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Measurement of the forward-backward asymmetry of $\Lambda$ and $\bar{\Lambda}$ production in $p \bar{p}$ collisions

The D0 collaboration Abazov, Victor Mukhamedovich ; Abbott, Braden Keim ; Acharya, Bannanje Sripath ; et al.
Phys.Rev. D93 (2016) 032002, 2016.
Inspire Record 1404885 DOI 10.17182/hepdata.76972

We study $\Lambda$ and $\bar{\Lambda}$ production asymmetries in $p \bar{p} \rightarrow \Lambda (\bar{\Lambda}) X$, $p \bar{p} \rightarrow J/\psi \Lambda (\bar{\Lambda}) X$, and $p \bar{p} \rightarrow \mu^\pm \Lambda (\bar{\Lambda}) X$ events recorded by the D0 detector at the Fermilab Tevatron collider at $\sqrt{s} = 1.96$ TeV. We find an excess of $\Lambda$'s ($\bar{\Lambda}$'s) produced in the proton (antiproton) direction. This forward-backward asymmetry is measured as a function of rapidity. We confirm that the $\bar{\Lambda}/\Lambda$ production ratio, measured by several experiments with various targets and a wide range of energies, is a universal function of "rapidity loss", i.e., the rapidity difference of the beam proton and the lambda.

2 data tables

Forward-backward asymmetry $A_{FB}$ of $\Lambda$ and $\bar{\Lambda}$ with $p_T > 2.0$ GeV in minimum bias events $p \bar{p} \rightarrow \Lambda (\bar{\Lambda}) X$, events $p \bar{p} \rightarrow J/\psi \Lambda (\bar{\Lambda}) X$, and events $p \bar{p} \rightarrow \mu^\pm \Lambda (\bar{\Lambda}) X$.

Forward-backward asymmetry $A_{FB}$ of $\Lambda$ and $\bar{\Lambda}$ in bins of $p_T$ in events $p \bar{p} \rightarrow \mu^\pm \Lambda (\bar{\Lambda}) X$.


Production of $K_S^0, K^{*\pm}(892)$ and $\phi^0(1020)$ in minimum bias events and $K_S^0$ and $\Lambda^0$ in jets in $p\bar p$ collisions at $\sqrt s=1.96  TeV$

The CDF collaboration Aaltonen, T. ; Albrow, M. ; Alvarez Gonzalez, B. ; et al.
Phys.Rev. D88 (2013) 092005, 2013.
Inspire Record 1247975 DOI 10.17182/hepdata.64398

We report measurements of the inclusive transverse momentum pT distribution of centrally produced kshort, kstar(892), and phi(1020) mesons up to pT = 10 GeV/c in minimum-bias events, and kshort and lambda particles up to pT = 20 GeV/c in jets with transverse energy between 25 GeV and 160 GeV in pbar p collisions. The data were taken with the CDF II detector at the Fermilab Tevatron at sqrt(s) = 1.96 TeV. We find that as pT increases, the pT slopes of the three mesons (kshort, kstar, and phi) are similar, and the ratio of lambda to kshort as a function of pT in minimum-bias events becomes similar to the fairly constant ratio in jets at pT ~ 5 GeV/c. This suggests that the particles with pT >~ 5 GeV/c in minimum-bias events are from soft jets, and that the pT slope of particles in jets is insensitive to light quark flavor (u, d, or s) and to the number of valence quarks. We also find that for pT <~ 4 GeV relatively more lambda baryons are produced in minimum-bias events than in jets.

5 data tables

The inclusive invariant differential cross section for K0S production.

The inclusive invariant differential cross section for PHI production.

The inclusive invariant differential cross section for K*(892)+- production.

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Production of $\Lambda$, $\bar{\Lambda}^0$ $\Xi^{\pm}$ and $\Omega^{\pm}$ Hyperons in $p \bar{p}$ Collisions at $\sqrt{s} = 1.96$ TeV

The CDF collaboration Aaltonen, T. ; Alvarez Gonzalez, B. ; Amerio, S. ; et al.
Phys.Rev. D86 (2012) 012002, 2012.
Inspire Record 884451 DOI 10.17182/hepdata.63825
5 data tables

The PT differential cross section for LAMBBA production in the |pseudorapidity| range < 1.

The PT differential cross section for XI- production in the |pseudorapidity| range < 1.

The PT differential cross section for OMEGA- production in the |pseudorapidity| range < 1.

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Inclusive production of strange particles $p \bar{p}$ collisions at $\sqrt{s}$ = 630-GeV with UA1

Bocquet, G. ; Norton, A. ; Wang, H.Q. ; et al.
Phys.Lett. B366 (1996) 441-446, 1996.
Inspire Record 403648 DOI 10.17182/hepdata.48059
8 data tables

No description provided.

K0S Distribution parametrised in the form E*D3SIG/DP**3 = A / (1+ pT/pT0)**N. Best fit values for A, pT0 and N are given here.

No description provided.

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A Study of particle ratios and strangeness suppression in $p \bar{p}$ collisions at $\sqrt{s}$ = 630-GeV with UA1

Bocquet, G. ; Norton, A. ; Wang, H.Q. ; et al.
Phys.Lett. B366 (1996) 447-450, 1996.
Inspire Record 403647 DOI 10.17182/hepdata.48043
2 data tables

Extrapolation to pt=0.

CONST is strangeness suppression factor, extracted from KS/PI+- ratio (see text).


Results from E735 at the tevatron $p\bar{p}$ collider with $\sqrt{s}$ = 1.8-TeV

The E735 collaboration Lindsey, Clark S. ; Alexopoulos, T. ; Allen, C. ; et al.
Nucl.Phys. A544 (1992) 343-356, 1992.
Inspire Record 322633 DOI 10.17182/hepdata.43062
1 data table

No description provided.


Production of neutral strange particles in p Ar, p Xe and anti-p Xe collisions at 200-GeV

Derado, I. ; Kadija, K. ; Malecki, M. ; et al.
Z.Phys. C50 (1991) 31-36, 1991.
Inspire Record 28958 DOI 10.17182/hepdata.15007
23 data tables

No description provided.

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Hyperon Production at 200-{GeV} and 900-{GeV} Center-of-mass Energy

The UA5 collaboration Ansorge, R.E. ; Asman, B. ; Burow, L. ; et al.
Nucl.Phys. B328 (1989) 36-58, 1989.
Inspire Record 277298 DOI 10.17182/hepdata.33174
9 data tables

Corrected lambda transverse momentum distributions. Numerical values supplied by F. Lotse. Data at 546 GeV are taken from an earlier publication - Phys. Rep. 154 (87) 247.

Data at 546 GeV are taken from an earlier publication - Phys. Rep. 154 (87) 247.

Corrected lambda transverse momentum distributions. Numerical values supplied by F. Lotse. Data at 546 GeV are taken from an earlier publication - Phys. Rep. 154 (87) 247.

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Lambda0 and anti-Lambda0 Production from Proton - anti-Proton Collisions at s**(1/2) = 1.8-TeV

The E735 collaboration Banerjee, S. ; Beery, P.D. ; Biswas, N.N. ; et al.
Phys.Rev.Lett. 62 (1989) 12, 1989.
Inspire Record 24875 DOI 10.17182/hepdata.20125

The transverse-momentum spectra of lambdas (Λ0, Λ¯0) produced in the central region has been measured in p¯p collisions at s=1.8 TeV at the Fermilab Collider. We find that the average transverse momentum of the lambdas increases more rapidly with center-of-mass energy than that of charged particles, and the ratio of lambdas to charged particles increases as a function of center-of-mass energy.

4 data tables

No description provided.

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INCLUSIVE K0(S) LAMBDA AND anti-LAMBDA PRODUCTION IN anti-p p INTERACTIONS AT 22.4-GeV/c

The Alma Ata-Dubna-Helsinki-Moscow-Prague-Tbilisi collaboration Batyunya, B.V. ; Boguslavsky, I.V. ; Gramenitsky, I.M. ; et al.
Z.Phys. C25 (1984) 213, 1984.
Inspire Record 194651 DOI 10.17182/hepdata.2004
4 data tables

No description provided.

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One Particle Inclusive and Semiinclusive Spectra of $\Lambda$ Hyperons in $\bar{P} P$ Interactions at 32-{GeV}/c. (In Russian)

Bogolyubsky, M.Yu. ; Vinitsky, A.A. ; Ermolov, P.F. ; et al.
Yad.Fiz. 43 (1986) 1199-1210, 1986.
Inspire Record 238225 DOI 10.17182/hepdata.17515
1 data table

No description provided.


Bose-Fermi U(6/2J+1) Supersymmetries And High-Spin Anomalies

Morrison, I. ; Jarvis, Peter D. ;
Nucl.Phys. A435 (1985) 461-476, 1985.
Inspire Record 212932 DOI 10.17182/hepdata.17659

A supersymmetric extension of the interacting boson model (IBM) is constructed to describe high-spin anomalies in both even- and odd-mass spectra of the Hg, Pt region (190 ⩽ A ⩽ 200). Supergroup chains such as U ( 6 2j + 1 ) ⊃ Osp ( 6 2j + 1 ) ⊃ O (6) × Sp ( 6 2j + 1 )… U ( 6 2j + 1 ) ⊃ U ( 5 2j + 1 ) ⊃ Osp ( 5 2j + 1 )… incorporate a single j -shell fermion in addition to the usual “s” and “d” bosons ( L = 0 and L = 2). The orthosympletic supergroup reflects the strong pairing force in the subspace of the fermion intruder level. The model agrees favourably with experiment and microscopic calculation.

1 data table

No description provided.


DETERMINATION OF CROSS-SECTIONS OF STRANGE PARTICLE PRODUCTION CHANNELS IN ANTI-P P INTERACTIONS AT 32-GeV/c. (IN RUSSIAN)

Bogolyubsky, M.Yu. ; Boos, E.G. ; Borovikov, A.A. ; et al.
Yad.Fiz. 39 (1984) 1436-1447, 1984.
Inspire Record 209441 DOI 10.17182/hepdata.17683
1 data table

No description provided.


A formation study of n anti-n interactions between 1.09 and 3.45 gev/c. ii. strange particles

Oh, B.Y. ; Eastman, P.S. ; Ming, Ma.Z. ; et al.
Nucl.Phys. B51 (1973) 57-76, 1973.
Inspire Record 84294 DOI 10.17182/hepdata.8011
6 data tables

No description provided.

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Study of anti-p p ---> lambda(sigma0) anything at 5.7 gev/c

Ganguli, S.N. ; Sadoulet, B. ;
Nucl.Phys. B53 (1973) 458-472, 1973.
Inspire Record 84214 DOI 10.17182/hepdata.32591

We present a study of the incclusive reaction p p → Λ/Σ 0 + anything at 5.7 GeV/ c based on 9544 events. The main experimental feature is a flattening of the momentum-transfer distribution with the increasing missing mass. We attempt to interpret the results in the framework of the triple-Regge limit. The effective trajectory is shown to be in good agreement, within theoretical uncertainties, with what is expected from K or K ∗ – K ∗∗ exchanges.

1 data table

No description provided.


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CROSS-SECTIONS, AVERAGE MULTIPLICITIES AND ENERGY FRACTIONS OF NEUTRAL pi- AND K MESONS IN anti-p p ANNIHILATIONS AT 22.4-GeV/c

Batyunya, B.V. ; Boguslavsky, I.V. ; Gramenitsky, I.M. ; et al.
Conference Paper, 1982.
Inspire Record 179204 DOI 10.17182/hepdata.17656
7 data tables

No description provided.

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GENERAL FEATURES OF ANTI-P P INTERACTIONS AT 7.3-GEV/C

Patel, G.D. ; Johnson, P. ; Mason, P. ; et al.
Z.Phys. C12 (1982) 189-202, 1982.
Inspire Record 179888 DOI 10.17182/hepdata.2239
26 data tables

No description provided.

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ANNIHILATION AND NON-ANNIHILATION TOPOLOGICAL CROSS SECTIONS.

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CROSS-SECTIONS FOR EXCLUSIVE CHANNELS IN anti-p p REACTIONS AT 12-GeV/c

The Brussels-CERN-London-Mons-Orsay collaboration Casali, R. ; Apostolakis, A. ; Caso, C. ; et al.
Z.Phys. C11 (1982) 273, 1982.
Inspire Record 167028 DOI 10.17182/hepdata.16434

The data obtained in an exposure of BEBC to an r.f. separated beam of antiprotons at 12 GeV/c are used to derive exclusive cross sections for reactions having one or more neutral strange particles in the final state. Particular attention is given to the estimation of the background. An upper limit of the cross section for the inclusive production of the charmed mesonD* is also given.

2 data tables

No description provided.

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Inclusive Production of $K^0_S$, $\Lambda$ and $\bar{\Lambda}$ in $\bar{p} p$ Interactions at 3.6-{GeV}/$c$

Banerjee, S. ; Ganguli, S.N. ; Malhotra, P.K. ; et al.
Nucl.Phys. B150 (1979) 119-140, 1979.
Inspire Record 131498 DOI 10.17182/hepdata.34804
3 data tables

No description provided.

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OTHER DATA AT PLAB=5.7 AND 12. GEV/C. ALSO INCLUDED.


Inclusive V0 Production in anti-p p Interactions at 12-GeV/c

The Brussels-CERN-London-Mons-Orsay collaboration Bertrand, D. ; Johnson, D. ; Lemonne, J. ; et al.
Nucl.Phys. B128 (1977) 365, 1977.
Inspire Record 120622 DOI 10.17182/hepdata.36137
6 data tables

No description provided.

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Comparison of Neutral Particle Production in 100-GeV/c anti-p p and p p Interactions.

Ward, D.R. ; Ansorge, R.E. ; Bust, C.P. ; et al.
Phys.Lett. B62 (1976) 237-240, 1976.
Inspire Record 112616 DOI 10.17182/hepdata.5528
3 data tables

No description provided.

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Neutral Particle Production in 100-GeV/c anti-p p Interactions

Raja, R. ; Moore, Craig D. ; Voyvodic, L. ; et al.
Phys.Rev. D15 (1977) 627, 1977.
Inspire Record 110399 DOI 10.17182/hepdata.24539
9 data tables

No description provided.

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