Charged hadron composition of the final state ine + e − annihilation at high energies

Althoff, Matthias; Brandelik, R.; Braunschweig, W.; Gather, K.; Kirschfink, F. J.; Lübelsmeyer, K.; Martyn, H. U.; Peise, G.; Rimkus, J.; Sander, H. G.; Schmitz, D.; Siebke, H.; Trines, D.; Wallraff, W.; Boerner, H.; Fischer, H. M.; Hartmann, H.; Hilger, E.; Hillen, W.; Knop, G.; Köpke, L.; Kolanoski, H.; Kück, H.; Wedemeyer, R.; Wermes, N.; Wollstadt, M.; Burkhardt, Hugh; Cooper, S.; Franzke, J.; Hultschig, H.; Joos, P.; Koch, W.; Kötz, U.; Kowalski, H.; Ladage, A.; Löhr, B.; Lüke, D.; Mättig, P.; Mess, K. H.; Notz, D.; Pyrlik, J.; Quarrie, D. R.; Riethmüller, R.; Schütte, W.; Söding, P.; Wolf, G.; Yekutieli, G.; Fohrmann, R.; Krasemann, H. L.; Leu, P.; Lohrmann, E.; Pandoulas, D.; Poelz, G.; Römer, O.; Schmüser, Peter; Wiik, B. H.; Al-Agil, I.; Beuselinck, R.; Binnie, D. M.; Campbell, A. J.; Dornan, P. J.; Garbutt, D. A.; Jones, T. D.; Jones, W. G.; Lloyd, S. L.; McCardle, J.; Sedgebeer, J. K.; Bell, K. W.; Bowler, M. G.; Brock, I. C.; Cashmore, R. J.; Carnegie, R. K.; Clarke, P. E.L.; Devenish, R. C. E.; Grossmann, P.; Illingworth, J.; Salmon, G.L.; Thomas, J. P.; Wyatt, T. R.; Youngman, C.; Foster, B.; Hart, J. C.; Harvey, J.; Proudfoot, J.; Saxon, D. H.; Woodworth, P.L.; Heyland, D.; Holder, M.; Duchovni, E.; Eisenberg, Y.; Karshon, U.; Mikenberg, G.; Revel, D.; Ronat, E.; Shapira, A.; Barklow, T.; Freeman, J.; Lecomte, P.; Meyer, T.; Rudolph, G.; Venkataramania, H.; Wicklund, E.; Wu, S. L.; Zobernig, G.

doi:10.1007/bf01577813

Cited by 85 publications

(11 citation statements)

References 48 publications

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“…Many such measurements have been performed for light hadrons at a range of CMS energies at the B factories [1,2] at LEP and SLC [3][4][5][6] and other facilities [7][8][9][10][11][12][13][14][15][16]. The different energy scales can be related via DGLAP evolution [17].…”

mentioning

confidence: 99%

Inclusive cross sections for pairs of identified light charged hadrons and for single protons ine+e−ats=10.58
Seidl¹,
Abdesselam²,
Adachi³
et al. 2015
Phys. Rev. D
16
4
31
0
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We report the first double differential cross sections of two charged pions and kaons (e + e − → hhX) in electron-positron annihilation as a function of the fractional energies of the two hadrons for any charge and hadron combination. The dependence of these di-hadron cross sections on the topology (same, opposite-hemisphere or anywhere) is also studied with the help of the event shape variable thrust and its axis. The ratios of these di-hadron cross sections for different charges and hadron combinations directly shed light on the contributing fragmentation functions. For example, we find that the ratio of same-sign pion pairs over opposite-sign pion pairs drops toward higher fractional energies where disfavored fragmentation is expected to be suppressed. These di-hadron results are obtained from a 655 fb −1 data sample collected near the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e + e − collider. Extending the previously published single-pion and single-kaon cross sections, single-proton (e + e − → pX) cross sections are extracted from a 159 fb −1 data sub-sample.

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mentioning

confidence: 99%

Inclusive cross sections for pairs of identified light charged hadrons and for single protons ine+e−ats=10.58
Seidl¹,
Abdesselam²,
Adachi³
et al. 2015
Phys. Rev. D
16
4
31
0
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“…The TASSO collaboration [33] has presented fits to the invariant spectrum with exponential form in E E 4πp 2 dσ dp =…”

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confidence: 99%

Limiting soft particle emission in e + e −, hadronic and nuclear collisions

2010

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In e + e − collisions the particle spectra at low momenta reflect the properties of the underlying "soft" QCD gluon bremsstrahlung: the particle density, in the limit p → 0, becomes independent of the incoming energy √ s and directly proportional to the colour factors C A , C F for primary gluons or quarks respectively. We find that experimental data from the pp and nuclear reactions reveal the same behaviour: in the limit p T → 0 the invariant particle spectra become independent of the collision energy, and their intensities in e + e − , pp and nuclear reactions are compatible with the expected colour factors C F : C A : (N part /2)C A for N part nucleons, participating in the interaction. Coherent soft gluon bremsstrahlung is, therefore, suggested to be the dominant QCD mechanism for the soft particle production in all these reactions. These "soft" particles probe the very early stage of hadron formation in the collision. Future measurements at the LHC will provide crucial tests on the contributions from possible incoherent multi-component processes.

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“…One of its great merits is that it treats the baryon and meson production in an uniform scheme, so it describes the baryon production naturally. However, for a long period QCM is regarded as being ruled out, because the prediction for baryon-antibaryon (BB) rapidity correlation in e + e − annihilation by Cerny's Monte Carlo Program, which was alleged to be based on QCM, has great discrepancies with the experimental results of TASSO collaboration [12]. But early in 1987, the BB phase space correlation from the naive QCM scheme was analyzed, which showed that there should not be such an inconsistency qualitatively.…”

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confidence: 98%

An investigation of hadronization mechanism at a Z 0 factory

Jin

Xie

et al. 2010

Sci. China Phys. Mech. Astron.

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We briefly review the hadronization pictures adopted in the LUND String Fragmentation Model (LSFM), Webber Cluster Fragmentation Model (WCFM) and Quark Combination Model (QCM), respectively. Predictions of hadron multiplicity, baryon to meson ratios and baryon-antibaryon flavor correlations, especially those related to heavy hadrons at a Z 0 factory obtained by LSFM and QCM, are reported. Z 0 factory, hadronization model, baryon to meson ratio, BB correlation PACS: 12.15.Ji, 13.38.Dg, 24.10.Lx

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Charged hadron composition of the final state ine + e − annihilation at high energies

Abstract: On average an event at W = 34 GeV contains 10.3! 0.4 TI-, 2.0! 0.2 Kand 0.8! 0.1 p,p. In addition, we present results on baryon correlations using a sample of events where two or more protons and/or antiprotons are observed in the final state. 0.15.

Cited by 85 publications

References 48 publications

Inclusive cross sections for pairs of identified light charged hadrons and for single protons ine+e−ats=10.58
Seidl¹,
Abdesselam²,
Adachi³
et al. 2015
Phys. Rev. D
16
4
31
0
View full text Add to dashboard Cite

Inclusive cross sections for pairs of identified light charged hadrons and for single protons ine+e−ats=10.58
Seidl¹,
Abdesselam²,
Adachi³
et al. 2015
Phys. Rev. D
16
4
31
0
View full text Add to dashboard Cite

Limiting soft particle emission in e + e −, hadronic and nuclear collisions

An investigation of hadronization mechanism at a Z 0 factory

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Charged hadron composition of the final state ine + e − annihilation at high energies

Abstract: On average an event at W = 34 GeV contains 10.3! 0.4 TI-, 2.0! 0.2 Kand 0.8! 0.1 p,p. In addition, we present results on baryon correlations using a sample of events where two or more protons and/or antiprotons are observed in the final state. 0.15.

Cited by 85 publications

References 48 publications

Inclusive cross sections for pairs of identified light charged hadrons and for single protons ine+e−ats=10.58 Seidl1, Abdesselam2, Adachi3 et al. 2015Phys. Rev. D164310View full textAdd to dashboardCite

Inclusive cross sections for pairs of identified light charged hadrons and for single protons ine+e−ats=10.58 Seidl1, Abdesselam2, Adachi3 et al. 2015Phys. Rev. D164310View full textAdd to dashboardCite

Limiting soft particle emission in e + e −, hadronic and nuclear collisions

An investigation of hadronization mechanism at a Z 0 factory

Contact Info

Product

Resources

About

Inclusive cross sections for pairs of identified light charged hadrons and for single protons ine+e−ats=10.58
Seidl¹,
Abdesselam²,
Adachi³
et al. 2015
Phys. Rev. D
16
4
31
0
View full text Add to dashboard Cite

Inclusive cross sections for pairs of identified light charged hadrons and for single protons ine+e−ats=10.58
Seidl¹,
Abdesselam²,
Adachi³
et al. 2015
Phys. Rev. D
16
4
31
0
View full text Add to dashboard Cite