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Multiplicities of positive and negative pions, kaons and unidentified hadrons from deep-inelastic scattering of muons off a liquid hydrogen target

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arxiv 2410.12005 v1 pith:WTEURVFV submitted 2024-10-15 hep-ex hep-ph

G. D. Alexeev , M. G. Alexeev , C. Alice , A. Amoroso , V. Andrieux , V. Anosov , K. Augsten , W. Augustyniak
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C. D. R. Azevedo B. Badelek J. Barth R. Beck J. Beckers Y. Bedfer J. Bernhard M. Bodlak F. Bradamante A. Bressan W.-C. Chang C. Chatterjee M. Chiosso S.-U. Chung A. Cicuttin P. M. M. Correia M. L. Crespo D. D'Ago S. Dalla Torre S. S. Dasgupta S. Dasgupta F. Delcarro I. Denisenko O. Yu. Denisov S. V. Donskov N. Doshita Ch. Dreisbach W. Dünnweber R. R. Dusaev D. Ecker D. Eremeev P. Faccioli M. Faessler M. Finger M. Finger jr. H. Fischer K. J. Flöthner W. Florian J. M. Friedrich V. Frolov L.G. Garcia Ordòñez O. P. Gavrichtchouk S. Gerassimov J. Giarra D. Giordano A. Grasso A. Gridin M. Grosse Perdekamp B. Grube M. Grüner A. Guskov P. Haas D. von Harrach M. Hoffmann N. d'Hose C.-Y. Hsieh S. Ishimoto A. Ivanov T. Iwata V. Jary R. Joosten E. Kabuss F. Kaspar A. Kerbizi B. Ketzer A. Khatun G. V. Khaustov F. Klein J. H. Koivuniemi V. N. Kolosov K. Kondo Horikawa I. Konorov A. Yu. Korzenev A. M. Kotzinian O. M. Kouznetsov A. Koval Z. Kral F. Kunne K. Kurek R. P. Kurjata K. Lavickova S. Levorato Y.-S. Lian J. Lichtenstadt P.-J. Lin R. Longo V. E. Lyubovitskij A. Maggiora N. Makke G. K. Mallot A. Maltsev A. Martin J. Marzec J. Matoušek T. Matsuda C. Menezes Pires F. Metzger W. Meyer Yu. V. Mikhailov M. Mikhasenko E. Mitrofanov D. Miura Y. Miyachi R. Molina A. Moretti A. Nagaytsev D. Neyret M. Niemiec J. Nový W.-D. Nowak G. Nukazuka A. G. Olshevsky M. Ostrick D. Panzieri B. Parsamyan S. Paul H. Pekeler J.-C. Peng M. Pešek D. V. Peshekhonov M. Pešková S. Platchkov J. Pochodzalla V. A. Polyakov C. Quintans G. Reicherz C. Riedl D. I. Ryabchikov A. Rychter A. Rymbekova V. D. Samoylenko A. Sandacz S. Sarkar I. A. Savin G. Sbrizzai H. Schmieden A. Selyunin L. Sinha D. Spülbeck A. Srnka M. Stolarski M. Sulc H. Suzuki S. Tessaro F. Tessarotto A. Thiel F. Tosello A. Townsend T. Triloki V. Tskhay B. Valinoti B. M. Veit J.F.C.A. Veloso A. Vijayakumar M. Virius M. Wagner S. Wallner K. Zaremba M. Zavertyaev M. Zemko E. Zemlyanichkina M. Ziembicki
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classification hep-exhep-ph
keywords targetcompasscorrectionsdeep-inelasticdomainenergyhadronshydrogen
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

The multiplicities of positive and negative pions, kaons and unidentified hadrons produced in deep-inelastic scattering are measured in bins of the Bjorken scaling variable $x$, the relative virtual-photon energy $y$ and the fraction of the virtual-photon energy transferred to the final-state hadron $z$. Data were obtained by the COMPASS Collaboration using a 160 GeV muon beam of both electric charges and a liquid hydrogen target. These measurements cover the kinematic domain with photon virtuality $Q^2 > 1$ (GeV/$c)^2$, $0.004 < x < 0.4$, $0.1 < y < 0.7$ and $0.2 < z < 0.85$, in accordance with the kinematic domain used in earlier published COMPASS multiplicity measurements with an isoscalar target. The calculation of radiative corrections was improved by using the Monte Carlo generator DJANGOH, which results in up to 12\% larger corrections in the low-$x$ region.

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Cited by 3 Pith papers

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  1. Determination of Fragmentation Functions from Charge Asymmetries in Hadron Production

    hep-ph 2025-07 unverdicted novelty 7.0 of 10

    Non-singlet fragmentation functions of pions and kaons are determined at NNLO QCD from charge asymmetry measurements in e+e- annihilation and SIDIS, yielding a scaling index of 0.7 and strangeness suppression of 0.5.

  2. Flavor, transverse momentum, and azimuthal dependence of charged pion multiplicities in SIDIS with 10.6 GeV electrons

    hep-ex 2025-10 conditional novelty 6.0 of 10

    New JLab Hall C data show charged-pion SIDIS transverse-momentum shapes are nearly flavor-independent and π− azimuthal cos(φ*) moments are positive at high z.

  3. Measurements of transverse-momentum dependent effects in semi-inclusive DIS at COMPASS

    hep-ex 2026-05 unverdicted novelty 4.0 of 10

    New COMPASS data from polarized deuteron targets reduce uncertainties on d-quark transversity by a factor of 2.5 at large Bjorken x and will enable first extraction of the Boer-Mulders function from unpolarized nucleon data.

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