, Iwata, T, Jahn, R, Janata, A, Joosten, R, Jouravlev, NI, Kabuß, E, Kang, D, Ketzer, B, Khaustov, GV, Khokhlov, YA, Kisselev, Y, Klein, F, Klimaszewski, K, Koblitz, S, Koivuniemi, JH, Kolosov, VN, Komissarov, EV, Kondo, K, Königsmann, K, Konorov, I, Konstantinov, VF, Korentchenko, AS, Korzenev, A, Kotzinian, AM, Koutchinski, NA, Kouznetsov, O, Kowalik, K, Kramer, D, Kravchuk, NP, Krivokhizhin, GV, Kroumchtein, ZV, Kubart, J, Kuhn, R, Kukhtin, V, Kunne, F, Kurek, K, Ladygin, ME, Lamanna, M, Le Goff, JM, Leberig, M, Lednev, AA, Lehmann, A, Lichtenstadt, J, Liska, T, Ludwig, I, Maggiora, A, Maggiora, M, Magnon, A, Mallot, GK, Marchand, C, Marroncle, J, Martin, A, Marzec, J, Masek, L, Massmann, F, Matsuda, T, Matthiä, D, Maximov, AN, Meyer, W, Mielech, A, Mikhailov, YV, Moinester, MA, Nagel, T, Nähle, O, Nassalski, J, Neliba, S, Neyret, DP, Nikolaenko, VI, Nikolaev, K, Nozdrin, AA, Obraztsov, VF, Olshevsky, AG, Ostrick, M, Padee, A, Pagano, P, Panebianco, S, Panzieri, D, Paul, S, Peshekhonov, DV, Peshekhonov, VD, Piragino, G, Platchkov, S, Pochodzalla, J, Polak, J, Polyakov, VA, Pontecorvo, G, Popov, AA, Pretz, J, Procureur, S, Quintans, C, Ramos, S, Reicherz, G, Rondio, E, Rozhdestvensky, AM, Ryabchikov, D, Samoylenko, VD, Sandacz, A, Santos, H, Sapozhnikov, MG, Savin, IA, Schiavon, P, Schill, C, Schmitt, L, Schroeder, W, Seeharsch, D, Seimetz, M, Setter, D, Shevchenko, OY, Siebert, HW, Silva, L, Sinha, L, Sissakian, AN, Slunecka, M, Smirnov, GI, Sozzi, F, Srnka, A, Stinzing, F, Stolarski, M, Sugonyaev, VP, Sulc, M, Sulej, R, Tchalishev, VV, Tessaro, S, Tessarotto, F, Teufel, A, Tkatchev, LG, Trippel, S, Venugopal, G, Virius, M, Vlassov, NV, Webb, R, Weise, E, Weitzel, Q, Windmolders, R, Wiślicki, W, Zaremba, K, Zavertyaev, M, Zemlyanichkina, E, Zhao, J, Ziegler, R & Zvyagin, A 2007, 'The deuteron spin-dependent structure function g₁^d and its first moment', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 647, no. 1, pp. 8-17. https://doi.org/10.1016/j.physletb.2006.12.076

TY - JOUR

T1 - The deuteron spin-dependent structure function g1d and its first moment

AU - Alexakhin, V. Yu

AU - Alexandrov, Yu

AU - Alexeev, G. D.

AU - Alexeev, M.

AU - Amoroso, A.

AU - Badełek, B.

AU - Balestra, F.

AU - Ball, J.

AU - Barth, J.

AU - Baum, G.

AU - Becker, M.

AU - Bedfer, Y.

AU - Bernet, C.

AU - Bertini, R.

AU - Bettinelli, M.

AU - Birsa, R.

AU - Bisplinghoff, J.

AU - Bordalo, P.

AU - Bradamante, F.

AU - Bressan, A.

AU - Brona, G.

AU - Burtin, E.

AU - Bussa, M. P.

AU - Bytchkov, V. N.

AU - Chapiro, A.

AU - Cicuttin, A.

AU - Colantoni, M.

AU - Colavita, A. A.

AU - Costa, S.

AU - Crespo, M. L.

AU - d'Hose, N.

AU - Dalla Torre, S.

AU - Das, S.

AU - Dasgupta, S. S.

AU - De Masi, R.

AU - Dedek, N.

AU - Demchenko, D.

AU - Denisov, O. Yu

AU - Dhara, L.

AU - Diaz, V.

AU - Dinkelbach, A. M.

AU - Donskov, S. V.

AU - Dorofeev, V. A.

AU - Doshita, N.

AU - Duic, V.

AU - Dünnweber, W.

AU - Efremov, A.

AU - Eversheim, P. D.

AU - Eyrich, W.

AU - Faessler, M.

AU - Fauland, P.

AU - Ferrero, A.

AU - Ferrero, L.

AU - Finger, M.

AU - Fischer, H.

AU - Franz, J.

AU - Friedrich, J. M.

AU - Frolov, V.

AU - Garfagnini, R.

AU - Gautheron, F.

AU - Gavrichtchouk, O. P.

AU - Gerassimov, S.

AU - Geyer, R.

AU - Giorgi, M.

AU - Gobbo, B.

AU - Goertz, S.

AU - Gorin, A. M.

AU - Grajek, O. A.

AU - Grasso, A.

AU - Grube, B.

AU - Guskov, A.

AU - Haas, F.

AU - Hannappel, J.

AU - von Harrach, D.

AU - Hasegawa, T.

AU - Hedicke, S.

AU - Heinsius, F. H.

AU - Hermann, R.

AU - Heß, C.

AU - Hinterberger, F.

AU - von Hodenberg, M.

AU - Horikawa, N.

AU - Horikawa, S.

AU - Horn, I.

AU - Ilgner, C.

AU - Ioukaev, A. I.

AU - Ivanchin, I.

AU - Ivanov, O.

AU - Iwata, T.

AU - Jahn, R.

AU - Janata, A.

AU - Joosten, R.

AU - Jouravlev, N. I.

AU - Kabuß, E.

AU - Kang, D.

AU - Ketzer, B.

AU - Khaustov, G. V.

AU - Khokhlov, Yu A.

AU - Kisselev, Yu

AU - Klein, F.

AU - Klimaszewski, K.

AU - Koblitz, S.

AU - Koivuniemi, J. H.

AU - Kolosov, V. N.

AU - Komissarov, E. V.

AU - Kondo, K.

AU - Königsmann, K.

AU - Konorov, I.

AU - Konstantinov, V. F.

AU - Korentchenko, A. S.

AU - Korzenev, A.

AU - Kotzinian, A. M.

AU - Koutchinski, N. A.

AU - Kouznetsov, O.

AU - Kowalik, K.

AU - Kramer, D.

AU - Kravchuk, N. P.

AU - Krivokhizhin, G. V.

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PY - 2007/3/29

Y1 - 2007/3/29

N2 - We present a measurement of the deuteron spin-dependent structure function g1d based on the data collected by the COMPASS experiment at CERN during the years 2002-2004. The data provide an accurate evaluation for Γ1d, the first moment of g1d (x), and for the matrix element of the singlet axial current, a0. The results of QCD fits in the next to leading order (NLO) on all g1 deep inelastic scattering data are also presented. They provide two solutions with the gluon spin distribution function ΔG positive or negative, which describe the data equally well. In both cases, at Q2 = 3 (GeV / c)2 the first moment of Δ G (x) is found to be of the order of 0.2-0.3 in absolute value.

AB - We present a measurement of the deuteron spin-dependent structure function g1d based on the data collected by the COMPASS experiment at CERN during the years 2002-2004. The data provide an accurate evaluation for Γ1d, the first moment of g1d (x), and for the matrix element of the singlet axial current, a0. The results of QCD fits in the next to leading order (NLO) on all g1 deep inelastic scattering data are also presented. They provide two solutions with the gluon spin distribution function ΔG positive or negative, which describe the data equally well. In both cases, at Q2 = 3 (GeV / c)2 the first moment of Δ G (x) is found to be of the order of 0.2-0.3 in absolute value.

KW - A

KW - Deep inelastic scattering

KW - QCD analysis

KW - Spin

KW - Structure function

KW - g

UR - http://www.scopus.com/inward/record.url?scp=33847776495&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2006.12.076

DO - 10.1016/j.physletb.2006.12.076

M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???

AN - SCOPUS:33847776495

SN - 0370-2693

VL - 647

SP - 8

EP - 17

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 - 1

ER -

The deuteron spin-dependent structure function g₁^d and its first moment

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