Title: | Measurement of neutral strange particle production in the underlying event in proton-proton collisions at √s=7 TeV |
Authors: | Chatrchyan, S Khachatryan, V Sirunyan, AM Tumasyan, A Adam, W Bergauer, T Dragicevic, M Eroe, J Fabjan, C Friedl, M Fruehwirth, R Castello, R Smirnov, I Sulimov, V Uvarov, L Vavilov, S Vorobyev, A Vorobyev, A Andreev, Y Dermenev, A Gninenko, S Golubev, N Caudron, A Kirsanov, M Krasnikov, N Pashenkov, A Tlisov, D Toropin, A Epshteyn, V Erofeeva, M Gavrilov, V Lychkovskaya, N Popov, V Ceard, L Safronov, G Semenov, S Spiridonov, A Stolin, V Vlasov, E Zhokin, A Andreev, V Azarkin, M Dremin, I Kirakosyan, M Delaere, C Leonidov, A Mesyats, G Rusakov, SV Vinogradov, A Belyaev, A Boos, E Dubinin, M Dudko, L Ershov, A Gribushin, A du Pree, T Klyukhin, V Kodolova, O Lokhtin, I Markina, A Obraztsov, S Petrushanko, S Savrin, V Snigirev, A Azhgirey, I Bayshev, I Favart, D Bitioukov, S Kachanov, V Kalinin, A Konstantinov, D Krychkine, V Petrov, V Ryutin, R Sobol, A Tourtchanovitch, L Troshin, S Forthomme, L Tyurin, N Uzunian, A Volkov, A Adzic, P Ekmedzic, M Krpic, D Milosevic, J Aguilar-Benitez, M Maestre, JA Battilana, C Giammanco, A Calvo, E Cerrada, M Llatas, MC Colino, N De la Cruz, B Peris, AD Vazquez, DD Bedoya, CF Ramos, JPF Ferrando, A Hollar, J Flix, J Fouz, MC Garcia-Abia, P Lopez, OG Lopez, SG Hernandez, JM Josa, MI Merino, G De Martino, EN Pelayo, JP Lemaitre, V Olmeda, AQ Redondo, I Romero, L Santaolalla, J Soares, MS Willmott, C Albajar, C de Troconiz, JF Brun, H Cuevas, J Ghete, VM Liao, J Menendez, JF Folgueras, S Caballero, IG Iglesias, LL Gomez, JP Cifuentes, JAB Cabrillo, IJ Calderon, A Chuang, SH Campderros, JD Militaru, O Fernandez, M Gomez, G Sanchez, JG Graziano, A Jorda, C Virto, AL Marco, J Marco, R Rivero, CM Matorras, F Nuttens, C Sanchez, FJM Rodrigo, T Rodriguez-Marrero, AY Ruiz-Jimeno, A Scodellaro, L Vila, I Cortabitarte, RV Abbaneo, D Auffray, E Auzinger, G Pagano, D Bachtis, M Baillon, P Ball, AH Barney, D Bendavid, J Benitez, JF Bernet, C Bianchi, G Bloch, P Bocci, A Pin, A Bonato, A Bondu, O Botta, C Breuker, H Camporesi, T Cerminara, G Christiansen, T Perez, JAC Colafranceschi, S d'Enterria, D Piotrzkowski, K Dabrowski, A De Roeck, A De Visscher, S Di Guida, S Dobson, M Dupont-Sagorin, N Elliott-Peisert, A Eugster, J Funk, W Georgiou, G Popov, A Giffels, M Gigi, D Gill, K Giordano, D Girone, M Giunta, M Glege, F Garrido, RG-R Gowdy, S Guida, R Selvaggi, M Hammer, J Hansen, M Harris, P Hartl, C Hegner, B Hinzmann, A Innocente, V Janot, P Karavakis, E Kousouris, K Garcia, JMV Krajczar, K Lecoq, P Lee, Y-J Lourenco, C Magini, N Malberti, M Malgeri, L Mannelli, M Masetti, L Meijers, F Beliy, N Mersi, S Meschi, E Moser, R Mulders, M Musella, P Nesvold, E Orsini, L Cortezon, EP Perez, E Perrozzi, L Hoermann, N Caebergs, T Petrilli, A Pfeiffer, A Pierini, M Pimiae, M Piparo, D Plagge, M Polese, G Quertenmont, L Racz, A Reece, W Daubie, E Rolandi, G Rovelli, C Rovere, M Sakulin, H Santanastasio, F Schaefer, C Schwick, C Segoni, I Sekmen, S Sharma, A Hammad, GH Siegrist, P Silva, P Simon, M Sphicas, P Spiga, D Stoye, M Tsirou, A Veres, GI Vlimant, JR Woehri, HK Alves, GA Worm, SD Zeuner, WD Bertl, W Deiters, K Erdmann, W Gabathuler, K Horisberger, R Ingram, Q Kaestli, HC Koenig, S Martins, MCJ Kotlinski, D Langenegger, U Renker, D Rohe, T Bachmair, F Baeni, L Bortignon, P Buchmann, MA Casal, B Chanon, N Martins, T Deisher, A Dissertori, G Dittmar, M Donega, M Duenser, M Eller, P Freudenreich, K Grab, C Hits, D Lecomte, P Pol, ME Lustermann, W Marini, AC del Arbol, PMR Mohr, N Moortgat, F Naegeli, C Nef, P Nessi-Tedaldi, F Pandolfi, F Pape, L Souza, MHG Pauss, F Peruzzi, M Ronga, FJ Rossini, M Sala, L Sanchez, AK Starodumov, A Stieger, B Takahashi, M Tauscher, L Alda, WLJ Thea, A Theofilatos, K Treille, D Urscheler, C Wallny, R Weber, HA Amsler, C Chiochia, V Favaro, C Rikova, MI Carvalho, W Kilminster, B Mejias, BM Otiougova, P Robmann, P Snoek, H Taroni, S Tupputi, S Verzetti, M Cardaci, M Chen, KH Hrubec, J Chinellato, J Ferro, C Kuo, CM Li, SW Lin, W Lu, YJ Volpe, R Yu, SS Bartalini, P 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Nirunpong, K Poll, A Senkin, S Smith, VJ Williams, T Basso, L Bell, KW Belyaev, A Brew, C Brown, RM Jeitler, M Nogima, H Cockerill, DJA Coughlan, JA Harder, K Harper, S Jackson, J Olaiya, E Petyt, D Radburn-Smith, BC Shepherd-Themistocleous, CH Tomalin, IR Prado Da Silva, WL Womersley, WJ Bainbridge, R Buchmuller, O Burton, D Colling, D Cripps, N Cutajar, M Dauncey, P Davies, G Della Negra, M Santoro, A Ferguson, W Fulcher, J Futyan, D Gilbert, A Bryer, AG Hall, G Hatherell, Z Hays, J Iles, G Jarvis, M Soares Jorge, L Karapostoli, G Kenzie, M Lane, R Lucas, R Lyons, L Magnan, A-M Marrouche, J Mathias, B Nandi, R Nash, J Sznajder, A Nikitenko, A Pela, J Pesaresi, M Petridis, K Pioppi, M Raymond, DM Rogerson, S Rose, A Seez, C Sharp, P Tonelli Manganote, EJ Sparrow, A Tapper, A Acosta, MV Virdee, T Wakefield, S Wardle, N Whyntie, T Chadwick, M Cole, JE Hobson, PR Vilela Pereira, A Khan, A Kyberd, P Leggat, D Leslie, D Martin, W Reid, ID Symonds, P Teodorescu, L Turner, M Dittmann, J Anjos, TS Hatakeyama, K Kasmi, A Liu, H Scarborough, T Charaf, O Cooper, SI Henderson, C Rumerio, P Avetisyan, A Bose, T Bernardes, CA Fantasia, C Heister, A Lawson, P Lazic, D Rohlf, J Sperka, D John, JS Sulak, L Alimena, J Bhattacharya, S Dias, FA Christopher, G Cutts, D Demiragli, Z Ferapontov, A Garabedian, A Heintz, U Kukartsev, G Laird, E Landsberg, G Luk, M Kiesenhofer, W Fernandez Perez Tomei, TR Narain, M Segala, M Sinthuprasith, T Speer, T Breedon, R Breto, G De La Barca Sanchez, MC Chauhan, S Chertok, M Conway, J Gregores, EM Conway, R Cox, PT Erbacher, R Gardner, M Houtz, R Ko, W Kopecky, A Lander, R Mall, O Miceli, T Lagana, C Nelson, R Pellett, D Ricci-Tam, F Rutherford, B Searle, M Smith, J Squires, M Tripathi, M Wilbur, S Yohay, R Marinho, F Andreev, V Cline, D Cousins, R Erhan, S Everaerts, P Farrell, C Felcini, M Hauser, J Ignatenko, M Jarvis, C Mercadante, PG Rakness, G Schlein, P Takasugi, E Traczyk, P Valuev, V Weber, M Babb, J Clare, R Dinardo, ME Ellison, J 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Zaganidis, N Kalinowski, A Konecki, M Krolikowski, J Misiura, M Wolszczak, W Almeida, N Bargassa, P David, A Faccioli, P Parracho, PGF Basegmez, S Gallinaro, M Antunes, JR Seixas, J Varela, J Vischia, P Bunin, P Gavrilenko, M Golutvin, I Gorbunov, I Kamenev, A Beluffi, C Karjavin, V Konoplyanikov, V Kozlov, G Lanev, A Malakhov, A Matveev, V Moisenz, P Palichik, V Perelygin, V Shmatov, S Bruno, G Skatchkov, N Smirnov, V Zarubin, A Evstyukhin, S Golovtsov, V Ivanov, Y Kim, V Levchenko, P Murzin, V Oreshkin, V |
Issue Date: | 2013 |
Publisher: | American Physical Society |
Citation: | Physical Review D , 88(5), 052001, 2013 |
Abstract: | Measurements are presented of the production of primary K0S and Λ particles in proton-proton collisions at √7=TeV in the region transverse to the leading charged-particle jet in each event. The average multiplicity and average scalar transverse momentum sum of K0S and Λ particles measured at pseudorapidities |n|<2 rise with increasing charged-particle jet pT in the range 1–10 GeV=c and saturate in the region 10–50 GeV=c. The rise and saturation of the strange-particle yields and transverse momentum sums in the underlying event are similar to those observed for inclusive charged particles, which confirms the impact-parameter picture of multiple parton interactions. The results are compared to recent tunes of the PYTHIA Monte Carlo event generator. The PYTHIA simulations underestimate the data by 15%–30% for K0S mesons and by about 50% for Λ baryons, a deficit similar to that observed for the inclusive strange-particle production in non-single-diffractive proton-proton collisions. The constant strange- to charged-particle activity ratios with respect to the leading jet pT and similar trends for mesons and baryons indicate that the multiparton-interaction dynamics is decoupled from parton hadronization, which occurs at a later stage. |
Description: | This article is the pre-print version of the final published paper that is available from the link above. |
URI: | http://prd.aps.org/abstract/PRD/v88/i5/e052001 http://bura.brunel.ac.uk/handle/2438/7838 |
DOI: | http://dx.doi.org/10.1103/PhysRevD.88.052001 |
ISSN: | 1550-7998 |
Appears in Collections: | Electronic and Electrical Engineering Dept of Electronic and Electrical Engineering Research Papers
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