Measurement of the longitudinal spin transfer to Λ and 

                $\bar{\varLambda}$
               
hyperons in polarised muon DIS

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

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

Cited by 40 publications

(14 citation statements)

References 34 publications

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“…Since several models predicted that the polarization of the Λ is largely associated with a polarized strange quark, one expected in the SIDIS process p → ΛX, in which G Λ/q 1 (z) enters [568,569], a strong sensitivity to the strange quark helicity distribution in the proton. The FF G Λ/q 1 (z) also shows up in p → ΛX, a process which was measured by the E665 Collaboration [570], the HERMES Collaboration [571,572], and the COMPASS Collaboration [573]. However, so far there is no data available for p → ΛX.…”

Section: Ffs For Polarized Hadronsmentioning

confidence: 99%

Parton fragmentation functions

Metz

Vossen

2016

Progress in Particle and Nuclear Physics

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177

169

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The field of fragmentation functions of light quarks and gluons is reviewed. In addition to integrated fragmentation functions, attention is paid to the dependence of fragmentation functions on transverse momenta and on polarization degrees of freedom. Higher-twist and di-hadron fragmentation functions are considered as well. Moreover, the review covers both theoretical and experimental developments in hadron production in electron-positron annihilation, deep-inelastic lepton-nucleon scattering, and proton-proton collisions.

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Section: Ffs For Polarized Hadronsmentioning

confidence: 99%

Parton fragmentation functions

Metz

Vossen

2016

Progress in Particle and Nuclear Physics

Self Cite

177

169

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“…Specifically, it gives access to the strange quark helicity densities at high x via the measurement of the longitudinal spin transfer D LL from a longitudinal polarised target to Λ andΛ hyperons. So far, only limited set of experimental D LL results exist [369,370] and their precision is far from being satisfactory.…”

Section: Accessing the Strange Quark-helicity Densities At High Xmentioning

confidence: 99%

Studies of various physics effects on an on-axis LHCD experiment using numerical tools

et al. 2018

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We review the context, the motivations and the expected performances of a comprehensive and ambitious fixed-target program using the multi-TeV proton and ion LHC beams. We also provide a detailed account of the different possible technical implementations ranging from an internal wire target to a full dedicated beam line extracted with a bent crystal. The possibilities offered by the use of the ALICE and LHCb detectors in the fixed-target mode are also reviewed.

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“…When these baryons are produced from a u or d quark and then decay to a Λ, some of the quark's initial polarization is expected to be preserved in the Λ polarization [23,25]. Polarized lepton or neutrino deep inelastic scattering experiments [26][27][28][29] and polarized pp collisions [30,31] can in principle provide useful information on this question. However, they are currently limited by statistics and uncertainties regarding the strange parton distribution functions [26,31].…”

Section: Introduction and Overviewmentioning

confidence: 99%

“…Polarized lepton or neutrino deep inelastic scattering experiments [26][27][28][29] and polarized pp collisions [30,31] can in principle provide useful information on this question. However, they are currently limited by statistics and uncertainties regarding the strange parton distribution functions [26,31]. ATLAS and CMS can attempt to observe the effect more directly using W + → ud decays in tt samples.…”

Section: Introduction and Overviewmentioning

confidence: 99%

Measuring polarization of light quarks at ATLAS and CMS

Kats

2015

Phys. Rev. D

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Polarization of strange quarks is preserved to a high degree when they hadronize into Lambda baryons, as observed in Z decays at LEP. This opens up the possibility for ATLAS and CMS to use strange-quark polarization measurements as a characterization tool for new physics scenarios that produce such quarks. Measurements in ttbar samples would be useful for obtaining additional information about the polarization transfer from the strange quark to the Lambda baryon. Already with 100/fb in Run 2, ttbar samples in ATLAS and CMS become competitive in sensitivity with the Z samples of the LEP experiments. Moreover, while the LEP measurements were done inclusively over all quark flavors, which makes their interpretation dependent on various modeling assumptions, ttbar events at the LHC offer multiple handles for disentangling the different contributions experimentally. We also discuss the possibility of measuring polarizations of up and down quarks.Comment: 16 pages; v2: minor improvements, published versio

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Measurement of the longitudinal spin transfer to Λ and $\bar{\varLambda}$ hyperons in polarised muon DIS

Cited by 40 publications

References 34 publications

Parton fragmentation functions

Parton fragmentation functions

Studies of various physics effects on an on-axis LHCD experiment using numerical tools

Measuring polarization of light quarks at ATLAS and CMS

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