Search for heavy, long-lived neutralinos that decay to photons at CDF II using photon timing

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doi:10.1103/PhysRevD.78.032015

We present the results of the first hadron collider search for heavy, long-lived neutralinos that decay via chi(0)(1)->gamma G in gauge-mediated supersymmetry breaking models. Using an integrated luminosity of 570 +/- 34 pb(-1) of p (p) over bar collisions at root s=1.96 TeV, we select gamma+jet+missing transverse energy candidate events based on the arrival time of a high-energy photon at the electromagnetic calorimeter as measured with a timing system that was recently installed on the CDF II detector. We find 2 events, consistent with the background estimate of 1.3 +/- 0.7 events. While our search strategy does not rely on model-specific dynamics, we set cross section limits and place the world-best 95% C.L. lower limit on the chi(0)(1) mass of 101 GeV/c(2) at tau(0)(chi 1)=5 ns. RI Ruiz, Alberto/E-4473-2011; Robson, Aidan/G-1087-2011; De Cecco, Sandro/B-1016-2012; Prokoshin, Fedor/E-2795-2012

Titolo:	Search for heavy, long-lived neutralinos that decay to photons at CDF II using photon timing
Autori:	Aaltonen T Adelman J Akimoto T Albrow MG Gonzalez BA Amerio S Amidei D Anastassov A Annovi A Antos J Apollinari G Apresyan A Arisawa T Artikov A Ashmanskas W Attal A Aurisano A Azfar F Azzurri P Badgett W Barbaro Galtieri A Barnes VE Barnett BA Bartsch V Bauer G Beauchemin PH Bedeschi F Bednar P Beecher D Behari S Bellettini G Bellinger J Benjamin D Beretvas A Beringer J Bhatti A Binkley M Bisello D Bizjak I Blair RE Blocker C Blumenfeld B Bocci A Bodek A Boisvert V Bolla G 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 Campanelli M Campbell M Canelli F Canepa A 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 Chuang SH Chung K Chung WH Chung YS Ciobanu CI Ciocci MA Clark A Clark D Compostella G Convery ME Conway J Copic K Cordelli M Cortiana G 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 Derwent PF Di Giovanni GP Dionisi C Di Ruzza B Dittmann JR D'Onofrio M Donati S Dong P Donini J Dorigo T Dube S Efron J Elagin A Erbacher R Errede D Errede S Eusebi R Fang HC Farrington S Fedorko WT Feild RG Feindt M Fernandez JP Ferrazza C Field R Flanagan G Forrest R Franklin M Freeman JC Frisch H Furic I Gallinaro M Galyardt J Garberson F Garcia JE Garfinkel AF Geffert 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 Handler R Happacher F Hara K Hare D Hare M Harper S Harr RF Harris RM Hartz M Hatakeyama K Hauser J Hays C Heck M Heijboer A Heinemann B 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 Husemann U Huston J Incandela J Introzzi G Iori M Ivanov A James E 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 Keung J Khotilovich V Kilminster B Kim DH Kim HS Kim JE Kim MJ Kim SB Kim SH Kim YK Kimura N Kirsch L Klimenko S Knuteson B Ko BR Koay SA Kondo K Kong DJ Konigsberg J Korytov A Kotwal AV Kreps M Kroll J Krop D Krumnack N Kruse M Krutelyov V Kubo T Kuhr T Kulkarni NP Kurata M Kusakabe Y 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 SW Leone S Lewis JD Lin CS Linacre J Lindgren M Lipeles E Lister A Litvintsev DO Liu C Liu T Lockyer NS Loginov A Loreti M Lovas L Lu RS Lucchesi D Lueck J Luci C Lujan P Lukens P Lungu G Lyons L Lys J Lysak R Lytken E Mack P MacQueen D Madrak R Maeshima K Makhoul K Maki T 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 Maruyama T Mastrandrea P Masubuchi T Mattson ME Mazzanti P McFarland KS McIntyre P McNulty R Mehta A Mehtala P Menzione A Merkel P Mesropian C Miao T Miladinovic N Miller R Mills C Milnik M Mitra A Mitselmakher G Miyake H Moggi N Moon CS Moore R MORELLO, MICHAEL JOSEPH Morlok J Fernandez PM Mulmensta J Mukherjee A Muller T Mumford R Murat P Mussini M Nachtman J Nagai Y Nagano A Naganoma J Nakamura K Nakano I Napier A Necula V Neu C Neubauer MS 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 Paramonov AA Parks B Pashapour S Patel R Patrick J Pauletta G Paulini M Paus C Pellett DE Penzo A Phillips TJ Piacentino G Pianori E Pinera L Pitts K Plager C Pondrom L Poukhov O Pounder N Prakoshyn F Pronko A Proudfoot J Ptohos F Pueschel E Punzi G Pursley J Rademacker J Rahaman A Ramakrishnan V Ranjan N Redondo I Reisert B Rekovic V Renton P 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 Saarikko H Safonov A Sakumoto WK Salto O Santi L Sarkar S Sartori L Sato K Savoy Navarro A Scheidle T Schlabach P Schmidt A Schmidt EE Schmidt MA Schmidt MP Schmitt M Schwarz T Scodellaro L Scott AL Scribano A Scuri F Sedov A Seidel S Seiya Y Semenov A Sexton Kennedy L Sfyrla A Shalhout SZ Shears T Shepard PF Sherman D Shimojima M Shiraishi S Shochet M Shon Y Shreyber I Sidoti A Sinervo P Sisakyan A Slaughter AJ Slaunwhite J Sliwa K Smith JR Snider FD Snihur R Soha A Somalwar S Sorin V Spalding J Spreitzer T Squillacioti P Stanitzki M Denis RS Stelzer B Stelzer Chilton O Stentz D Strologas J Stuart D Suh JS Sukhanov A Suslov I Suzuki T Taffard A Takashima R Takeuchi Y Tanaka R Tecchio M Teng PK Terashi K Thom J Thompson AS Thompson GA Thomson E Tipton P Tiwari V Tkaczyk S Toback D Tokar S Tollefson K Tomura T Tonelli D Torre S Torretta D Totaro P Tourneur S Tu Y Turini N Ukegawa F Vallecorsa S van Remortel N Varganov A Vataga E Vazquez F Velev G Vellidis C Veszpremi V Vidal M Vidal R Vila I Vilar R Vine T Vogel M Volobouev I Volpi G Rthwein FW Wagner P Wagner RG Wagner RL Wagner Kuhr J Wagner W Wakisaka T Wallny R Wang SM Warburton A Waters D Weinberger M Wester WC Whitehouse B Whiteson D Wicklund AB Wicklund E Williams G Williams HH Wilson P Winer BL Wittich P Wolbers S Wolfe C Wright T Wu X Wynne SM Yagil A Yamamoto K Yamaoka J Yang UK Yang YC Yao WM Yeh GP Yoh J Yorita K Yoshida T Yu GB Yu I Yu SS Yun JC Zanello L Zanetti A Zaw I Zhang X Zheng Y Zucchelli S. mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2008
Rivista:	PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY
Digital Object Identifier (DOI):	http://dx.doi.org/10.1103/PhysRevD.78.032015
Appare nelle tipologie:	1.1 Articolo in rivista

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