Ks0 and Λ production in quark and gluon jets at LEP

Acciarri, M.; Adriani, O.; Aguilar-Benı́tez, M.; Ahlen, S. P.; Alcaraz, J.; Alemanni, G.; Allaby, J.; Aloisio, A.; Alverson, G.; Alviggi, M. G.; Ambrosi, G.; Anderhub, H.; Andreev, V.; Angelescu, T.; Anselmo, F.; Arefiev, A.; Azemoon, T.; Aziz, T.; Bagnaia, P.; Baksay, L.; Ball, R. C.; Banerjee, S.; Banicz, K.; Barczyk, A.; Barillère, R.; Barone, L.; Bartalini, P.; Basçhirotto, A.; Basile, M.; Battiston, R.; Bay, A.; Becattini, F.; Becker, U.; Behner, F.; Berdugo, J.; Berges, P.; Bertucci, B.; Betev, B. L.; Bhattacharya, S.; Biasini, M.; Biland, A.; Bilei, G. M.; Blaising, J. J.; Blyth, S.; Bobbink, G. J.; Böck, R.; Böhm, A.; Boldizsár, L.; Borgia, B.; Boucham, A.; Bourilkov, D.; Bourquin, M.; Boutigny, D.; Braccini, S.; Branson, J. G.; Brigljević, V.; Brock, I. C.; Buffini, A.; Buijs, A.; Burger, J. D.; Burger, W. J.; Busenitz, J.; Cai, X.; Campanelli, M.; Capell, M.; Romeo, Giovanni; Carlino, G.; Cartacci, A. M.; Casaus, J.; Castellini, G.; Cavallari, F.; Cavallo, N.; Cecchi, C.; Cerrada, M.; Cesaroni, F.; Chamizo, M.; Chang, Y. H.; Chaturvedi, U. K.; Chekanov, S.; Chemarin, M.; Chen, A; Chen, G; Chen, G.M; Chen, H.F; Chen, H.S; Chen, M; Chiefari, G.; Chien, C. Y.; Cifarelli, L.; Cindolo, F.; Civinini, C.; Clare, I.; Clare, R.; Cohn, H. O.; Coignet, G.; Colijn, A. P.; Colino, N.; Commichau, V.; Costantini, S.; Cotorobai, F.; Cruz, B. De La; Csilling, Á.; Dai, T.; D’Alessandro, R.; Asmundis, R. de; Degré, A.; Deiters, K.; Denes, P.; DeNotaristefani, F.; DiBitonto, D.; Diemoz, M.; Dierendonck, D. van; Lodovico, F. Di; Dionisi, C.; Dittmar, M.; Dominguez, A.; Doria, A.; Dorne, I.; Dova, M. T.; Gerald, J.; Gheordanescu, N.; Giagu, S.; Goldfarb, S.; Goldstein, J.; Gong, Z. F.; Gougas, A.; Gratta, G.; Gruenewald, M. W.; Gupta, Virendra K.; Gurtu, A.; Gutay, L.; Hartmann, B.; Hasan, A.; Hatzifotiadou, D.; Hebbeker, T.; Hervé, A.; Hoek, W. C. van; Hofer, H.; Hong, S. J.; Hoorani, H. R.; Hou, S.; Hu, G.; Innocente, V.; Janßen, H.; Jenkes, K.; Jin, B. N.; Jones, L. W.; Jong, P. de; Josa-Mutuberria, I.; Kasser, A.; Khan, R. A.; Kamrad, D.; Kamyshkov, Yu.; Kapustinsky, J.; Karyotakis, Y.; Kaur, M.; Kienzle‐Focacci, M. N.; Kim, D; Kim, D.H; Kim, J.K; Kim, S.C; Kim, Y.G; Kinnison, W. W.; Kirkby, A.; Kirkby, D.; Kirkby, J.; Kiss, D.; Kittel, W.; Klimentov, A.; König, A. C.; Kopp, A. K.; Korolko, I.; Koutsenko, V.; Kraemer, R. W.; Krenz, W.; Kunin, A.; Guevara, P. Ladrón de; Landi, G.; Lapoint, C.; Lassila-Perini, K.; Laurikainen, P.; Lebeau, M.; Lebedev, A.; Lebrun, P.; Lecomte, P.; Lecoq, P.; Coultre, P. Le; Leggett, C.; Goff, J. M. Le; Leiste, R.; Leonardi, E.; Levtchenko, P.; Li, C; Lin, C.; Lin, W.; Linde, F.; Lista, L.; Liu, Z.A; Lohmann, W.; Longo, E.; Lu, W.; Lu, Y. S.; Lübelsmeyer, K.; Luci, C.; Luckey, D.; Luminari, L.; Lustermann, W.; Wen-Gan, Ma; Maity, M.; Majumder, G.; Malgeri, L.; Малинин, А.; Mañá, C.; Mangeol, D.; Mangla, Sachin Kumar; Marchesini, P.; Marı́n, A.; Martin, J. P.; Marzano, F.; Massaro, G.; McNally, D.; Mele, S.; Merola, L.; Meschini, M.; Metzger, W. J.; Mey, M. von der; Mei, Yong; Mihul, A.; Mil, A. J.W. van; Mirabelli, G.; Mnich, J.; Molnár, Péter; Monteleoni, B.; Moore, R.; Morganti, S.; Moulik, T.; Mount, R.; Müller, S.; Muheim, F.; Muijs, A. J.M.; Nahn, S.; Napolitano, M.; Nessi‐Tedaldi, F.; Newman, H. B.; Nießen, T.; Nippe, A.; Nisati, A.; Nowak, H.; Oh, Y. D.; Opitz, Herwart; Organtini, G.; Ostonen, R.; Palomares, C.; Pandoulas, D.; Paoletti, S.; Paolucci, P.; Park, H.K; Park, I.H; Pascale, Gennaro De; Passaleva, G.; Patricelli, S.; Paul, T.; Pauluzzi, M.; Paus, C.; Pauß, F.; Peach, D.; Pei, Y. J.; Pensotti, S.; Perret-Gallix, D.; Petersen, B. A.; Petrak, S.; Pevsner, A.; Piccolo, D.; Pieri, M.; Pinto, J. C.; Piroué, P.; Pistolesi, E.; Plyaskin, V.; Pohl, M.; Pojidaev, V.; Postema, H.; Produit, N.; Prokofiev, D.; Rahal-Callot, G.; Raja, N.; Rancoita, P.G.; Rattaggi, M.; Raven, G.; Razis, P. A.; Read, K. F.; Ren, D.; Rescigno, M.; Reucroft, S.; Rhee, T. van; Riemann, S.; Riles, K.; Rind, O.; Robohm, A.; Rodin, J.; Roe, B. P.; Romero, L.; Rosier‐Lees, S.; Rosselet, Ph.; Rossum, W. van; Roth, Stefan; Rubio, J. A.; Ruschmeier, D.; Rykaczewski, H.; Salicio, J.; Sánchez, E.; Sanders, M. P.; Sarakinos, M. E.; Sarkar, S.; Sassowsky, M.; Sauvage, G.; Schäfer, C.; Schegelsky, V. A.; Schmidt-Kaerst, S.; Schmitz, D.; Schmitz, P.; Schneegans, M.; Scholz, N.; Schopper, H.; Schotanus, D. J.; Schwenke, J.; Schwering, G.; Sciacca, C.; Sciarrino, D.; Servoli, L.; Shevchenko, S.; Shivarov, N.; Shoutko, V.; Shukla, J.; Shumilov, E.; Shvorob, A.; Siedenburg, T.; Son, D.; Sopczak, A.; Soulimov, V.; Smith, Bryan; Спиллантини, П.; Steuer, M.; Stickland, D.; Stone, Howard A.; Stoyanov, B.; Straessner, A.; Strauch, K.; Sudhakar, K.; Sultanov, G.; Sun, L. Z.; Susinno, G.; Suter, H.; Swain, J. D.; Tang, X. W.; Tauscher, L.; Taylor, L.; Ting, Samuel C.C.; Ting, S. M.; Tonutti, M.; Tonwar, S. C.; Töth, J.; Tully, C.; Tuchscherer, H.; Tung, K. L.; Uchida, Y.; Ulbricht, J.; Uwer, U.; Valente, E.; Walle, R. T. Van de; Vesztergombi, G.; Vetlitsky, I.; Viertel, G.; Vivargent, M.; Völkert, R.; Vogel, H.; Vogt, H.; Vorobiev, I.; Vorobyov, A. A.; Vorvolakos, A.; Wadhwa, M.; Wallraff, W.; Wang, J.C; Wang, X.L; Wang, Z.M; Weber, A.; Wittgenstein, F.; Wu, S. X.; Wynhoff, S.; Xu, J.; Xu, Z.; Yang, B. Z.; Yang, C. G.; Yao, Xiaojun; Ye, J.B; Yeh, S.C.; You, J. M.; Zalite, A.; Zalite, Yu.; Zemp, P.; Zeng, Y.; Zhang, Z; Zhang, Z.P; Zhou, B.; Zhou, Y.; Zhu, G. Y.; Zhu, R. Y.; Zichichi, A.; Ziegler, F.

doi:10.1016/s0370-2693(97)00864-2

Cited by 18 publications

(4 citation statements)

References 18 publications

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“…The tabulated data [34][35][36][37][38][39][40][41] were fitted to Gaussian functions in the interval 1.2 < ξ < 4.2. The situation for the protons is not satisfactory, the fitted maxima of the ξ distributions varying from 2.79 [35,36] to 3.08 [41].…”

Section: Observablesmentioning

confidence: 99%

Σ−-antihyperon correlations in Z0 decay and investigation of the baryon production mechanism

et al. 2009

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Data collected around √ s = 91 GeV by the OPAL experiment at the LEP e + e − collider are used to study the mechanism of baryon formation. As the signature, the fraction of − hyperons whose baryon number is compensated by the production of a − , or − antihyperon is determined. The method relies entirely on quantum number correlations of the baryons, and not rapidity correlations, making it more model independent than previous studies. Within the context of the JETSET implementation of the string hadronization model, the diquark baryon production model without the popcorn mechanism is strongly disfavored with a significance of 3.8 standard deviations including systematic uncertainties. It is shown that previous studies of the popcorn mechanism with and pπp cora

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Section: Observablesmentioning

confidence: 99%

Σ−-antihyperon correlations in Z0 decay and investigation of the baryon production mechanism

et al. 2009

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“…DELPHI has measured the relative rates for π ± , K ± and p/p [126]. L3 has studied η [127], K s and Λ 0 [128].…”

Section: Leading Hadron Productionmentioning

confidence: 99%

Hadron Production in Quark, Antiquark, and Gluon Jets from Electron-Positron Interactions at the Z0 Pole

Kang¹

2002

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We present production measurements of the charged hadrons π ± , K ± and p/p in e + e − interactions at the Z 0 pole. The excellent particle identification capability of the SLC Large Detector (SLD) at the Stanford Linear Collider (SLC) are used. In addition to studies over a wide momentum range in hadronic Z 0 events of all five flavors, we have made the most precise measurements in light (uds), c and b flavor events separately. Unambiguous flavor dependencies have been observed, and the results have been compared with the predictions of several QCD fragmentation models. We have also exploited the unique feature of electron beam polarization in our experiment to compare hadron production separately in quark and antiquark jets. Direct evidence that higher momentum hadrons are more likely to contain the primary quark and antiquark is seen, with precision sufficient to provide new model tests. Finally, we have studied hard gluon jets in detail. We have confirmed that gluon jets have a higher multiplicity of softer particles than light quark jets, and found this enhancement to be the same for π ± , K ± and p/p at the few percent level at all momenta. Any overall difference in the hadron fractions is limited to 0.018 at the 95% confidence level, indicating that there are no differences at the hadronization stage in jet formation between gluons and quarks.

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“…(31), q N (x, Q 2 ), the quark distribution of the proton, is adopted as the CTEQ5 set 1 parametrization form [33] in our numerical calculations. As shown in Fig.…”

Section: Spin Transfer To λ In Polarized Charged Lepton Dismentioning

confidence: 99%

“…By fitting the inclusive unpolarized Λ production data in e + e − annihilation, the Fig. 1, we show our fit results compared with the experimental data [26][27][28][29][30][31]. In order to show the flavor and spin structure of the Λ fragmentation functions, the ratios of Fig.…”

mentioning

confidence: 99%