Flavour separation of helicity distributions from deep inelastic muon–deuteron scattering

Alekseev, M.; Michigami, T.; Venugopal, G.; Hermann, R.; Wollny, H.; Kunne, F.; Pontecorvo, G. B.; Teufel, Andreas; Austregesilo, A.; Kang, D.; Bernhard, J.; Pawlukiewicz-Kaminska, B.; Crespo, M.L.; Pretz, J.; Matsuda, T.; Höppner, Ch.; Das, Sudipta; Martin, A.; Samoylenko, V.D.; Sapozhnikov, M. G.; Gautheron, F.; Smirnov, G.I.; Meyer, W.; Tessarotto, F.; Marchand, Claude; Wenzl, K.; Kolosov, V.N.; Dhara, L.; Zhao, J.; Jasinski, P.; Silva, L.; Kiefer, J.; Schmitt, L.; Hinterberger, F.; Kabuß, E.; Parsamyan, B.; Siebert, H. W.; Zhuravlev, N.; Dinkelbach, A.M.; Robinet, F.; Piragino, G.; Burtin, E.; Kisselev, Yu.; Padee, A.; Nikolaenko, V.; Franco, C.; Srnka, A.; Platchkov, S.; Rondio, E.; Gobbo, B.; Shevchenko, O.Yu.; Savin, I.; Chung, S. U.; Peshekhonov, D.V.; Ramos, S.; Zvyagin, A.; Lehmann, A.; Klein, Frank; Koblitz, S.; Ivanshin, Yu.; Baum, G.; Оlshevsky, А.G.; Sinha, L.; Guskov, A.; Ryabchikov, D.I.; Nassalski, J.; Chapiró, A.; Konopka, R.; Virius, M.; Alexeev, G. D.; Dafní, T.; Sosio, S.; Maggiora, A.; Kurek, K.; Ostrick, M.; Bradamante, F.; Brona, G.; Kowalik, K.; Grajek, O.A.; Barth, J.; Bedfer, Y.; Santos, H.; Lednev, A.A.; Ferrero, A.; Денисов, О.; Mallot, G.K.; Eyrich, W.; Konorov, I.; Sarkar, S.; Marzec, J.; Rocco, E.; Schiavon, P.; Donskov, S.V.; Garfagnini, R.; Bisplinghoff, J.; Magnon, A.; Rajotte, Jean-François; Gavrichtchouk, O.P.; Grabmüller, S.; Kondo, K.; Grube, B.; Ivanov, О. N.; Dasgupta, S.; Kotzinian, A.M.; Panzieri, D.; Bravar, A.; Korzenev, A.; Lichtenstadt, J.; Zavertyaev, M.; Neyret, D.; Khaustov, G.V.; Sbrizzai, G.; Goertz, S.; Král, A.; Bertini, R.; Vlassov, N.V.; Bussa, M. P.; Ziembicki, M.; Khokhlov, Yu.A.; Levorato, S.; Kroumchtein, Z.V.; Kühn, Ralf; Sulej, R.; Grasso, A.; Windmolders, R.; Reggiani, D.; Colantoni, M.; Pesaro, G.; Duic, V.; Maximov, A.; Sandacz, A.; Gerassimov, S.; Dünnweber, W.; Birsa, R.; Alexandrov, Yu.; Stolarski, M.; Jegou, G.; Quintans, C.; Ефремов, А. В.; Eversheim, P.D.; Klimaszewski, K.; Maggiora, M.; Goff, J. M. Le; Ball, J.; Heß, C.; Jahn, R.; Ilgner, C.; Faessler, M.; Harrach, D. von; Amoroso, A.; Finger, M.; Wiślicki, W.; Herrmann, F.; Königsmann, K.; Sissakian, A.; Sozzi, F.; Šulc, M.; Panknin, R.; Badełek, B.; Mikhailov, Yu.V.; Alexakhin, V.; Horikawa, N.; Krämer, M.; Polák, Jaroslav; Doshita, N.; Heinsius, F. H.; Fischer, H.; Ishimoto, S.; Richter, A.; Mutter, A.; Paul, S.; Takekawa, S.; Schröder, W.; Заремба, К.; Torre, S. Dalla; Hagemann, R.; Negrini, S.; Perevalova, E.; Neubert, S.; Nagaytsev, A.; Haas, Florian; Zemlyanichkina, E.; Käfer, Wolfgang; Vossen, A.; Rapatsky, V.; Iwata, T.; Ketzer, B.; Koivuniemi, J.H.; Tessaro, S.; Marroncle, J.; Gushterski, R.; Reicherz, G.; Weitzel, Q.; Nerling, F.; Константинов, В.Ф.; Geyer, R.; Schill, C.; Komissarov, E.V.; Diaz, V.; Nagel, T.; Cicuttin, A.; Jm, Friedrich; Tkatchev, L. G.; Giorgi, M. A.; Heckmann, J.; Pochodzalla, J.; Bettinelli, M.; Balestra, F.; d’Hose, N.; Massmann, F.; Polyakov, V.A.; Moinester,; Joosten, R.; Mann, A.; Kouznetsov, O.; Alaoui, A. El; Slunečka, M.; Bressan, A.; Bordalo, P.; Hasegawa, T.; Gazda, R.; Liška, T.; Chiosso, M.

doi:10.1016/j.physletb.2009.08.065

Cited by 75 publications

(30 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The first comment concerns the ϕ-independent terms a h± 0 (x). Figure 5 shows that there is a good agreement between the COMPASS data on a h± 0 (x) /D 0 (x, y) and A h 1d (x) [5,11] confirming expectations that the main contributions to a h± 0 (x) are coming from the helicity PDF g 1 (x).…”

Section: Conclusion and Discussionsupporting

confidence: 68%

“…For the 2006 data taking with the 6 LiD longitudinally polarised target, a modified COMPASS set up was used that is described elsewhere [5]. Major improvements, influencing the present analysis, were, first, the replacement of two 60-cm long target cells denoted as U and D by three cells (U, M and D) of lengths 30, 60 and 30 cm, respectively, second, replacement of the target solenoid magnet by new one with wider aperture, third, installation of the electromagnetic calorimeter ECAL1 in front of the hadron calorimeter HCAL1.…”

Section: The 2006 Data Analysismentioning

confidence: 99%

See 1 more Smart Citation

Azimuthal asymmetries of hadrons produced in muon SIDIS off longitudinally polarized deuterons

Savin

2016

J. Phys.: Conf. Ser.

Self Cite

View full text Add to dashboard Cite

Abstract. The azimuthal asymmetries in the cross sections of charged-hadron production in the muon SIDIS reactions off the longitudinally polarised deuterons are determined using the COMPASS data of 2006 and combined data of [2002][2003][2004][2005][2006]. The asymmetries are presented as functions of the hadron azimuthal angle ϕ in two ways: first, for hadrons integrated over the kinematic variables and, second, as a function of one of the kinematic variables x, z or p h T while integrating over two other. In each case asymmetries were fitted by functions included the ϕ-independent terms and terms amplitude of which are modulated with ϕ as predicted by the theory: sin ϕ, sin 2ϕ, sin 3ϕ and cos ϕ. Results for amplitudes are presented and discussed.

show abstract

Section: Conclusion and Discussionsupporting

confidence: 68%

Section: The 2006 Data Analysismentioning

confidence: 99%

Azimuthal asymmetries of hadrons produced in muon SIDIS off longitudinally polarized deuterons

Savin

2016

J. Phys.: Conf. Ser.

Self Cite

View full text Add to dashboard Cite

show abstract

“…The width of the profiles, read off at a certain increase in ∆χ 2 that is still tolerated for a good fit, serves as an estimator for the uncertainty on the truncated moment ∆q(x min , x max , Q 2 ). As reference profiles we take the full dataset used in the DSSV global analysis [7] augmented by the latest DIS data from the COMPASS fixed-target experiment [45]. This fit is often referred to as DSSV+ [10,46].…”

Section: Expectations For Spin Asymmetries and Their Impact On Pdfmentioning

confidence: 99%

Prospects for charged current deep-inelastic scattering off polarized nucleons at a future electron-ion collider

et al. 2013

View full text Add to dashboard Cite

We present a detailed phenomenological study of charged-current-mediated deep-inelastic scattering off longitudinally polarized nucleons at a future Electron-Ion Collider. A new version of the event generator package Djangoh, extended by capabilities to handle processes with polarized nucleons, is introduced and used to simulate charged current deep-inelastic scattering including QED, QCD, and electroweak radiative effects. We carefully explore the range of validity and the accuracy of the Jacquet-Blondel method to reconstruct the relevant kinematic variables from the measured hadronic final state in charged current events, assuming realistic detector performance parameters. Finally, we estimate the impact of the simulated charged current single-spin asymmetries on determinations of helicity parton distributions in the context of a global QCD analysis at next-to-leading order accuracy.

show abstract

“…Recently, the COMPASS collaboration has published new DIS [25] and SIDIS [26,27] data. The latter extend the coverage in x down to about x 5 × 10 −3 , almost an order of magnitude lower than the kinematic reach of the HERMES data [28] used in the DSSV global analysis of 2008 [13].…”

Section: Recent Dis and Sidis Datamentioning

confidence: 99%

“…In particular, the new kaon data are expected to serve as an important check of the validity of the strangeness density obtained in the DSSV analysis discussed above, which instead of favoring a negative polarization as in most fits based exclusively on DIS data, prefers a vanishing or perhaps even slightly positive ∆s in the measured range of x. Figure 3 shows a detailed comparison [29] between the new proton SIDIS spin asymmetries from COMPASS [26,27] and the original DSSV fit (dashed lines). Also shown is the result of a re-analysis at NLO [29] accuracy (denoted as "DSSV+") based on the updated data set.…”

Section: Recent Dis and Sidis Datamentioning

confidence: 99%

QCD spin physics: Partonic spin structure of the nucleon

Florian¹,

Sassot²,

Stratmann³

et al. 2012

Progress in Particle and Nuclear Physics

View full text Add to dashboard Cite

We discuss some recent developments concerning the nucleon's helicity parton distribution functions: New preliminary data from jet production at RHIC suggest for the first time a non-vanishing polarization of gluons in the nucleon. SIDIS measurements at COMPASS provide better constraints on the strange and light sea quark helicity distributions. Single-longitudinal spin asymmetries in W -boson production have been observed at RHIC and will ultimately give new insights into the light quark and anti-quark helicity structure of the nucleon.

show abstract

Flavour separation of helicity distributions from deep inelastic muon–deuteron scattering

Cited by 75 publications

References 36 publications

Azimuthal asymmetries of hadrons produced in muon SIDIS off longitudinally polarized deuterons

Azimuthal asymmetries of hadrons produced in muon SIDIS off longitudinally polarized deuterons

Prospects for charged current deep-inelastic scattering off polarized nucleons at a future electron-ion collider

QCD spin physics: Partonic spin structure of the nucleon

Contact Info

Product

Resources

About