Search for Supersymmetry with Gauge-Mediated Breaking in Diphoton Events with Missing Transverse Energy at CDF II

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doi:10.1103/PhysRevLett.104.011801

We present the results of a search for supersymmetry with gauge-mediated breaking and (chi) over tilde (1)(0) -> gamma(G) over tilde in the gamma gamma + missing transverse energy final state. In 2.6 +/- 0.2 fb(-1) of p (p) over bar collisions at root s 1.96 TeV recorded by the CDF II detector we observe no candidate events, consistent with a standard model background expectation of 1.4 +/- 0.4 events. We set limits on the cross section at the 95% C.L. and place the world's best limit of 149 GeV/c(2) on the (chi) over tilde (1)(0) mass at tau((chi) over tilde 01) << 1 ns. We also exclude regions in the (chi) over tilde (1)(0) mass-lifetime plane for tau((chi) over tilde 01) less than or similar to 2 ns. RI De Cecco, Sandro/B-1016-2012; Robson, Aidan/G-1087-2011; St.Denis, Richard/C-8997-2012; Prokoshin, Fedor/E-2795-2012; Ruiz, Alberto/E-4473-2011

Digital Object Identifier (DOI):	http://dx.doi.org/10.1103/PhysRevLett.104.011801
Codice identificativo ISI:	WOS:000273881900006
Codice identificativo Scopus:	2-s2.0-73649120632
Handle:	http://hdl.handle.net/11695/4164
Abstract:	We present the results of a search for supersymmetry with gauge-mediated breaking and (chi) over tilde (1)(0) -> gamma(G) over tilde in the gamma gamma + missing transverse energy final state. In 2.6 +/- 0.2 fb(-1) of p (p) over bar collisions at root s 1.96 TeV recorded by the CDF II detector we observe no candidate events, consistent with a standard model background expectation of 1.4 +/- 0.4 events. We set limits on the cross section at the 95% C.L. and place the world's best limit of 149 GeV/c(2) on the (chi) over tilde (1)(0) mass at tau((chi) over tilde 01) << 1 ns. We also exclude regions in the (chi) over tilde (1)(0) mass-lifetime plane for tau((chi) over tilde 01) less than or similar to 2 ns. RI De Cecco, Sandro/B-1016-2012; Robson, Aidan/G-1087-2011; St.Denis, Richard/C-8997-2012; Prokoshin, Fedor/E-2795-2012; Ruiz, Alberto/E-4473-2011
Titolo:	Search for Supersymmetry with Gauge-Mediated Breaking in Diphoton Events with Missing Transverse Energy at CDF II
Autori:	Aaltonen T Adelman J Gonzalez BA Amerio S Amidei D Anastassov A Annovi A Antos J Apollinari G Apresyan A Arisawa T Artikov A Asaadi J Ashmanskas W Attal A Aurisano A Azfar F Badgett W Barbaro Galtieri A Barnes VE Barnett BA Barria P Bartos P Bauer G Beauchemin PH Bedeschi F Beecher D Behari S Bellettini G Bellinger J Benjamin D Beretvas A Bhatti A Binkley M Bisello D Bizjak I Blair RE Blocker C Blumenfeld B Bocci A Bodek A Boisvert V Bortoletto D Boudreau J Boveia A Brau B Bridgeman A Brigliadori L Bromberg C Brubaker E Budagov J Budd HS Budd S Burkett K Busetto G Bussey P Buzatu A Byrum KL Cabrera S Calancha C Camarda S Campanelli M Campbell M Canelli F Canepa A Carls B Carlsmith D Carosi R Carrillo S Carron S Casal B Casarsa M Castro A Catastini P Cauz D Cavaliere V Cavalli Sforza M Cerri A Cerrito L Chang SH Chen YC Chertok M Chiarelli G Chlachidze G Chlebana F Cho K Chokheli D Chou JP Choudalakis G Chung K Chung WH Chung YS Chwalek T Ciobanu CI Ciocci MA Clark A Clark D Compostella G Convery ME Conway J Corbo M Cordelli M Cox CA Cox DJ Crescioli F Almenar CC Cuevas J Culbertson R Cully JC Dagenhart D Datta M Davies T de Barbaro P De Cecco S Deisher A De Lorenzo G Dell'Orso M Deluca C Demortier L Deng J Deninno M d'Errico M Di Canto A di Giovanni GP Di Ruzza B Dittmann JR D'Onofrio M Donati S Dong P Dorigo T Dube S Ebina K Elagin A Erbacher R Errede D Errede S Ershaidat N Eusebi R Fang HC Farrington S Fedorko WT Feild RG Feindt M Fernandez JP Ferrazza C Field R Flanagan G Forrest R Frank MJ Franklin M Freeman JC Furic I Gallinaro M Galyardt J Garberson F Garcia JE Garfinkel AF Garosi P Genser K Gerberich H Gerdes D Gessler A Giagu S Giakoumopoulou V Giannetti P Gibson K Gimmell JL Ginsburg CM Giokaris N Giordani M Giromini P Giunta M Giurgiu G Glagolev V Glenzinski D Gold M Goldschmidt N Golossanov A Gomez G Gomez Ceballos G Goncharov M Gonzalez O Gorelov I Goshaw AT Goulianos K Gresele A Grinstein S Grosso Pilcher C Group RC Grundler U da Costa JG Gunay Unalan Z Haber C Hahn K Hahn SR Halkiadakis E Han BY Han JY Happacher F Hara K Hare D Hare M Harr RF Hartz M Hatakeyama K Hays C Heck M Heinrich J Henderson C Herndon M Heuser J Hewamanage S Hidas D Hill CS Hirschbuehl D Hocker A Hou S Houlden M Hsu SC Huffman BT Hughes RE Hurwitz M Husemann U Hussein M Huston J Incandela J Introzzi G Iori M Ivanov A James E Jang D Jayatilaka B Jeon EJ Jha MK Jindariani S Johnson W Jones M Joo KK Jun SY Jung JE Junk TR Kamon T Kar D Karchin PE Kato Y Kephart R Ketchum W Keung J Khotilovich V Kilminster B Kim DH Kim HS Kim HW Kim JE Kim MJ Kim SB Kim SH Kim YK Kimura N Kirsch L Klimenko S Knuteson B Kondo K Kong DJ Konigsberg J Korytov A Kotwal AV Kreps M Kroll J Krop D Krumnack N Kruse M Krutelyov V Kuhr T Kulkarni NP Kurata M Kwang S Laasanen AT Lami S Lammel S Lancaster M Lander RL Lannon K Lath A Latino G Lazzizzera I LeCompte T Lee E Lee HS Lee JS Lee SW Leone S Lewis JD Lin CJ Linacre J Lindgren M Lipeles E Lister A Litvintsev DO Liu C Liu T Lockyer NS Loginov A Lovas L Lucchesi D Lueck J Lujan P Lukens P Lungu G Lys J Lysak R MacQueen D Madrak R Maeshima K Makhoul K Maksimovic P Malde S Malik S Manca G Manousakis Katsikakis A Margaroli F Marino C Marino CP Martin A Martin V Martinez M Martinez Ballarin R Mastrandrea P Mathis M Mattson ME Mazzanti P McFarland KS McIntyre P McNulty R Mehta A Mehtala P Menzione A Mesropian C Miao T Mietlicki D Miladinovic N Miller R Mills C Milnik M Mitra A Mitselmakher G Miyake H Moed S Moggi N Mondragon MN Moon CS Moore R Morello MJ Morlock J Fernandez PM Mulmenstadt J Mukherjee A Muller T Murat P Mussini M Nachtman J Nagai Y Naganoma J Nakamura K Nakano I Napier A Nett J Neu C Neubauer MS Neubauer S Nielsen J Nodulman L Norman M Norniella O Nurse E Oakes L Oh SH Oh YD Oksuzian I Okusawa T Orava R Osterberg K Griso SP Pagliarone C Palencia E Papadimitriou V Papaikonomou A Paramanov AA Parks B Pashapour S Patrick J Pauletta G Paulini M Paus C Peiffer T Pellett DE Penzo A Phillips TJ PIACENTINO, Giovanni Maria Pianori E Pinera L Pitts K Plager C Pondrom L Potamianos K Poukhov O Prokoshin F Pronko A Ptohos F Pueschel E Punzi G Pursley J Rademacker J Rahaman A Ramakrishnan V Ranjan N Redondo I Renton P Renz M Rescigno M Richter S Rimondi F Ristori L Robson A Rodrigo T Rodriguez T Rogers E Rolli S Roser R Rossi M Rossin R Roy P Ruiz A Russ J Rusu V Rutherford B Saarikko H Safonov A Sakumoto WK Santi L Sartori L Sato K Savoy Navarro A Schlabach P Schmidt A Schmidt EE Schmidt MA Schmidt MP Schmitt M Schwarz T Scodellaro L Scribano A Scuri F Sedov A Seidel S Seiya Y Semenov A Sexton Kennedy L Sforza F Sfyrla A Shalhout SZ Shears T Shepard PF Shimojima M Shiraishi S Shochet M Shon Y Shreyber I Simonenko A Sinervo P Sisakyan A Slaughter AJ Slaunwhite J Sliwa K Smith JR Snider FD Snihur R Soha A Somalwar S Sorin V Spreitzer T Squillacioti P Stanitzki M St Denis R Stelzer B Stelzer Chilton O Stentz D Strologas J Strycker GL Suh JS Sukhanov A Suslov I Taffard A Takashima R Takeuchi Y Tanaka R Tang J Tecchio M Teng PK Thom J Thome J Thompson GA Thomson E Tipton P Ttito Guzman P Tkaczyk S Toback D Tokar S Tollefson K Tomura T Tonelli D Torre S Torretta D Totaro P Tourneur S Trovato M Tsai SY Tu Y Turini N Ukegawa F Uozumi S van Remortel N Varganov A Vataga E Vazquez F Velev G Vellidis C Vidal M Vila I Vilar R Vogel M Volobouev I Volpi G Wagner P Wagner RG Wagner RL Wagner W Wagner Kuhr J Wakisaka T Wallny R Wang SM Warburton A Waters D Weinberger M Weinelt J Wester WC Whitehouse B Whiteson D Wicklund AB Wicklund E Wilbur S Williams G Williams HH Wilson P Winer BL Wittich P Wolbers S Wolfe C Wolfe H Wright T Wu X Wurthwein F Xie S Yagil A Yamamoto K Yamaoka J Yang UK Yang YC Yao WM Yeh GP Yi K Yoh J Yorita K Yoshida T Yu GB Yu I Yu SS Yun JC Zanetti A Zeng Y Zhang X Zheng Y Zucchelli S. mostra contributor esterni nascondi contributor esterni
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