Antiproton over proton and K$^-$ over K$^+$ multiplicity ratios at high $z$ in DIS
- Alexeev, G.D.
- Alexeev, M. G.
- Amoroso, A.
- Andrieux, V.
- Anosov, V.
- Antoshkin, A.
- Augsten, K.
- Augustyniak, W.
- Azevedo, C.D.R.
- Badelek, B.
- Balestra, F.
- Ball, M.
- Barth, J.
- Beck, R.
- Bedfer, Y.
- Berenguer Antequera, J.
- Bernhard, J.
- Bodlak, M.
- Bradamante, F.
- Bressan, A.
- Buechele, M.
- Burtsev, V.E.
- Chang, W.-C.
- Chatterjee, C.
- Chiosso, M.
- Chumakov, A.G.
- Chung, S.-U.
- Cicuttin, A.
- Correia, P.M.M.
- Crespo, M.L.
- d'Ago, D.
- Dalla Torre, S.
- Dasgupta, S.S.
- Dasgupta, S.
- Denisenko, I.
- Denisov, O.Yu.
- Donskov, S.V.
- Doshita, N.
- Dreisbach, Ch.
- Duennweber, W.
- Dusaev, R.R.
- Efremov, A.
- Eversheim, P.D.
- Faccioli, P.
- Faessler, M.
- Finger, M.
- Finger, M.
- Fischer, H.
- Franco, C.
- Friedrich, J.M.
- Frolov, V.
- Gautheron, F.
- Gavrichtchouk, O.P.
- Gerassimov, S.
- Giarra, J.
- Gnesi, I.
- Gorzellik, M.
- Grasso, A.
- Gridin, A.
- Grosse Perdekamp, M.
- Grube, B.
- Guskov, A.
- von Harrach, D.
- Heitz, R.
- Herrmann, F.
- Horikawa, N.
- d'Hose, N.
- Hsieh, C.-Y.
- Huber, S.
- Ishimoto, S.
- Ivanov, A.
- Iwata, T.
- Jandek, M.
- Jary, T.
- Joosten, R.
- Joerg, P.
- Kabuss, E.
- Kaspar, F.
- Kerbizi, A.
- Ketzer, B.
- Khaustov, G.V.
- Khokhlov, Yu.A.
- Kisselev, Yu.
- Klein, F.
- Koivuniemi, J.H.
- Kolosov, V.N.
- Kondo Horikawa, K.
- Konorov, I.
- Konstantinov, V.F.
- Kotzinian, A.M.
- Kouznetsov, O.M.
- Koval, A.
- Kral, Z.
- Krinner, F.
- Kulinich, Y.
- Kunne, F.
- Kurek, K.
- Kurjata, R.P.
- Kveton, A.
- Lavickova, K.
- Levorato, S.
- Lian, Y.-S.
- Lichtenstadt, J.
- Lin, P.-J.
- Longo, R.
- Lyubovitskij, V.E.
- Maggiora, A.
- Magnon, A.
- Makins, N.
- Makke, N.
- Mallot, G.K.
- Maltsev, A.
- Mamon, S.A.
- Marianski, B.
- Martin, A.
- Marzec, J.
- Matousek, J.
- Matsuda, T.
- Mattson, G.
- Meshcheryakov, G.V.
- Meyer, M.
- Meyer, W.
- Mikhailov, Yu.V.
- Mikhasenko, M.
- Mitrofanov, E.
- Mitrofanov, N.
- Miyachi, Y.
- Moretti, A.
- Nagaytsev, A.
- Naim, C.
- Neyret, D.
- Novy, J.
- Nowak, W.-D.
- Nukazuka, G.
- Nunes, A.S.
- Olshevskiy, A.G.
- Ostrick, M.
- Panzieri, D.
- Parsamyan, B.
- Paul, S.
- Pekeler, H.
- Peng, J.-C.
- Pesek, M.
- Peshekhonov, D.V.
- Peskova, M.
- Pierre, N.
- Platchkov, S.
- Pochodzalla, J.
- Polyakov, V.A.
- Pretz, J.
- Quaresma, M.
- Quintans, C.
- Reicherz, G.
- Riedl, C.
- Rudnicki, T.
- Ryabchikov, D.I.
- Rybnikov, A.
- Rychter, A.
- Samoylenko, V.D.
- Sandacz, A.
- Sarkar, S.
- Savin, I.A.
- Sbrizzai, G.
- Schmieden, H.
- Selyunin, A.
- Sinha, L.
- Slunecka, M.
- Smolik, J.
- Srnka, A.
- Steffen, D.
- Stolarski, M.
- Subrt, O.
- Sulc, M.
- Suzuki, H.
- Sznajder, P.
- Tessaro, S.
- Tessarotto, F.
- Thiel, A.
- Tomsa, J.
- Tosello, F.
- Townsend, A.
- Tskhay, V.
- Uhl, S.
- Vasilishin, B.I.
- Vauth, A.
- Veit, B.M.
- Veloso, J.
- Ventura, B.
- Vidon, A.
- Virius, M.
- Wagner, M.
- Wallner, S.
- Zaremba, K.
- Zavada, P.
- Zavertyaev, M.
- Zemko, M.
- Zemlyanichkina, E.
- Zhao, Y.
- Ziembicki, M.
DOIAbstract
International audienceThe antiparticle-over-particle multiplicity ratio is measured in deep-inelastic scattering for negatively and positively charged kaons and, for the first time, for antiprotons and protons. The data were obtained by the COMPASS Collaboration using a 160 GeV muon beam impinging on an isoscalar 6 LiD target. The regime of deep-inelastic scattering is ensured by requiring Q2 > 1 (GeV/ c ) 2 for the photon virtuality and W>5 GeV/ c2 for the invariant mass of the produced hadronic system. Bjorken- x is restricted to the range 0.01 to 0.40. Protons and antiprotons are identified in the momentum range from 20 GeV/ c to 60 GeV/ c and required to carry a large fraction of the virtual-photon energy, z>0.5 . In the whole studied z...
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