Measurements of bottom-antibottom azimuthal production correlations in proton-antiproton collisions at root s=1.8 TeV Academic Article uri icon

abstract

  • We have measured the azimuthal angular correlation of bb production, using 86.5pb-1 of data collected by Collider Detector at Fermilab (CDF) in pp collisions at s=1.8TeV during 1994-1995. In high-energy pp collisions, such as at the Tevatron, bb production can be schematically categorized into three mechanisms. The leading-order (LO) process is "flavor creation," where both b and b quarks substantially participate in the hard scattering and result in a distinct back-to-back signal in final state. The "flavor excitation" and the "gluon splitting" processes, which appear at next-leading-order (NLO), are known to make a comparable contribution to total bb cross section, while providing very different opening angle distributions from the LO process. An azimuthal opening angle between bottom and antibottom, , has been used for the correlation measurement to probe the interaction creating bb pairs. The distribution has been obtained from two different methods. One method measures the between bottom hadrons using events with two reconstructed secondary vertex tags. The other method uses bb(J/ X)(X) events, where the charged lepton () is an electron (e) or a muon (), to measure between bottom quarks. The bb purity is determined as a function of by fitting the decay length of the J/ and the impact parameter of the. Both methods quantify the contribution from higher-order production mechanisms by the fraction of the bb pairs produced in the same azimuthal hemisphere, ftoward. The measured ftoward values are consistent with both parton shower Monte Carlo and NLO QCD predictions. 2005 The American Physical Society.

published proceedings

  • PHYSICAL REVIEW D

author list (cited authors)

  • Acosta, D., Affolder, T., Albrow, M. G., Ambrose, D., Amidei, D., Anikeev, K., ... Zucchelli, S.

citation count

  • 25

complete list of authors

  • Acosta, D||Affolder, T||Albrow, MG||Ambrose, D||Amidei, D||Anikeev, K||Antos, J||Apollinari, G||Arisawa, T||Artikov, A||Ashmanskas, W||Azfar, F||Azzi-Bacchetta, P||Bacchetta, N||Bachacou, H||Badgett, W||Barbaro-Galtieri, A||Barnes, VE||Barnett, BA||Baroiant, S||Barone, M||Bauer, G||Bedeschi, F||Behari, S||Belforte, S||Bell, WH||Bellettini, G||Bellinger, J||Benjamin, D||Beretvas, A||Bhatti, A||Binkley, M||Bisello, D||Bishai, M||Blair, RE||Blocker, C||Bloom, K||Blumenfeld, B||Bocci, A||Bodek, A||Bolla, G||Bolshov, A||Bortoletto, D||Boudreau, J||Bromberg, C||Brubaker, E||Budagov, J||Budd, HS||Burkett, K||Busetto, G||Byrum, KL||Cabrera, S||Campbell, M||Carithers, W||Carlsmith, D||Castro, A||Cauz, D||Cerri, A||Cerrito, L||Chapman, J||Chen, C||Chen, YC||Chertok, M||Chiarelli, G||Chlachidze, G||Chlebana, F||Chu, ML||Chung, JY||Chung, WH||Chung, YS||Ciobanu, CI||Clark, AG||Coca, M||Connolly, A||Convery, M||Conway, J||Cordelli, M||Cranshaw, J||Culbertson, R||Dagenhart, D||D'Auria, S||de Barbaro, P||Cecco, SD||Dell'Agnello, S||Dell'Orso, M||Demers, S||Demortier, L||Deninno, M||Pedis, DD||Derwent, PF||Dionisi, C||Dittmann, JR||Dominguez, A||Donati, S||D'Onofrio, M||Dorigo, T||Eddy, N||Erbacher, R||Errede, D||Errede, S||Eusebi, R||Farrington, S||Feild, RG||Fernandez, JP||Ferretti, C||Field, RD||Fiori, I||Flaugher, B||Flores-Castillo, LR||Foster, GW||Franklin, M||Friedman, J||Furic, I||Gallinaro, M||Garcia-Sciveres, M||Garfinkel, AF||Gay, C||Gerdes, DW||Gerstein, E||Giagu, S||Giannetti, P||Giolo, K||Giordani, M||Giromini, P||Glagolev, V||Glenzinski, D||Gold, M||Goldschmidt, N||Goldstein, J||Gomez, G||Goncharov, M||Gorelov, I||Goshaw, AT||Gotra, Y||Goulianos, K||Gresele, A||Grosso-Pilcher, C||Guenther, M||da Costa, JG||Haber, C||Hahn, SR||Halkiadakis, E||Handler, R||Happacher, F||Hara, K||Harris, RM||Hartmann, F||Hatakeyama, K||Hauser, J||Heinrich, J||Hennecke, M||Herndon, M||Hill, C||Hocker, A||Hoffman, KD||Hou, S||Huffman, BT||Hughes, R||Huston, J||Issever, C||Incandela, J||Introzzi, G||Iori, M||Ivanov, A||Iwata, Y||Iyutin, B||James, E||Jones, M||Kamon, T||Kang, J||Unel, MK||Kartal, S||Kasha, H||Kato, Y||Kennedy, RD||Kephart, R||Kilminster, B||Kim, DH||Kim, HS||Kim, MJ||Kim, SB||Kim, SH||Kim, TH||Kim, YK||Kirby, M||Kirsch, L||Klimenko, S||Koehn, P||Kondo, K||Konigsberg, J||Korn, A||Korytov, A||Kroll, J||Kruse, M||Krutelyov, V||Kuhlmann, SE||Kuznetsova, N||Laasanen, AT||Lami, S||Lammel, S||Lancaster, J||Lannon, K||Lancaster, M||Lander, R||Lath, A||Latino, G||LeCompte, T||Le, Y||Lee, J||Lee, SW||Leonardo, N||Leone, S||Lewis, JD||Li, K||Lin, CS||Lindgren, M||Liss, TM||Liu, T||Litvintsev, DO||Lockyer, NS||Loginov, A||Loreti, M||Lucchesi, D||Lukens, P||Lyons, L||Lys, J||Madrak, R||Maeshima, K||Maksimovic, P||Malferrari, L||Mangano, M||Manca, G||Mariotti, M||Martin, M||Martin, A||Martin, V||Martinez, M||Mazzanti, P||McFarland, KS||McIntyre, P||Menguzzato, M||Menzione, A||Merkel, P||Mesropian, C||Meyer, A||Miao, T||Miller, R||Miller, JS||Miscetti, S||Mitselmakher, G||Moggi, N||Moore, R||Moulik, T||Mulhearn, M||Mukherjee, A||Muller, T||Munar, A||Murat, P||Nachtman, J||Nahn, S||Nakano, I||Napora, R||Niell, F||Nelson, C||Nelson, T||Neu, C||Neubauer, MS||Newman-Holmes, C||Nigmanov, T||Nodulman, L||Oh, SH||Oh, YD||Ohsugi, T||Okusawa, T||Orejudos, W||Pagliarone, C||Palmonari, F||Paoletti, R||Papadimitriou, V||Patrick, J||Pauletta, G||Paulini, M||Pauly, T||Paus, C||Pellett, D||Penzo, A||Phillips, TJ||Piacentino, G||Piedra, J||Pitts, KT||Pompos, A||Pondrom, L||Pope, G||Pratt, T||Prokoshin, F||Proudfoot, J||Ptohos, F||Poukhov, O||Punzi, G||Rademacker, J||Rakitine, A||Ratnikov, F||Ray, H||Reichold, A||Renton, P||Rescigno, M||Rimondi, F||Ristori, L||Robertson, WJ||Rodrigo, T||Rolli, S||Rosenson, L||Roser, R||Rossin, R||Rott, C||Roy, A||Ruiz, A||Ryan, D||Safonov, A||Denis, RS||Sakumoto, WK||Saltzberg, D||Sanchez, C||Sansoni, A||Santi, L||Sarkar, S||Savard, P||Savoy-Navarro, A||Schlabach, P||Schmidt, EE||Schmidt, MP||Schmitt, M||Scodellaro, L||Scribano, A||Sedov, A||Seidel, S||Seiya, Y||Semenov, A||Semeria, F||Shapiro, MD||Shepard, PF||Shibayama, T||Shimojima, M||Shochet, M||Sidoti, A||Sill, A||Sinervo, P||Slaughter, AJ||Sliwa, K||Snider, FD||Snihur, R||Spezziga, M||Spinella, F||Spiropulu, M||Spiegel, L||Stefanini, A||Strologas, J||Stuart, D||Sukhanov, A||Sumorok, K||Suzuki, T||Takashima, R||Takikawa, K||Tanaka, M||Tecchio, M||Tesarek, RJ||Teng, PK||Terashi, K||Tether, S||Thom, J||Thompson, AS||Thomson, E||Tipton, P||Tkaczyk, S||Toback, D||Tollefson, K||Tonelli, D||Tonnesmann, M||Toyoda, H||Trischuk, W||Tseng, J||Tsybychev, D||Turini, N||Ukegawa, F||Unverhau, T||Vaiciulis, T||Varganov, A||Vataga, E||Vejcik, S||Velev, G||Veramendi, G||Vidal, R||Vila, I||Vilar, R||Volobouev, I||von der Mey, M||Wagner, RG||Wagner, RL||Wagner, W||Wan, Z||Wang, C||Wang, MJ||Wang, SM||Ward, B||Waschke, S||Waters, D||Watts, T||Weber, M||Wester, WC||Whitehouse, B||Wicklund, AB||Wicklund, E||Williams, HH||Wilson, P||Winer, BL||Wolbers, S||Wolter, M||Worm, S||Wu, X||Wurthwein, F||Yang, UK||Yao, W||Yeh, GP||Yi, K||Yoh, J||Yoshida, T||Yu, I||Yu, S||Yun, JC||Zanello, L||Zanetti, A||Zetti, F||Zucchelli, S

publication date

  • May 2005