Measurement of double parton scattering in (p)over-bar-p collisions at root s=1.8 TeV

Abe, F; Akimoto, H; Akopian, A; Albrow, Mg; Amendolia, Sr; Amidei, D; Antos, J; Aota, S; Apollinari, G; Asakawa, T; Ashmanskas, W; Atac, M; Azfar, F; Azzibacchetta, P; Badgett, W; Bagdasarov, S; Bailey, Mw; Bao, J; Debarbaro, P; Barbarogaltieri, A; Barnes, Ve; Barnett, Ba; Barone, M; Barzi, E; Bauer, G; Baumann, T; Bedeschi, F; Behrends, S; Belforte, S; Bellettini, G; Bellinger, J; Benjamin, D; Benlloch, J; Bensinger, J; Benton, D; Beretvas, A; Berge, Jp; Berryhill, J; Bertolucci, S; Bevensee, B; Bhatti, A; Biery, K; Binkley, M; Bisello, D; Blair, Re; Blocker, C; Bodek, A; Bokhari, W; Bolognesi, V; Bolla, G; Bortoletto, D; Boudreau, J; Breccia, L; Bromberg, C; Bruner, N; Buckleygeer, E; Budd, Hs; Burkett, K; Busetto, G; Byonwagner, A; Byrum, Kl; Cammerata, J; Campagnari, C; Campbell, M; Caner, A; Carithers, W; Carlsmith, D; Castro, A; Cauz, D; Cen, Y; Cervelli, F; Chang, Ps; Chang, Pt; Chao, Hy; Chapman, J; Cheng, Mt; Chiarelli, G; Chikamatsu, T; Chiou, Cn; Christofek, L; Cihangir, S; Clark, Ag; Cobal, M; Cocca, E; Contreras, M; Conway, J; Cooper, J; Cordelli, M; Couyoumtzelis, C; Crane, D; Croninhennessy, D; Culbertson, R; Daniels, T; Dejongh, F; Delchamps, S; Dellagnello, S; Dellorso, M; Demina, R; Demortier, L; Deninno, M; Derwent, Pf; Devlin, T; Dittmann, Jr; Donati, S; Done, J; Dorigo, T; Dunn, A; Eddy, N; Einsweiler, K; Elias, Je; Ely, R; Engels, E; Errede, D; Fan, Q; Feild, G; Ferretti, C; Fiori, I; Flaugher, B; Foster, Gw; Franklin, M; Frautschi, M; Freeman, J; Friedman, J; Frisch, H; Fukui, Y; Funaki, S; Galeotti, S; Gallinaro, M; Ganel, O; Garciasciveres, M; Garfinkel, Af; Gay, C; Geer, S; Gerdes, Dw; Giannetti, P; Giokaris, N; Giromini, P; Giusti, G; Gladney, L; Glenzinski, D; Gold, M; Gonzalez, J; Gordon, A; Goshaw, At; Gotra, Y; Goulianos, K; Grassmann, H; Groer, L; Grossopilcher, C; Guillian, G; Guo, Rs; Haber, C; Hafen, E; Hahn, Sr; Hamilton, R; Handler, R; Hans, Rm; Happacher, F; Hara, K; Hardman, Ad; Harral, B; Harris, Rm; Hauger, Sa; Hauser, J; Hawk, C; Hayashi, E; Heinrich, J; Hinrichsen, B; Hoffman, Kd; Hohlmann, M; Holck, C; Hollebeek, R; Holloway, L; Hong, S; Houk, G; Hu, P; Huffman, Bt; Hughes, R; Huston, J; Huth, J; Hylen, J; Ikeda, H; Incagli, M; Incandela, J; Introzzi, G; Iwai, J; Iwata, Y; Jensen, H; Joshi, U; Kadel, Tw; Kajfasz, E; Kambara, H; Kamon, T; Kaneko, T; Karr, K; Kasha, H; Kato, Y; Keaffaber, Ta; Kelley, K; Kennedy, Rd; Kephart, R; Kesten, P; Kestenbaum, D; Keutelian, H; Keyvan, F; Kharadia, B; Kim, Bj; Kim, Dh; Kim, Hs; Kim, Sb; Kim, Sh; Kim, Yk; Kirsch, L; Koehn, P; Kondo, K; Konigsberg, J; Kopp, S; Kordas, K; Korytov, A; Koska, W; Kovacs, E; Kowald, W; Krasberg, M; Kroll, J; Kruse, M; Kuwabara, T; Kuhlmann, Se; Kuns, E; Laasanen, At; Lami, S; Lammel, S; Lamoureux, Ji; Lancaster, M; Lecompte, T; Leone, S; Lewis, Jd; Limon, P; Lindgren, M; Liss, Tm; Liu, Lb; Liu, Yc; Lockyer, N; Long, O; Loomis, C; Loreti, M; Lu, J; Lucchesi, D; Lukens, P; Lusin, S; Lys, J; Maeshima, K; Maghakian, A; Maksimovic, P; Mangano, M; Mansour, J; Mariotti, M; Marriner, Jp; Martin, A; Matthews, Jaj; Mattingly, R; Mcintyre, P; Melese, P; Menzione, A; Meschi, E; Metzler, S; Miao, C; Miao, T; Michail, G; Miller, R; Minato, H; Miscetti, S; Mishina, M; Mitsushio, H; Miyamoto, T; Miyashita, S; Moggi, N; Morita, Y; Mukherjee, A; Muller, T; Murat, P; Nakada, H; Nakano, I; Nelson, C; Neuberger, D; Newmanholmes, C; Ngan, Cyp; Ninomiya, M; Nodulman, L; Oh, Sh; Ohl, Ke; Ohmoto, T; Ohsugi, T; Oishi, R; Okabe, M; Okusawa, T; Oliveira, R; Olsen, J; Pagliarone, C; Paoletti, R; Papadimitriou, V; Pappas, Sp; Parashar, N; Park, S; Parri, A; Patrick, J; Pauletta, G; Paulini, M; Perazzo, A; Pescara, L; Peters, Md; Phillips, Tj; Piacentino, Giovanni Maria; Pillai, M; Pitts, Kt; Plunkett, R; Pondrom, L; Proudfoot, J; Ptohos, F; Punzi, G; Ragan, K; Reher, D; Ribon, A; Rimondi, F; Ristori, L; Robertson, Wj; Rodrigo, T; Rolli, S; Romano, J; Rosenson, L; Roser, R; Saab, T; Sakumoto, Wk; Saltzberg, D; Sansoni, A; Santi, L; Sato, H; Schlabach, P; Schmidt, Ee; Schmidt, Mp; Scribano, A; Segler, S; Seidel, S; Seiya, Y; Sganos, G; Shapiro, Md; Shaw, Nm; Shen, Q; Shepard, Pf; Shimojima, M; Shochet, M; Siegrist, J; Sill, A; Sinervo, P; Singh, P; Skarha, J; Sliwa, K; Snider, Fd; Song, T; Spalding, J; Speer, T; Sphicas, P; Spinella, F; Spiropulu, M; Spiegel, L; Stanco, L; Steele, J; Stefanini, A; Strahl, K; Strait, J; Strohmer, R; Stuart, D; Sullivan, G; Sumorok, K; Suzuki, J; Takada, T; Takahashi, T; Takano, T; Takikawa, K; Tamura, N; Tannenbaum, B; Tartarelli, F; Taylor, W; Teng, Pk; Teramoto, Y; Tether, S; Theriot, D; Thomas, Tl; Thun, R; Thurmankeup, R; Timko, M; Tipton, P; Titov, A; Tkaczyk, S; Toback, D; Tollefson, K; Tollestrup, A; Toyoda, H; Trischuk, W; Detroconiz, Jf; Truitt, S; Tseng, J; Turini, N; Uchida, T; Uemura, N; Ukegawa, F; Unal, G; Valls, J; Vandenbrink, Sc; Vejcik, S; Velev, G; Vidal, R; Vilar, R; Vondracek, M; Vucinic, D; Wagner, Rg; Wagner, Rl; Wahl, J; Wallace, Nb; Walsh, Am; Wang, C; Wang, Ch; Wang, J; Wang, Mj; Wang, Qf; Warburton, A; Watts, T; Webb, R; Wei, C; Wenzel, H; Wester, Wc; Wicklund, Ab; Wicklund, E; Wilkinson, R; Williams, Hh; Wilson, P; Winer, Bl; Winn, D; Wolinski, D; Wolinski, J; Worm, S; Wu, X; Wyss, J; Yagil, A; Yao, W; Yasuoka, K; Ye, Y; Yeh, Gp; Yeh, P; Yin, M; Yoh, J; Yosef, C; Yoshida, T; Yovanovitch, D; Yu, I; Yu, L; Yun, Jc; Zanetti, A; Zetti, F; Zhang, L; Zhang, W; Zucchelli, S.

doi:10.1103/PhysRevLett.79.584

A strong signal for double parton scattering (DP) is observed in a 16 pb(-1) sample of (p) over bar p(-1) sample of (p) over bar p --> gamma + 3 jets + X data from the CDF experiment at the Fermilab Tevatron. The process-independent DP parameter, sigma(eff), is obtained without reference to theoretical calculations by comparing observed DP events to events with hard scatterings at separate (p) over bar p collisions. The result, sigma(eff) = (14.5 +/- 1.7(-2.3)(+1.7)) mb. represents a significant improvement over previous measurements. For the first time, the Feynman x dependence of the sigma(eff) parameter is investigated, and no dependence is seen. RI Lancaster, Mark/C-1693-2008; Vucinic, Dejan/C-2406-2008; Chiarelli, Giorgio/E-8953-2012; Azzi, Patrizia/H-5404-2012

Digital Object Identifier (DOI):	10.1103/PhysRevLett.79.584
Codice identificativo ISI:	WOS:A1997XM97500013
Codice identificativo Scopus:	2-s2.0-0031185729
Handle:	http://hdl.handle.net/11695/3959
Abstract:	A strong signal for double parton scattering (DP) is observed in a 16 pb(-1) sample of (p) over bar p(-1) sample of (p) over bar p --> gamma + 3 jets + X data from the CDF experiment at the Fermilab Tevatron. The process-independent DP parameter, sigma(eff), is obtained without reference to theoretical calculations by comparing observed DP events to events with hard scatterings at separate (p) over bar p collisions. The result, sigma(eff) = (14.5 +/- 1.7(-2.3)(+1.7)) mb. represents a significant improvement over previous measurements. For the first time, the Feynman x dependence of the sigma(eff) parameter is investigated, and no dependence is seen. RI Lancaster, Mark/C-1693-2008; Vucinic, Dejan/C-2406-2008; Chiarelli, Giorgio/E-8953-2012; Azzi, Patrizia/H-5404-2012
Titolo:	Measurement of double parton scattering in (p)over-bar-p collisions at root s=1.8 TeV
Autori:	Abe F Akimoto H Akopian A Albrow MG Amendolia SR Amidei D Antos J Aota S Apollinari G Asakawa T Ashmanskas W Atac M Azfar F AzziBacchetta P Badgett W Bagdasarov S Bailey MW Bao J deBarbaro P BarbaroGaltieri A Barnes VE Barnett BA Barone M Barzi E Bauer G Baumann T Bedeschi F Behrends S Belforte S Bellettini G Bellinger J Benjamin D Benlloch J Bensinger J Benton D Beretvas A Berge JP Berryhill J Bertolucci S Bevensee B Bhatti A Biery K Binkley M Bisello D Blair RE Blocker C Bodek A Bokhari W Bolognesi V Bolla G Bortoletto D Boudreau J Breccia L Bromberg C Bruner N BuckleyGeer E Budd HS Burkett K Busetto G ByonWagner A Byrum KL Cammerata J Campagnari C Campbell M Caner A Carithers W Carlsmith D Castro A Cauz D Cen Y Cervelli F Chang PS Chang PT Chao HY Chapman J Cheng MT Chiarelli G Chikamatsu T Chiou CN Christofek L Cihangir S Clark AG Cobal M Cocca E Contreras M Conway J Cooper J Cordelli M Couyoumtzelis C Crane D CroninHennessy D Culbertson R Daniels T DeJongh F Delchamps S DellAgnello S DellOrso M Demina R Demortier L Deninno M Derwent PF Devlin T Dittmann JR Donati S Done J Dorigo T Dunn A Eddy N Einsweiler K Elias JE Ely R Engels E Errede D Fan Q Feild G Ferretti C Fiori I Flaugher B Foster GW Franklin M Frautschi M Freeman J Friedman J Frisch H Fukui Y Funaki S Galeotti S Gallinaro M Ganel O GarciaSciveres M Garfinkel AF Gay C Geer S Gerdes DW Giannetti P Giokaris N Giromini P Giusti G Gladney L Glenzinski D Gold M Gonzalez J Gordon A Goshaw AT Gotra Y Goulianos K Grassmann H Groer L GrossoPilcher C Guillian G Guo RS Haber C Hafen E Hahn SR Hamilton R Handler R Hans RM Happacher F Hara K Hardman AD Harral B Harris RM Hauger SA Hauser J Hawk C Hayashi E Heinrich J Hinrichsen B Hoffman KD Hohlmann M Holck C Hollebeek R Holloway L Hong S Houk G Hu P Huffman BT Hughes R Huston J Huth J Hylen J Ikeda H Incagli M Incandela J Introzzi G Iwai J Iwata Y Jensen H Joshi U Kadel TW Kajfasz E Kambara H Kamon T Kaneko T Karr K Kasha H Kato Y Keaffaber TA Kelley K Kennedy RD Kephart R Kesten P Kestenbaum D Keutelian H Keyvan F Kharadia B Kim BJ Kim DH Kim HS Kim SB Kim SH Kim YK Kirsch L Koehn P Kondo K Konigsberg J Kopp S Kordas K Korytov A Koska W Kovacs E Kowald W Krasberg M Kroll J Kruse M Kuwabara T Kuhlmann SE Kuns E Laasanen AT Lami S Lammel S Lamoureux JI Lancaster M LeCompte T Leone S Lewis JD Limon P Lindgren M Liss TM Liu LB Liu YC Lockyer N Long O Loomis C Loreti M Lu J Lucchesi D Lukens P Lusin S Lys J Maeshima K Maghakian A Maksimovic P Mangano M Mansour J Mariotti M Marriner JP Martin A Matthews JAJ Mattingly R McIntyre P Melese P Menzione A Meschi E Metzler S Miao C Miao T Michail G Miller R Minato H Miscetti S Mishina M Mitsushio H Miyamoto T Miyashita S Moggi N Morita Y Mukherjee A Muller T Murat P Nakada H Nakano I Nelson C Neuberger D NewmanHolmes C Ngan CYP Ninomiya M Nodulman L Oh SH Ohl KE Ohmoto T Ohsugi T Oishi R Okabe M Okusawa T Oliveira R Olsen J Pagliarone C Paoletti R Papadimitriou V Pappas SP Parashar N Park S Parri A Patrick J Pauletta G Paulini M Perazzo A Pescara L Peters MD Phillips TJ PIACENTINO, Giovanni Maria Pillai M Pitts KT Plunkett R Pondrom L Proudfoot J Ptohos F Punzi G Ragan K Reher D Ribon A Rimondi F Ristori L Robertson WJ Rodrigo T Rolli S Romano J Rosenson L Roser R Saab T Sakumoto WK Saltzberg D Sansoni A Santi L Sato H Schlabach P Schmidt EE Schmidt MP Scribano A Segler S Seidel S Seiya Y Sganos G Shapiro MD Shaw NM Shen Q Shepard PF Shimojima M Shochet M Siegrist J Sill A Sinervo P Singh P Skarha J Sliwa K Snider FD Song T Spalding J Speer T Sphicas P Spinella F Spiropulu M Spiegel L Stanco L Steele J Stefanini A Strahl K Strait J Strohmer R Stuart D Sullivan G Sumorok K Suzuki J Takada T Takahashi T Takano T Takikawa K Tamura N Tannenbaum B Tartarelli F Taylor W Teng PK Teramoto Y Tether S Theriot D Thomas TL Thun R ThurmanKeup R Timko M Tipton P Titov A Tkaczyk S Toback D Tollefson K Tollestrup A Toyoda H Trischuk W deTroconiz JF Truitt S Tseng J Turini N Uchida T Uemura N Ukegawa F Unal G Valls J vandenBrink SC Vejcik S Velev G Vidal R Vilar R Vondracek M Vucinic D Wagner RG Wagner RL Wahl J Wallace NB Walsh AM Wang C Wang CH Wang J Wang MJ Wang QF Warburton A Watts T Webb R Wei C Wenzel H Wester WC Wicklund AB Wicklund E Wilkinson R Williams HH Wilson P Winer BL Winn D Wolinski D Wolinski J Worm S Wu X Wyss J Yagil A Yao W Yasuoka K Ye Y Yeh GP Yeh P Yin M Yoh J Yosef C Yoshida T Yovanovitch D Yu I Yu L Yun JC Zanetti A Zetti F Zhang L Zhang W Zucchelli S. mostra contributor esterni nascondi contributor esterni
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