Measurement of the longitudinal spin transfer to Λ and barΛ hyperons in polarised muon DIS

M. Alekseev; V. Yu Alexakhin; Yu Alexandrov; G. D. Alexeev; A. Amoroso; A. Austregesilo; B. Badełek; F. Balestra; J. Ball; J. Barth; G. Baum; Y. Bedfer; J. Bernhard; R. Bertini; M. Bettinelli; R. Birsa; J. Bisplinghoff; P. Bordalo; F. Bradamante; A. Bravar; A. Bressan; G. Brona; E. Burtin; M. P. Bussa; A. Chapiro; M. Chiosso; S. U. Chung; A. Cicuttin; M. Colantoni; M. L. Crespo; S. Dalla Torre; T. Dafni; S. Das; S. S. Dasgupta; O. Yu Denisov; L. Dhara; V. Diaz; A. M. Dinkelbach; S. V. Donskov; N. Doshita; V. Duic; W. Dünnweber; A. Efremov; P. D. Eversheim; W. Eyrich; M. Faessler; A. Ferrero; M. Finger; M. Finger; H. Fischer; C. Franco; J. M. Friedrich; R. Garfagnini; F. Gautheron; O. P. Gavrichtchouk; R. Gazda; S. Gerassimov; R. Geyer; M. Giorgi; B. Gobbo; S. Goertz; S. Grabmüller; O. A. Grajek; A. Grasso; B. Grube; R. Gushterski; A. Guskov; F. Haas; D. Von Harrach; T. Hasegawa; J. Heckmann; F. H. Heinsius; M. Hermann; R. Hermann; F. Herrmann; C. He; F. Hinterberger; N. Horikawa; Ch Höppner; N. D'Hose; C. Ilgner; S. Ishimoto; O. Ivanov; Yu Ivanshin; B. Iven; T. Iwata; R. Jahn; P. Jasinski; G. Jegou; R. Joosten; E. Kabu; 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; R. Konopka; I. Konorov; V. F. Konstantinov; A. Korzenev; A. M. Kotzinian; O. Kouznetsov; K. Kowalik; M. Krämer; A. Kral; Z. V. Kroumchtein; R. Kuhn; F. Kunne; K. Kurek; J. M. Le Goff; A. A. Lednev; A. Lehmann; S. Levorato; J. Lichtenstadt; T. Liska; A. Maggiora; M. Maggiora; A. Magnon; G. K. Mallot; A. Mann; C. Marchand; J. Marroncle; A. Martin; J. Marzec; F. Massmann; T. Matsuda; A. N. Maximov; W. Meyer; T. Michigami; Yu V. Mikhailov; M. A. Moinester; A. Mutter; A. Nagaytsev; T. Nagel; J. Nassalski; S. Negrini; F. Nerling; S. Neubert; D. Neyret; V. I. Nikolaenko; A. G. Olshevsky; M. Ostrick; A. Padee; R. Panknin; D. Panzieri; B. Parsamyan; S. Paul; B. Pawlukiewicz-Kaminska; E. Perevalova; G. Pesaro; D. V. Peshekhonov; G. Piragino; S. Platchkov; J. Pochodzalla; J. Polak; V. A. Polyakov; G. Pontecorvo; J. Pretz; C. Quintans; J. F. Rajotte; S. Ramos; V. Rapatsky; G. Reicherz; D. Reggiani; A. Richter; F. Robinet; E. Rocco; E. Rondio; D. I. Ryabchikov; V. D. Samoylenko; A. Sandacz; H. Santos; M. G. Sapozhnikov; S. Sarkar; G. Sbrizzai; P. Schiavon; C. Schill; L. Schmitt; W. Schröder; O. Yu Shevchenko; H. W. Siebert; L. Silva; L. Sinha; A. N. Sissakian; M. Slunecka; G. I. Smirnov; S. Sosio; F. Sozzi; A. Srnka; M. Stolarski; M. Sulc; R. Sulej; S. Takekawa; S. Tessaro; F. Tessarotto; A. Teufel; L. G. Tkatchev; G. Venugopal; M. Virius; N. V. Vlassov; A. Vossen; Q. Weitzel; R. Windmolders; W. Wiślicki; H. Wollny; K. Zaremba; E. Zemlyanichkina; M. Ziembicki; J. Zhao; N. Zhuravlev; A. Zvyagin

doi:10.1140/epjc/s10052-009-1143-7

Measurement of the longitudinal spin transfer to Λ and barΛ hyperons in polarised muon DIS

M. Alekseev, V. Yu Alexakhin, Yu Alexandrov, G. D. Alexeev, A. Amoroso, A. Austregesilo, B. Badełek, F. Balestra, J. Ball, J. Barth, G. Baum, Y. Bedfer, J. Bernhard, R. Bertini, M. Bettinelli, R. Birsa, J. Bisplinghoff, P. Bordalo, F. Bradamante, A. BravarA. Bressan, G. Brona, E. Burtin, M. P. Bussa, A. Chapiro, M. Chiosso, S. U. Chung, A. Cicuttin, M. Colantoni, M. L. Crespo, S. Dalla Torre, T. Dafni, S. Das, S. S. Dasgupta, O. Yu Denisov, L. Dhara, V. Diaz, A. M. Dinkelbach, S. V. Donskov, N. Doshita, V. Duic, W. Dünnweber, A. Efremov, P. D. Eversheim, W. Eyrich, M. Faessler, A. Ferrero, M. Finger, M. Finger, H. Fischer, C. Franco, J. M. Friedrich, R. Garfagnini, F. Gautheron, O. P. Gavrichtchouk, R. Gazda, S. Gerassimov, R. Geyer, M. Giorgi, B. Gobbo, S. Goertz, S. Grabmüller, O. A. Grajek, A. Grasso, B. Grube, R. Gushterski, A. Guskov, F. Haas, D. Von Harrach, T. Hasegawa, J. Heckmann, F. H. Heinsius, M. Hermann, R. Hermann, F. Herrmann, C. He, F. Hinterberger, N. Horikawa, Ch Höppner, N. D'Hose, C. Ilgner, S. Ishimoto, O. Ivanov, Yu Ivanshin, B. Iven, T. Iwata, R. Jahn, P. Jasinski, G. Jegou, R. Joosten, E. Kabu, 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, R. Konopka, I. Konorov, V. F. Konstantinov, A. Korzenev, A. M. Kotzinian, O. Kouznetsov, K. Kowalik, M. Krämer, A. Kral, Z. V. Kroumchtein, R. Kuhn, F. Kunne, K. Kurek, J. M. Le Goff, A. A. Lednev, A. Lehmann, S. Levorato, J. Lichtenstadt, T. Liska, A. Maggiora, M. Maggiora, A. Magnon, G. K. Mallot, A. Mann, C. Marchand, J. Marroncle, A. Martin, J. Marzec, F. Massmann, T. Matsuda, A. N. Maximov, W. Meyer, T. Michigami, Yu V. Mikhailov, M. A. Moinester, A. Mutter, A. Nagaytsev, T. Nagel, J. Nassalski, S. Negrini, F. Nerling, S. Neubert, D. Neyret, V. I. Nikolaenko, A. G. Olshevsky, M. Ostrick, A. Padee, R. Panknin, D. Panzieri, B. Parsamyan, S. Paul, B. Pawlukiewicz-Kaminska, E. Perevalova, G. Pesaro, D. V. Peshekhonov, G. Piragino, S. Platchkov, J. Pochodzalla, J. Polak, V. A. Polyakov, G. Pontecorvo, J. Pretz, C. Quintans, J. F. Rajotte, S. Ramos, V. Rapatsky, G. Reicherz, D. Reggiani, A. Richter, F. Robinet, E. Rocco, E. Rondio, D. I. Ryabchikov, V. D. Samoylenko, A. Sandacz, H. Santos, M. G. Sapozhnikov, S. Sarkar, G. Sbrizzai, P. Schiavon, C. Schill, L. Schmitt, W. Schröder, O. Yu Shevchenko, H. W. Siebert, L. Silva, L. Sinha, A. N. Sissakian, M. Slunecka, G. I. Smirnov, S. Sosio, F. Sozzi, A. Srnka, M. Stolarski, M. Sulc, R. Sulej, S. Takekawa, S. Tessaro, F. Tessarotto, A. Teufel, L. G. Tkatchev, G. Venugopal, M. Virius, N. V. Vlassov, A. Vossen, Q. Weitzel, R. Windmolders, W. Wiślicki, H. Wollny, K. Zaremba, E. Zemlyanichkina, M. Ziembicki, J. Zhao, N. Zhuravlev, A. Zvyagin

Chair of Physics I

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

50 Scopus citations

Abstract

The longitudinal polarisation transfer from muons to Λ and \bar\Λ hyperons, D_LLΛ(barΛ),has been studied in deep-inelastic scattering off an unpolarised isoscalar target at the COMPASS experiment at CERN. The spin transfers to Λ and barΛ produced in the current fragmentation region exhibit different behaviours as a function of x and x _F. The measured x and x _F dependences of D _LL ^Λ are compatible with zero, while D _LLbarΛ tends to increase with x _F, reaching values of 0.4-0.5. The resulting average values are D _LL ^Λ = -0.012±0.047±0.024 and D_LLbarΛ = 0.249±0.056±0.049. These results are discussed in the frame of recent model calculations.

Original language	English
Article number	171
Pages (from-to)	171-179
Number of pages	9
Journal	European Physical Journal C
Volume	64
Issue number	2
DOIs	https://doi.org/10.1140/epjc/s10052-009-1143-7
State	Published - Nov 2009

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10.1140/epjc/s10052-009-1143-7

Cite this

Alekseev, M., Alexakhin, V. Y., Alexandrov, Y., Alexeev, G. D., Amoroso, A., Austregesilo, A., Badełek, B., Balestra, F., Ball, J., Barth, J., Baum, G., Bedfer, Y., Bernhard, J., Bertini, R., Bettinelli, M., Birsa, R., Bisplinghoff, J., Bordalo, P., Bradamante, F., ... Zvyagin, A. (2009). Measurement of the longitudinal spin transfer to Λ and barΛ hyperons in polarised muon DIS. European Physical Journal C, 64(2), 171-179. Article 171. https://doi.org/10.1140/epjc/s10052-009-1143-7

@article{0786480c786548a3975d08034ca6a45c,

title = "Measurement of the longitudinal spin transfer to Λ and barΛ hyperons in polarised muon DIS",

abstract = "The longitudinal polarisation transfer from muons to Λ and \bar\Λ hyperons, DLLΛ(barΛ),has been studied in deep-inelastic scattering off an unpolarised isoscalar target at the COMPASS experiment at CERN. The spin transfers to Λ and barΛ produced in the current fragmentation region exhibit different behaviours as a function of x and x F. The measured x and x F dependences of D LL Λ are compatible with zero, while D LLbarΛ tends to increase with x F, reaching values of 0.4-0.5. The resulting average values are D LL Λ = -0.012±0.047±0.024 and DLLbarΛ = 0.249±0.056±0.049. These results are discussed in the frame of recent model calculations.",

author = "M. Alekseev and Alexakhin, {V. Yu} and Yu Alexandrov and Alexeev, {G. D.} and A. Amoroso and A. Austregesilo and B. Bade{\l}ek and F. Balestra and J. Ball and J. Barth and G. Baum and Y. Bedfer and J. Bernhard and R. Bertini and M. Bettinelli and R. Birsa and J. Bisplinghoff and P. Bordalo and F. Bradamante and A. Bravar and A. Bressan and G. Brona and E. Burtin and Bussa, {M. P.} and A. Chapiro and M. Chiosso and Chung, {S. U.} and A. Cicuttin and M. Colantoni and Crespo, {M. L.} and {Dalla Torre}, S. and T. Dafni and S. Das and Dasgupta, {S. S.} and Denisov, {O. Yu} and L. Dhara and V. Diaz and Dinkelbach, {A. M.} and Donskov, {S. V.} 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 A. Ferrero and M. Finger and M. Finger and H. Fischer and C. Franco and Friedrich, {J. M.} and R. Garfagnini and F. Gautheron and Gavrichtchouk, {O. P.} and R. Gazda and S. Gerassimov and R. Geyer and M. Giorgi and B. Gobbo and S. Goertz and S. Grabm{\"u}ller and Grajek, {O. A.} and A. Grasso and B. Grube and R. Gushterski and A. Guskov and F. Haas and {Von Harrach}, D. and T. Hasegawa and J. Heckmann and Heinsius, {F. H.} and M. Hermann and R. Hermann and F. Herrmann and C. He and F. Hinterberger and N. Horikawa and Ch H{\"o}ppner and N. D'Hose and C. Ilgner and S. Ishimoto and O. Ivanov and Yu Ivanshin and B. Iven and T. Iwata and R. Jahn and P. Jasinski and G. Jegou and R. Joosten and E. Kabu 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 R. Konopka and I. Konorov and Konstantinov, {V. F.} and A. Korzenev and Kotzinian, {A. M.} and O. Kouznetsov and K. Kowalik and M. Kr{\"a}mer and A. Kral and Kroumchtein, {Z. V.} and R. Kuhn and F. Kunne and K. Kurek and {Le Goff}, {J. M.} and Lednev, {A. A.} and A. Lehmann and S. Levorato and J. Lichtenstadt and T. Liska and A. Maggiora and M. Maggiora and A. Magnon and Mallot, {G. K.} and A. Mann and C. Marchand and J. Marroncle and A. Martin and J. Marzec and F. Massmann and T. Matsuda and Maximov, {A. N.} and W. Meyer and T. Michigami and Mikhailov, {Yu V.} and Moinester, {M. A.} and A. Mutter and A. Nagaytsev and T. Nagel and J. Nassalski and S. Negrini and F. Nerling and S. Neubert and D. Neyret and Nikolaenko, {V. I.} and Olshevsky, {A. G.} and M. Ostrick and A. Padee and R. Panknin and D. Panzieri and B. Parsamyan and S. Paul and B. Pawlukiewicz-Kaminska and E. Perevalova and G. Pesaro and Peshekhonov, {D. V.} and G. Piragino and S. Platchkov and J. Pochodzalla and J. Polak and Polyakov, {V. A.} and G. Pontecorvo and J. Pretz and C. Quintans and Rajotte, {J. F.} and S. Ramos and V. Rapatsky and G. Reicherz and D. Reggiani and A. Richter and F. Robinet and E. Rocco and E. Rondio and Ryabchikov, {D. I.} and Samoylenko, {V. D.} and A. Sandacz and H. Santos and Sapozhnikov, {M. G.} and S. Sarkar and G. Sbrizzai and P. Schiavon and C. Schill and L. Schmitt and W. Schr{\"o}der 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 S. Sosio and F. Sozzi and A. Srnka and M. Stolarski and M. Sulc and R. Sulej and S. Takekawa and S. Tessaro and F. Tessarotto and A. Teufel and Tkatchev, {L. G.} and G. Venugopal and M. Virius and Vlassov, {N. V.} and A. Vossen and Q. Weitzel and R. Windmolders and W. Wi{\'s}licki and H. Wollny and K. Zaremba and E. Zemlyanichkina and M. Ziembicki and J. Zhao and N. Zhuravlev and A. Zvyagin",

year = "2009",

month = nov,

doi = "10.1140/epjc/s10052-009-1143-7",

language = "English",

volume = "64",

pages = "171--179",

journal = "European Physical Journal C",

issn = "1434-6044",

publisher = "Springer New York",

number = "2",

}

Alekseev, M, Alexakhin, VY, Alexandrov, Y, Alexeev, GD, Amoroso, A, Austregesilo, A, Badełek, B, Balestra, F, Ball, J, Barth, J, Baum, G, Bedfer, Y, Bernhard, J, Bertini, R, Bettinelli, M, Birsa, R, Bisplinghoff, J, Bordalo, P, Bradamante, F, Bravar, A, Bressan, A, Brona, G, Burtin, E, Bussa, MP, Chapiro, A, Chiosso, M, Chung, SU, Cicuttin, A, Colantoni, M, Crespo, ML, Dalla Torre, S, Dafni, T, Das, S, Dasgupta, SS, Denisov, OY, Dhara, L, Diaz, V, Dinkelbach, AM, Donskov, SV, Doshita, N, Duic, V, Dünnweber, W, Efremov, A, Eversheim, PD, Eyrich, W, Faessler, M, Ferrero, A, Finger, M, Finger, M, Fischer, H, Franco, C, Friedrich, JM, Garfagnini, R, Gautheron, F, Gavrichtchouk, OP, Gazda, R, Gerassimov, S, Geyer, R, Giorgi, M, Gobbo, B, Goertz, S, Grabmüller, S, Grajek, OA, Grasso, A, Grube, B, Gushterski, R, Guskov, A, Haas, F, Von Harrach, D, Hasegawa, T, Heckmann, J, Heinsius, FH, Hermann, M, Hermann, R, Herrmann, F, He, C, Hinterberger, F, Horikawa, N, Höppner, C, D'Hose, N, Ilgner, C, Ishimoto, S, Ivanov, O, Ivanshin, Y, Iven, B, Iwata, T, Jahn, R, Jasinski, P, Jegou, G, Joosten, R, Kabu, 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, Konopka, R, Konorov, I, Konstantinov, VF, Korzenev, A, Kotzinian, AM, Kouznetsov, O, Kowalik, K, Krämer, M, Kral, A, Kroumchtein, ZV, Kuhn, R, Kunne, F, Kurek, K, Le Goff, JM, Lednev, AA, Lehmann, A, Levorato, S, Lichtenstadt, J, Liska, T, Maggiora, A, Maggiora, M, Magnon, A, Mallot, GK, Mann, A, Marchand, C, Marroncle, J, Martin, A, Marzec, J, Massmann, F, Matsuda, T, Maximov, AN, Meyer, W, Michigami, T, Mikhailov, YV, Moinester, MA, Mutter, A, Nagaytsev, A, Nagel, T, Nassalski, J, Negrini, S, Nerling, F, Neubert, S, Neyret, D, Nikolaenko, VI, Olshevsky, AG, Ostrick, M, Padee, A, Panknin, R, Panzieri, D, Parsamyan, B, Paul, S, Pawlukiewicz-Kaminska, B, Perevalova, E, Pesaro, G, Peshekhonov, DV, Piragino, G, Platchkov, S, Pochodzalla, J, Polak, J, Polyakov, VA, Pontecorvo, G, Pretz, J, Quintans, C, Rajotte, JF, Ramos, S, Rapatsky, V, Reicherz, G, Reggiani, D, Richter, A, Robinet, F, Rocco, E, Rondio, E, Ryabchikov, DI, Samoylenko, VD, Sandacz, A, Santos, H, Sapozhnikov, MG, Sarkar, S, Sbrizzai, G, Schiavon, P, Schill, C, Schmitt, L, Schröder, W, Shevchenko, OY, Siebert, HW, Silva, L, Sinha, L, Sissakian, AN, Slunecka, M, Smirnov, GI, Sosio, S, Sozzi, F, Srnka, A, Stolarski, M, Sulc, M, Sulej, R, Takekawa, S, Tessaro, S, Tessarotto, F, Teufel, A, Tkatchev, LG, Venugopal, G, Virius, M, Vlassov, NV, Vossen, A, Weitzel, Q, Windmolders, R, Wiślicki, W, Wollny, H, Zaremba, K, Zemlyanichkina, E, Ziembicki, M, Zhao, J, Zhuravlev, N & Zvyagin, A 2009, 'Measurement of the longitudinal spin transfer to Λ and barΛ hyperons in polarised muon DIS', European Physical Journal C, vol. 64, no. 2, 171, pp. 171-179. https://doi.org/10.1140/epjc/s10052-009-1143-7

TY - JOUR

T1 - Measurement of the longitudinal spin transfer to Λ and barΛ hyperons in polarised muon DIS

AU - Alekseev, M.

AU - Alexakhin, V. Yu

AU - Alexandrov, Yu

AU - Alexeev, G. D.

AU - Amoroso, A.

AU - Austregesilo, A.

AU - Badełek, B.

AU - Balestra, F.

AU - Ball, J.

AU - Barth, J.

AU - Baum, G.

AU - Bedfer, Y.

AU - Bernhard, J.

AU - Bertini, R.

AU - Bettinelli, M.

AU - Birsa, R.

AU - Bisplinghoff, J.

AU - Bordalo, P.

AU - Bradamante, F.

AU - Bravar, A.

AU - Bressan, A.

AU - Brona, G.

AU - Burtin, E.

AU - Bussa, M. P.

AU - Chapiro, A.

AU - Chiosso, M.

AU - Chung, S. U.

AU - Cicuttin, A.

AU - Colantoni, M.

AU - Crespo, M. L.

AU - Dalla Torre, S.

AU - Dafni, T.

AU - Das, S.

AU - Dasgupta, S. S.

AU - Denisov, O. Yu

AU - Dhara, L.

AU - Diaz, V.

AU - Dinkelbach, A. M.

AU - Donskov, S. V.

AU - Doshita, N.

AU - Duic, V.

AU - Dünnweber, W.

AU - Efremov, A.

AU - Eversheim, P. D.

AU - Eyrich, W.

AU - Faessler, M.

AU - Ferrero, A.

AU - Finger, M.

AU - Fischer, H.

AU - Franco, C.

AU - Friedrich, J. M.

AU - Garfagnini, R.

AU - Gautheron, F.

AU - Gavrichtchouk, O. P.

AU - Gazda, R.

AU - Gerassimov, S.

AU - Geyer, R.

AU - Giorgi, M.

AU - Gobbo, B.

AU - Goertz, S.

AU - Grabmüller, S.

AU - Grajek, O. A.

AU - Grasso, A.

AU - Grube, B.

AU - Gushterski, R.

AU - Guskov, A.

AU - Haas, F.

AU - Von Harrach, D.

AU - Hasegawa, T.

AU - Heckmann, J.

AU - Heinsius, F. H.

AU - Hermann, M.

AU - Hermann, R.

AU - Herrmann, F.

AU - He, C.

AU - Hinterberger, F.

AU - Horikawa, N.

AU - Höppner, Ch

AU - D'Hose, N.

AU - Ilgner, C.

AU - Ishimoto, S.

AU - Ivanov, O.

AU - Ivanshin, Yu

AU - Iven, B.

AU - Iwata, T.

AU - Jahn, R.

AU - Jasinski, P.

AU - Jegou, G.

AU - Joosten, R.

AU - Kabu, 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 - Konopka, R.

AU - Konorov, I.

AU - Konstantinov, V. F.

AU - Korzenev, A.

AU - Kotzinian, A. M.

AU - Kouznetsov, O.

AU - Kowalik, K.

AU - Krämer, M.

AU - Kral, A.

AU - Kroumchtein, Z. V.

AU - Kuhn, R.

AU - Kunne, F.

AU - Kurek, K.

AU - Le Goff, J. M.

AU - Lednev, A. A.

AU - Lehmann, A.

AU - Levorato, S.

AU - Lichtenstadt, J.

AU - Liska, T.

AU - Maggiora, A.

AU - Maggiora, M.

AU - Magnon, A.

AU - Mallot, G. K.

AU - Mann, A.

AU - Marchand, C.

AU - Marroncle, J.

AU - Martin, A.

AU - Marzec, J.

AU - Massmann, F.

AU - Matsuda, T.

AU - Maximov, A. N.

AU - Meyer, W.

AU - Michigami, T.

AU - Mikhailov, Yu V.

AU - Moinester, M. A.

AU - Mutter, A.

AU - Nagaytsev, A.

AU - Nagel, T.

AU - Nassalski, J.

AU - Negrini, S.

AU - Nerling, F.

AU - Neubert, S.

AU - Neyret, D.

AU - Nikolaenko, V. I.

AU - Olshevsky, A. G.

AU - Ostrick, M.

AU - Padee, A.

AU - Panknin, R.

AU - Panzieri, D.

AU - Parsamyan, B.

AU - Paul, S.

AU - Pawlukiewicz-Kaminska, B.

AU - Perevalova, E.

AU - Pesaro, G.

AU - Peshekhonov, D. V.

AU - Piragino, G.

AU - Platchkov, S.

AU - Pochodzalla, J.

AU - Polak, J.

AU - Polyakov, V. A.

AU - Pontecorvo, G.

AU - Pretz, J.

AU - Quintans, C.

AU - Rajotte, J. F.

AU - Ramos, S.

AU - Rapatsky, V.

AU - Reicherz, G.

AU - Reggiani, D.

AU - Richter, A.

AU - Robinet, F.

AU - Rocco, E.

AU - Rondio, E.

AU - Ryabchikov, D. I.

AU - Samoylenko, V. D.

AU - Sandacz, A.

AU - Santos, H.

AU - Sapozhnikov, M. G.

AU - Sarkar, S.

AU - Sbrizzai, G.

AU - Schiavon, P.

AU - Schill, C.

AU - Schmitt, L.

AU - Schröder, W.

AU - Shevchenko, O. Yu

AU - Siebert, H. W.

AU - Silva, L.

AU - Sinha, L.

AU - Sissakian, A. N.

AU - Slunecka, M.

AU - Smirnov, G. I.

AU - Sosio, S.

AU - Sozzi, F.

AU - Srnka, A.

AU - Stolarski, M.

AU - Sulc, M.

AU - Sulej, R.

AU - Takekawa, S.

AU - Tessaro, S.

AU - Tessarotto, F.

AU - Teufel, A.

AU - Tkatchev, L. G.

AU - Venugopal, G.

AU - Virius, M.

AU - Vlassov, N. V.

AU - Vossen, A.

AU - Weitzel, Q.

AU - Windmolders, R.

AU - Wiślicki, W.

AU - Wollny, H.

AU - Zaremba, K.

AU - Zemlyanichkina, E.

AU - Ziembicki, M.

AU - Zhao, J.

AU - Zhuravlev, N.

AU - Zvyagin, A.

PY - 2009/11

Y1 - 2009/11

N2 - The longitudinal polarisation transfer from muons to Λ and \bar\Λ hyperons, DLLΛ(barΛ),has been studied in deep-inelastic scattering off an unpolarised isoscalar target at the COMPASS experiment at CERN. The spin transfers to Λ and barΛ produced in the current fragmentation region exhibit different behaviours as a function of x and x F. The measured x and x F dependences of D LL Λ are compatible with zero, while D LLbarΛ tends to increase with x F, reaching values of 0.4-0.5. The resulting average values are D LL Λ = -0.012±0.047±0.024 and DLLbarΛ = 0.249±0.056±0.049. These results are discussed in the frame of recent model calculations.

AB - The longitudinal polarisation transfer from muons to Λ and \bar\Λ hyperons, DLLΛ(barΛ),has been studied in deep-inelastic scattering off an unpolarised isoscalar target at the COMPASS experiment at CERN. The spin transfers to Λ and barΛ produced in the current fragmentation region exhibit different behaviours as a function of x and x F. The measured x and x F dependences of D LL Λ are compatible with zero, while D LLbarΛ tends to increase with x F, reaching values of 0.4-0.5. The resulting average values are D LL Λ = -0.012±0.047±0.024 and DLLbarΛ = 0.249±0.056±0.049. These results are discussed in the frame of recent model calculations.

UR - http://www.scopus.com/inward/record.url?scp=70350396594&partnerID=8YFLogxK

U2 - 10.1140/epjc/s10052-009-1143-7

DO - 10.1140/epjc/s10052-009-1143-7

M3 - Article

AN - SCOPUS:70350396594

SN - 1434-6044

VL - 64

SP - 171

EP - 179

JO - European Physical Journal C

JF - European Physical Journal C

IS - 2

M1 - 171

ER -

Measurement of the longitudinal spin transfer to Λ and barΛ hyperons in polarised muon DIS

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