Polarization of Charmed $\Lambda(c$)+ Baryons Produced in Neutron - Carbon Interactions

The BIS-2 collaboration Aleev, A.N. ; Arefev, V.A. ; Balandin, V.P. ; et al.
Yad.Fiz. 43 (1986) 619-623, 1986.
Inspire Record 209855 DOI 10.17182/hepdata.39660

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2 data tables match query

No description provided.

No description provided.


Collins and Sivers asymmetries for pions and kaons in muon-deuteron DIS

The COMPASS collaboration Alekseev, M. ; Alexakhin, V.Yu. ; Alexandrov, Yu. ; et al.
Phys.Lett.B 673 (2009) 127-135, 2009.
Inspire Record 779473 DOI 10.17182/hepdata.48532

The measurements of the Collins and Sivers asymmetries of identified hadrons produced in deep-inelastic scattering of 160 GeV/c muons on a transversely polarised 6LiD target at COMPASS are presented. The results for charged pions and charged and neutral kaons correspond to all data available, which were collected from 2002 to 2004. For all final state particles both the Collins and Sivers asymmetries turn out to be small, compatible with zero within the statistical errors, in line with the previously published results for not identified charged hadrons, and with the expected cancellation between the u- and d-quark contributions.

30 data tables match query

The Collins and Sivers asymmetry as a function of X for 'ALL' positive pions from the 2003-2004 data.. Errors are statistical only.

The Collins and Sivers asymmetry as a function of PT for 'ALL' positive pions from the 2003-2004 data.. Errors are statistical only.

The Collins and Sivers asymmetry as a function of Z for 'ALL' positive pions from the 2003-2004 data.. Errors are statistical only.

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Production asymmetry of D/s from 600-GeV/c Sigma- and pi- beam.

The SELEX collaboration Kaya, M ; Alkhazov, G ; Atamantchouk, A.G ; et al.
Phys.Lett.B 558 (2003) 34-40, 2003.
Inspire Record 613961 DOI 10.17182/hepdata.41958

The production of $D_s^-$ relative to $D_s^+$ as a function of $x_F $ with 600 GeV/c $\Sigma^-$ beam is measured in the interval $0.15 < x_F < 0.7$ by the SELEX (E781) experiment at Fermilab. The integrated charge asymmetries with 600 GeV/c $\Sigma^-$ beam ($0.53\pm0.06$) and $\pi^-$ beam ($0.06\pm0.11$) are also compared. The results show the $\Sigma^-$ beam fragments play a role in the production of $D_s^-$, as suggested by the leading quark model.

2 data tables match query

Production asymmetry for the SIGMA- beam.

Integrated asymmetry (with XL > 0.15) for the PI- and SIGMA- beams.


AZIMUTHAL CORRELATIONS BETWEEN SECONDARY CHARGED HADRONS IN K- p INTERACTIONS AT 32-GeV

Ukhanov, M.N. ; Bogolyubsky, M.Yu. ; Bumazhnov, V.A. ; et al.
Sov.J.Nucl.Phys. 45 (1987) 640, 1987.
Inspire Record 230985 DOI 10.17182/hepdata.10413

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10 data tables match query

No description provided.

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No description provided.

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First measurement of the strange quark asymmetry at the Z0 peak

The DELPHI collaboration Abreu, P. ; Adam, W. ; Adye, T. ; et al.
Z.Phys.C 67 (1995) 1-14, 1995.
Inspire Record 382285 DOI 10.17182/hepdata.48256

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3 data tables match query

Measured forward backward asymmetries.

Forward-backward s-quark asymmetries from the separate processes.

Final s-quark forward-backward asymmetries.


SYSTEMATICS IN THE TRANSVERSE MOMENTUM DISTRIBUTIONS AND AZIMUTHAL CORRELATIONS IN THE INCLUSIVE K+ p REACTIONS AT 32-GeV/c

Tomaradze, A.G. ; Uvarov, V.A. ; Chliapnikov, P.V. ;
Sov.J.Nucl.Phys. 45 (1987) 70, 1987.
Inspire Record 223219 DOI 10.17182/hepdata.10309

None

1 data table match query

No description provided.


Flavour Separation of Helicity Distributions from Deep Inelastic Muon-Deuteron Scattering

The COMPASS collaboration Alekseev, M. ; Alexakhin, V.Yu. ; Alexandrov, Yu. ; et al.
Phys.Lett.B 680 (2009) 217-224, 2009.
Inspire Record 820721 DOI 10.17182/hepdata.55300

We present a LO evaluation of helicity densities of valence, \Delta u_v+\Delta d_v, non-strange sea, \Delta\bar{u}+\Delta\bar{d}, and strange quarks, \Delta s (assumed to be equal to \Delta\bar{s}). They have been obtained from the inclusive asymmetry A_{3,d} and the semi-inclusive asymmetries A^{\pi+}_{1,d}, A^{\pi-}_{1,d}, A^{K+}_{1,d}, A^{K-}_{1,d} measured in polarised deep inelastic muon-deuteron scattering. The full deuteron statistics of COMPASS (years 2002-2004 and 2006) has been used. The data cover the range Q^2 > 1 (GeV/c)^2 and 0.004<x<0.3. Both non-strange densities are found to be in a good agreement with previous measurements. The distribution of \Delta s(x) is compatible with zero in the whole measured range, in contrast to the shape of the strange quark helicity distribution obtained in most LO and NLO QCD fits. The sensitivity of the values of \Delta s(x) upon the choice of fragmentation functions used in the derivation is discussed.

2 data tables match query

Inclusive asymmetry as a function of X.

Charged pion and kaon semi-inclusive asymmetries as functions of X.


DIFFRACTION PROCESSES IN SIX BODY EXCLUSIVE K+ P REACTIONS AT 32-GEV/C. (IN RUSSIAN)

Azhinenko, I.V. ; Amaglobeli, N.S. ; Vorobev, A.P. ; et al.
Sov.J.Nucl.Phys. 46 (1987) 464, 1987.
Inspire Record 240069 DOI 10.17182/hepdata.10330

None

2 data tables match query

No description provided.

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Measurement of K0(S), Lambda, anti-Lambda production at HERA

The ZEUS collaboration Chekanov, S. ; Derrick, M. ; Magill, S. ; et al.
Eur.Phys.J.C 51 (2007) 1-23, 2007.
Inspire Record 734144 DOI 10.17182/hepdata.45796

The production of the neutral strange hadrons $K^{0}_{S}$, $\Lambda$ and $\bar{\Lambda}$ has been measured in $ep$ collisions at HERA using the ZEUS detector. Cross sections, baryon-to-meson ratios, relative yields of strange and charged light hadrons, $\Lambda$ ($\bar{\Lambda}$) asymmetry and polarization have been measured in three kinematic regions: $Q^2 > 25 \gev^2$: $5 < Q^2 < 25 \gev^2$: and in photoproduction ($Q^2 \simeq 0$). In photoproduction the presence of two hadronic jets, each with at least $5 \gev$ transverse energy, was required. The measurements agree in general with Monte Carlo models and are consistent with measurements made at $e^+ e^-$ colliders, except for an enhancement of baryon relative to meson production in photoproduction.

39 data tables match query

Asymmetry in LAMBDA/LAMBDABAR production in DIS events as a function of transverse momentum (lab). for Q**2 > 25 GeV**2.

Asymmetry in LAMBDA/LAMBDABAR production in DIS events as a function of pseudorapidity (lab). for Q**2 > 25 GeV**2.

Asymmetry in LAMBDA/LAMBDABAR production in DIS events as a function of Bjorken X. for Q**2 > 25 GeV**2.

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EXCLUSIVE REACTIONS IN pi+ p INTERACTIONS AT 32-GeV/c

Azhinenko, I.V. ; Belokopytov, Yu.A. ; Borovikov, A.A. ; et al.
Sov.J.Nucl.Phys. 34 (1981) 821, 1981.
Inspire Record 165497 DOI 10.17182/hepdata.41255

None

1 data table match query

No description provided.