Calculable corrections to brane black hole decay. II. Greybody factors for spin 1/2 and 1

Physical Review D - Particles, Fields, Gravitation and Cosmology 67:10 (2003)

Authors:

P Kanti, J March-Russell

Abstract:

The production of black holes in extra-dimensional brane-world theories can lead to detectable signals via the Hawking evaporation of the black hole to brane-localized standard model modes. We calculate, as a function of partial wave number and number of toroidally compactified extra dimensions, the leading correction to the energy spectrum of such Hawking radiation (the greybody factors) for decay into spin-1/2 fermions and spin-1 gauge fields localized on the standard model brane. We derive the associated improved differential emission rates for both types of fields. We provide both simple expressions for the leading behavior of the greybody factors in the low-energy limit [Formula Presented] and numerical evaluation of our full analytic expressions for the emission rates, valid for [Formula Presented] The full analytic expressions demonstrate that both the greybody factors and emission rates are enhanced as the number of extra dimensions increases. © 2003 The American Physical Society.

Search for the flavor-changing neutral current decay D0→µ+µ- in pp collisions at √s=1.96 TeV

Physical Review D 68:9 (2003)

Authors:

D Acosta, T Affolder, MH Ahn, T Akimoto, MG Albrow, D Ambrose, D Amidei, A Anastassov, K Anikeev, A Annovi, J Antos, M Aoki, G Apollinari, JF Arguin, T Arisawa, A Artikov, T Asakawa, W Ashmanskas, A Attal, F Azfar, P Azzi-Bacchetta, N Bacchetta, H Bachacou, W Badgett, S Bailey, A Barbaro-Galtieri, G Barker, VE Barnes, BA Barnett, S Baroiant, M Barone, G Bauer, F Bedeschi, S Behari, S Belforte, WH Bell, G Bellettini, J Bellinger, D Benjamin, A Beretvas, A Bhatti, M Binkley, D Bisello, M Bishai, RE Blair, C Blocker, K Bloom, B Blumenfeld, A Bocci, A Bodek, G Bolla, A Bolshov, PSL Booth, D Bortoletto, J Boudreau, S Bourov, C Bromberg, M Brozovic, E Brubaker, J Budagov, HS Budd, K Burkett, G Busetto, P Bussey, KL Byrum, S Cabrera, P Calafiura, M Campanelli, M Campbell, A Canepa, D Carlsmith, S Carron, R Carosi, M Casarsa, W Caskey, A Castro, P Catastini, D Cauz, A Cerri, C Cerri, L Cerrito, J Chapman, C Chen, YC Chen, M Chertok, G Chiarelli, G Chlachidze, F Chlebana, K Cho, D Chokheli, ML Chu, JY Chung, WH Chung, YS Chung, CI Ciobanu, MA Ciocci, AG Clark, MN Coca, A Connolly, ME Convery

Abstract:

We report on a search for the flavor-changing neutral current decay D 0→µ+µ- in pp- collisions at √s = 1.96 TeV using 65 pb-1 of data collected by the CDF II experiment at the Fermilab Tevatron Collider. A displaced-track trigger selects long-lived D0 candidates in the D0→µ +µ- search channel, the kinematically similar D 0→П+p- channel used for normalization, the Cabibbo-favored D0K-П- channel used to optimize the selection criteria in an unbiased manner, and their charge conjugates. Finding no signal events in the D0→µ+µ- search window, we set an upper limit on the branching fraction B(D0→µ+µ-)≤2.5×10-6 (3.3×10-6) at the 90% (95%) confidence level.

Sensor Development for the CMS Pixel Detector

Institute of Electrical and Electronics Engineers (IEEE) 1 (2003) 350-354

Authors:

D Bortoletto, V Chiochia, S Cucciarelli, A Dorokhov, M Konecki, K Prokofiev, C Regenfus, T Rohe, S Son, T Speer, M Swartz

The evaporative cooling of a gas of caesium atoms in the hydrodynamic regime

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS 36:16 (2003) PII S0953-4075(03)64697-3

Authors:

ZY Ma, AM Thomas, CJ Foot, SL Cornish

Limits on extra dimensions and new particle production in the exclusive photon and missing energy signature in pp collisions at square root [s]=1.8 TeV.

Phys Rev Lett 89:28 Pt 1 (2002) 281801

Authors:

D Acosta, T Affolder, H Akimoto, MG Albrow, D Ambrose, D Amidei, K Anikeev, J Antos, G Apollinari, T Arisawa, A Artikov, T Asakawa, W Ashmanskas, F Azfar, P Azzi-Bacchetta, N Bacchetta, H Bachacou, W Badgett, S Bailey, P de Barbaro, A Barbaro-Galtieri, VE Barnes, BA Barnett, S Baroiant, M Barone, G Bauer, F Bedeschi, S Behari, S Belforte, WH Bell, G Bellettini, J Bellinger, D Benjamin, J Bensinger, A Beretvas, J Berryhill, A Bhatti, M Binkley, D Bisello, M Bishai, RE Blair, C Blocker, K Bloom, B Blumenfeld, SR Blusk, A Bocci, A Bodek, G Bolla, Y Bonushkin, D Bortoletto, J Boudreau, A Brandl, C Bromberg, M Brozovic, E Brubaker, N Bruner, J Budagov, HS Budd, K Burkett, G Busetto, KL Byrum, S Cabrera, P Calafiura, M Campbell, W Carithers, J Carlson, D Carlsmith, W Caskey, A Castro, D Cauz, A Cerri, AW Chan, PS Chang, PT Chang, J Chapman, C Chen, YC Chen, M-T Cheng, M Chertok, G Chiarelli, I Chirikov-Zorin, G Chlachidze, F Chlebana, L Christofek, ML Chu, JY Chung, W-H Chung, YS Chung, CI Ciobanu, AG Clark, M Coca, AP Colijn, A Connolly, M Convery, J Conway, M Cordelli, J Cranshaw, R Culbertson, D Dagenhart, S D'Auria, F DeJongh, S Dell'Agnello, M Dell'Orso, S Demers, L Demortier, M Deninno, PF Derwent, T Devlin, JR Dittmann, A Dominguez, S Donati, M D'Onofrio, T Dorigo, I Dunietz, N Eddy, K Einsweiler, E Engels, R Erbacher, D Errede, S Errede, Q Fan, H-C Fang, RG Feild, JP Fernandez, C Ferretti, RD Field, I Fiori, B Flaugher, LR Flores-Castillo, GW Foster, M Franklin, J Freeman, J Friedman, HJ Frisch, Y Fukui, I Furic, S Galeotti, A Gallas, M Gallinaro, T Gao, M Garcia-Sciveres, AF Garfinkel, P Gatti, C Gay, DW Gerdes, E Gerstein, P Giannetti, K Giolo, M Giordani, P Giromini, V Glagolev, D Glenzinski, M Gold, J Goldstein, G Gomez, I Gorelov, AT Goshaw, Y Gotra, K Goulianos, C Green, G Grim, C Grosso-Pilcher, M Guenther, G Guillian, J Guimaraes da Costa, RM Haas, C Haber, SR Hahn, C Hall, T Handa, R Handler, F Happacher, K Hara, AD Hardman, RM Harris, F Hartmann, K Hatakeyama, J Hauser, J Heinrich, A Heiss, M Herndon, C Hill, A Hocker, KD Hoffman, R Hollebeek, L Holloway, BT Huffman, R Hughes, J Huston, J Huth, H Ikeda, J Incandela, G Introzzi, A Ivanov, J Iwai, Y Iwata, E James, M Jones, U Joshi, H Kambara, T Kamon, T Kaneko, M Karagoz Unel, K Karr, S Kartal, H Kasha, Y Kato, TA Keaffaber, K Kelley, M Kelly, RD Kennedy, R Kephart, D Khazins, T Kikuchi, B Kilminster, BJ Kim, DH Kim, HS Kim, MJ Kim, SB Kim, SH Kim, YK Kim, M Kirby, M Kirk, L Kirsch, S Klimenko, P Koehn, K Kondo, J Konigsberg, A Korn, A Korytov, E Kovacs, J Kroll, M Kruse, V Krutelyov, SE Kuhlmann, K Kurino, T Kuwabara, AT Laasanen, N Lai, S Lami, S Lammel, J Lancaster, M Lancaster, R Lander, A Lath, G Latino, T LeCompte, Y Le, K Lee, SW Lee, S Leone, JD Lewis, M Lindgren, TM Liss, JB Liu, T Liu, YC Liu, DO Litvintsev, O Lobban, NS Lockyer, J Loken, M Loreti, D Lucchesi, P Lukens, S Lusin, L Lyons, J Lys, R Madrak, K Maeshima, P Maksimovic, L Malferrari, M Mangano, G Manca, M Mariotti, G Martignon, M Martin, A Martin, V Martin, JAJ Matthews, P Mazzanti, KS McFarland, P McIntyre, M Menguzzato, A Menzione, P Merkel, C Mesropian, A Meyer, T Miao, R Miller, JS Miller, H Minato, S Miscetti, M Mishina, G Mitselmakher, Y Miyazaki, N Moggi, E Moore, R Moore, Y Morita, T Moulik, M Mulhearn, A Mukherjee, T Muller, A Munar, P Murat, S Murgia, J Nachtman, V Nagaslaev, S Nahn, H Nakada, I Nakano, R Napora, C Nelson, T Nelson, C Neu, D Neuberger, C Newman-Holmes, C-YP Ngan, T Nigmanov, H Niu, L Nodulman, A Nomerotski, SH Oh, YD Oh, T Ohmoto, T Ohsugi, R Oishi, T Okusawa, J Olsen, PUE Onyisi, W Orejudos, C Pagliarone, F Palmonari, R Paoletti, V Papadimitriou, D Partos, J Patrick, G Pauletta, M Paulini, T Pauly, C Paus, D Pellett, L Pescara, TJ Phillips, G Piacentino, J Piedra, KT Pitts, A Pompos, L Pondrom, G Pope, T Pratt, F Prokoshin, J Proudfoot, F Ptohos, O Pukhov, G Punzi, J Rademacker, A Rakitine, F Ratnikov, D Reher, A Reichold, P Renton, A Ribon, W Riegler, F Rimondi, L Ristori, M Riveline, WJ Robertson, T Rodrigo, S Rolli, L Rosenson, R Roser, R Rossin, C Rott, A Roy, A Ruiz, A Safonov, R St Denis, WK Sakumoto, D Saltzberg, C Sanchez, A Sansoni, L Santi, H Sato, P Savard, A Savoy-Navarro, P Schlabach, EE Schmidt, MP Schmidt, M Schmitt, L Scodellaro, A Scott, A Scribano, A Sedov, S Seidel, Y Seiya, A Semenov, F Semeria, T Shah, MD Shapiro, PF Shepard, T Shibayama, M Shimojima, M Shochet, A Sidoti, J Siegrist, A Sill, P Sinervo, P Singh, AJ Slaughter, K Sliwa, FD Snider, A Solodsky, J Spalding, T Speer, M Spezziga, P Sphicas, F Spinella, M Spiropulu, L Spiegel, J Steele, A Stefanini, J Strologas, F Strumia, D Stuart, K Sumorok, T Suzuki, T Takano, R Takashima, K Takikawa, P Tamburello, M Tanaka, B Tannenbaum, M Tecchio, RJ Tesarek, PK Teng, K Terashi, S Tether, AS Thompson, E Thomson, R Thurman-Keup, P Tipton, S Tkaczyk, D Toback, K Tollefson, A Tollestrup, D Tonelli, M Tonnesmann, H Toyoda, W Trischuk, JF de Troconiz, J Tseng, D Tsybychev, N Turini, F Ukegawa, T Vaiciulis, J Valls, E Vataga, S Vejcik, G Velev, G Veramendi, R Vidal, I Vila, R Vilar, I Volobouev, M von der Mey, D Vucinic, RG Wagner, RL Wagner, W Wagner, NB Wallace, Z Wan, C Wang, MJ Wang, SM Wang, B Ward, S Waschke, T Watanabe, D Waters, T Watts, M Weber, H Wenzel, WC Wester, AB Wicklund, E Wicklund, T Wilkes, HH Williams, P Wilson, BL Winer, D Winn, S Wolbers, D Wolinski, J Wolinski, S Wolinski, S Worm, X Wu, J Wyss, UK Yang, W Yao, GP Yeh, P Yeh, K Yi, J Yoh, C Yosef, T Yoshida, I Yu, S Yu, Z Yu, JC Yun, A Zanetti, F Zetti, S Zucchelli, CDF Collaboration

Abstract:

The exclusive gammaE(T) signal has a small standard model cross section and is thus a channel sensitive to new physics. This signature is predicted by models with a superlight gravitino or with large extra spatial dimensions. We search for such signals at the Collider Detector at Fermilab, using 87 pb(-1) of data at square root [s]=1.8 TeV, and extract 95% C.L. limits on these processes. A limit of 221 GeV is set on the scale |F|(1/2) in supersymmetric models. For 4, 6, and 8 extra dimensions, model-dependent limits on the fundamental mass scale M(D) of 0.55, 0.58, and 0.60 TeV, respectively, are found. We also specify a "pseudo-model-independent" method of comparing the results to theoretical predictions.