Searches for new physics in events with a photon and b-quark jet at CDF

Affolder, T; Akimoto, H; Akopian, A; Albrow, Mg; Amaral, P; Amidei, D; Anikeev, K; Antos, J; Apollinari, G; Arisawa, T; Artikov, A; Asakawa, T; Ashmanskas, W; Azfar, F; Azzi Bacchetta, P; Bacchetta, N; Bachacou, H; Bailey, S; de Barbaro, P; Barbaro Galtieri, A; Barnes, Ve; Barnett, Ba; Baroiant, S; Barone, A; Bauer, G; Bedeschi, F; Belforte, S; Bell, Wh; Bellettini, G; Bellinger, J; Benjamin, D; Bensinger, J; Beretvas, A; Berge, Jp; Berryhill, J; Bhatti, A; Binkley, M; Bisello, D; Bishai, M; Blair, Re; Blocker, C; Bloom, K; Blumenfeld, B; Blusk, Sr; Bocci, A; Bodek, A; Bokhari, W; Bolla, G; Bonushkin, Y; Bortoletto, D; Boudreau, J; Brandl, A; van den Brink, S; Bromberg, C; Brozovic, M; Brubaker, E; Bruner, N; Buckley Geer, E; Budagov, J; Budd, Hs; Burkett, K; Busetto, G; Byon Wagner, A; Byrum, Kl; Cabrera, S; Calafiura, P; Campbell, M; Carithers, W; Carlson, J; Carlsmith, D; Caskey, W; Castro, A; Cauz, D; Cerri, A; Chan, Aw; Chang, Ps; Chang, Pt; Chapman, J; Chen, C; Chen, Yc; Cheng, Mt; 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Handa, T; Handler, R; Hao, W; Happacher, F; Hara, K; Hardman, Ad; Harris, Rm; Hartmann, F; Hatakeyama, K; Hauser, J; Heinrich, J; Heiss, A; Herndon, M; Hill, C; Hoffman, Kd; Holck, C; Hollebeek, R; Holloway, L; Hughes, R; Huston, J; Huth, J; Ikeda, H; Incandela, J; Introzzi, G; Iwai, J; Iwata, Y; James, E; Jones, M; Joshi, U; Kambara, H; Kamon, T; Kaneko, T; Karr, K; Kasha, H; Kato, Y; Keaffaber, Ta; Kelley, K; Kelly, M; Kennedy, Rd; Kephart, R; Khazins, D; Kikuchi, T; Kilminster, B; Kim, Bj; Kim, Dh; Kim, Hs; Kim, Mj; Kim, Sb; Kim, Sh; Kim, Yk; Kirby, A; Kirk, M; Kirsch, L; Klinenko, S; Koehn, P; Kondo, K; Konigsberg, J; Korn, A; Korytov, A; Kovacs, E; Kroll, J; Kruse, M; Kuhlmann, Se; Kurino, K; Kuwabara, T; Laasanen, At; Lai, N; Lami, S; Lammel, S; Lancaster, J; Lancaster, M; Lander, R; Lath, A; Latino, G; LeCompte, T; Lee, Aa; Lee, K; Leone, S; Lewis, Jd; Lindgren, M; Liss, Tm; Liu, Jb; Liu, Yc; Litvintsev, Do; Lobban, O; Lockyer, N; Loken, J; Loreti, M; Lucchesi, D; Lukens, P; Lusin, S; Lyons, L; Lys, J; Madrak, R; Maeshima, K; Makisimovic, P; Malferrari, L; Mangano, M; Mariotti, M; Martignon, G; Martin, A; Matthews, Jaj; Mayer, J; Mazzanti, P; McFarland, Ks; McIntyre, P; McKigney, E; Menguzzato, M; Menzione, A; Mesropian, C; Meyer, A; Miao, T; Miller, R; Miller, Js; Minato, H; Miscetti, S; Mishina, M; Mitselmakher, G; Moggi, N; Moore, E; Moore, R; Morita, Y; Moulik, T; Mukherjee, A; Muller, T; Munar, A; Murat, P; Murgia, S; Nachtman, J; Nagaslaev, V; Nahn, S; Nakada, H; Nakano, I; Nelson, C; Nelson, T; Neu, C; Neuberger, D; Newman Holmes, C; Ngan, Cyp; Niu, H; Nodulman, L; Nomerotski, A; Oh, Sh; Oh, Yd; Ohmoto, T; Ohsugi, T; Oishi, R; Okusawa, T; Olsen, J; Orejudos, W; Pagliarone, C; Palmonari, F; Paoletti, R; Papadimitriou, V; Partos, D; Patrick, J; Pauletta, G; Paulini, M; Paus, C; Pescara, L; Phillips, Tj; Piacentino, Giovanni Maria; Pitts, Kt; Pompos, A; Pondrom, L; Pope, G; Popovic, M; Prokoshin, F; Proudfoot, J; Ptohos, F; Pukhov, O; Punzi, G; Rakitine, A; Ratnikov, F; 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doi:10.1103/PhysRevD.65.052006

We have searched for evidence of physics beyond the standard model in events that include an energetic photon and an energetic b-quark jet, produced in 85 pb(-1) of (p) over barp collisions at 1.8 TeV at the Tevatron Collider at Fermilab. This signature, containing at least one gauge boson and a third-generation quark, could arise in the production and decay of a pair of new particles, such as those predicted by supersymmetry, leading to a production rate exceeding standard model predictions. We also search these events for anomalous production of missing transverse energy, additional jets and leptons (e, mu and tau), and additional b quarks. We find no evidence for any anomalous production of gammab or gammab + X events, We present limits on two supersymmetric models: a model where the photon is produced in the decay (χ) over tilde (0)(2)-->gamma(χ) over tilde (0)(1), and a model where the photon is produced in the neutralino decay into the gravitino LSP, (χ) over tilde (0)(1)-->gamma(G) over tilde. We also present our limits in a model-independent form and test methods of applying model-independent limits. RI Lancaster, Mark/C-1693-2008; Vucinic, Dejan/C-2406-2008; Nomerotski, Andrei/A-5169-2010; Ruiz, Alberto/E-4473-2011; St.Denis, Richard/C-8997-2012; Prokoshin, Fedor/E-2795-2012; Chiarelli, Giorgio/E-8953-2012; Azzi, Patrizia/H-5404-2012

Digital Object Identifier (DOI):	http://dx.doi.org/10.1103/PhysRevD.65.052006
Codice identificativo ISI:	WOS:000174548000009
Codice identificativo Scopus:	2-s2.0-4243244049
Handle:	http://hdl.handle.net/11695/4070
Abstract:	We have searched for evidence of physics beyond the standard model in events that include an energetic photon and an energetic b-quark jet, produced in 85 pb(-1) of (p) over barp collisions at 1.8 TeV at the Tevatron Collider at Fermilab. This signature, containing at least one gauge boson and a third-generation quark, could arise in the production and decay of a pair of new particles, such as those predicted by supersymmetry, leading to a production rate exceeding standard model predictions. We also search these events for anomalous production of missing transverse energy, additional jets and leptons (e, mu and tau), and additional b quarks. We find no evidence for any anomalous production of gammab or gammab + X events, We present limits on two supersymmetric models: a model where the photon is produced in the decay (χ) over tilde (0)(2)-->gamma(χ) over tilde (0)(1), and a model where the photon is produced in the neutralino decay into the gravitino LSP, (χ) over tilde (0)(1)-->gamma(G) over tilde. We also present our limits in a model-independent form and test methods of applying model-independent limits. RI Lancaster, Mark/C-1693-2008; Vucinic, Dejan/C-2406-2008; Nomerotski, Andrei/A-5169-2010; Ruiz, Alberto/E-4473-2011; St.Denis, Richard/C-8997-2012; Prokoshin, Fedor/E-2795-2012; Chiarelli, Giorgio/E-8953-2012; Azzi, Patrizia/H-5404-2012
Titolo:	Searches for new physics in events with a photon and b-quark jet at CDF
Autori:	Affolder T Akimoto H Akopian A Albrow MG Amaral P Amidei D Anikeev K Antos J Apollinari G Arisawa T Artikov A Asakawa T Ashmanskas W Azfar F Azzi Bacchetta P Bacchetta N Bachacou H Bailey S de Barbaro P Barbaro Galtieri A Barnes VE Barnett BA Baroiant S Barone A Bauer G Bedeschi F Belforte S Bell WH Bellettini G Bellinger J Benjamin D Bensinger J Beretvas A Berge JP Berryhill J Bhatti A Binkley M Bisello D Bishai M Blair RE Blocker C Bloom K Blumenfeld B Blusk SR Bocci A Bodek A Bokhari W Bolla G Bonushkin Y Bortoletto D Boudreau J Brandl A van den Brink S Bromberg C Brozovic M Brubaker E Bruner N Buckley Geer E Budagov J Budd HS Burkett K Busetto G Byon Wagner A Byrum KL Cabrera S Calafiura P Campbell M Carithers W Carlson J Carlsmith D Caskey W Castro A Cauz D Cerri A Chan AW Chang PS Chang PT Chapman J Chen C Chen YC Cheng MT Chertok M Chiarelli G Chirikov Zorin I Chlachidze G Chlebana F Christofek L Chu ML Chung YS Ciobanu CI Clark AG Connolly A Conway J Cordelli M Cranshaw J Cropp R Culbertson R Dagenhart D D'Auria S DeJongh F Dell'Agnello S Dell'Orso M Demortier L Deninno M Derwent PF Devlin T Dittmann JR Dominguez A Donati S Done J D'Onofrio M Dorigo T Eddy N Einsweiler K Elias JE Engels E Erbacher R Errede D Errede S Fan Q Feild RG Fernandez JP Ferretti C Field RD Fiori I Flaugher B Foster GW Franklin M Freeman J Friedman J Frisch HJ Fukui Y Furic I Galeotti S Gallas A Gallinaro A Gao T Garcia Sciveres M Garfinkel AF Gatti P Gay C Gerdes DW Giannetti P Glagolev V Glenzinski D Gold M Goldstein J Gorelov I Goshaw AT Gotra Y Goulianos K Green C Grim G Gris P Groer L Grosso Pilcher C Guenther M Guillian G da Costa JG Haas RM Haber C Hahn SR Hall C Handa T Handler R Hao W Happacher F Hara K Hardman AD Harris RM Hartmann F Hatakeyama K Hauser J Heinrich J Heiss A Herndon M Hill C Hoffman KD Holck C Hollebeek R Holloway L Hughes R Huston J Huth J Ikeda H Incandela J Introzzi G Iwai J Iwata Y James E Jones M Joshi U Kambara H Kamon T Kaneko T Karr K Kasha H Kato Y Keaffaber TA Kelley K Kelly M Kennedy RD Kephart R Khazins D Kikuchi T Kilminster B Kim BJ Kim DH Kim HS Kim MJ Kim SB Kim SH Kim YK Kirby A Kirk M Kirsch L Klinenko S Koehn P Kondo K Konigsberg J Korn A Korytov A Kovacs E Kroll J Kruse M Kuhlmann SE Kurino K Kuwabara T Laasanen AT Lai N Lami S Lammel S Lancaster J Lancaster M Lander R Lath A Latino G LeCompte T Lee AA Lee K Leone S Lewis JD Lindgren M Liss TM Liu JB Liu YC Litvintsev DO Lobban O Lockyer N Loken J Loreti M Lucchesi D Lukens P Lusin S Lyons L Lys J Madrak R Maeshima K Makisimovic P Malferrari L Mangano M Mariotti M Martignon G Martin A Matthews JAJ Mayer J Mazzanti P McFarland KS McIntyre P McKigney E Menguzzato M Menzione A Mesropian C Meyer A Miao T Miller R Miller JS Minato H Miscetti S Mishina M Mitselmakher G Moggi N Moore E Moore R Morita Y Moulik T Mukherjee A Muller T Munar A Murat P Murgia S Nachtman J Nagaslaev V Nahn S Nakada H Nakano I Nelson C Nelson T Neu C Neuberger D Newman Holmes C Ngan CYP Niu H Nodulman L Nomerotski A Oh SH Oh YD Ohmoto T Ohsugi T Oishi R Okusawa T Olsen J Orejudos W Pagliarone C Palmonari F Paoletti R Papadimitriou V Partos D Patrick J Pauletta G Paulini M Paus C Pescara L Phillips TJ PIACENTINO, Giovanni Maria Pitts KT Pompos A Pondrom L Pope G Popovic M Prokoshin F Proudfoot J Ptohos F Pukhov O Punzi G Rakitine A Ratnikov F Reher D Reichold A Ribon A Riegler W Rimondi F Ristori L Riveline M Robertson WJ Robinson A Rodrigo T Rolli S Rosenson L Roser R Rossin R Roy A Ruiz A Safonov A St Denis R Sakumoto WK Saltzberg D Sanchez C Sansoni A Santi L Sato H Savard P Schlabach P Schmidt EE Schmidt MP Schmitt M Scodellaro L Scott A Scribano A Segler S Seidel S Seiya Y Semenov A Semeria F Shah T Shapiro MD Shepard PF Shibayama T Shimojima M Shochet M Sidoti A Siegrist J Sill A Sinervo P Singh P Slaughter AJ Sliwa K Smith C Snider FD Solodsky A Spalding J Speer T Sphicas P Spinella F Spiropulu M Spiegel L Steele J Stefanini A Strologas J Strumia F Stuart D Sumorok K Takano T Takashima R Takikawa K Tamburello P Tanaka M Tannenbaum B Tecchio M Tesarek R Teng PK Terashi K Tether S Thompson AS Thurman Keup R Tipton P Tkaczyk S Toback D Tollefson K Tollestrup A Tonelli D Toyoda H Trischuk W de Troconiz JF Tseng J Turini N Ukegawa F Vaiciulis T Valls J Vejcik S Velev G Veramendi G Vidal R Vila I Vilar R Volobouev I von der Mey M Vucinic D Wagner RG Wagner RL Wallace NB Wan Z Wang C Wang MJ Ward B Waschke S Watanabe T Waters D Watts T Webb R Wenzel H Wester WC Wicklund AB Wicklund E Wilkes T Williams HH Wilson P Winer BL Winn D Wolbers S Wolinski D Wolinski J Wolinski S Worm S Wu X Wyss J Yao W Yeh GP Yeh P Yoh J Yosef C Yoshida T Yu I Yu S Yu Z Zanetti A Zetti F Zucchelli S. mostra contributor esterni nascondi contributor esterni
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