Measurement of sigma chi c2 B(chi c2-->J/psi gamma)/sigma chi c1 B(chi c1 -->J/psi gamma) in pp collisions at square root s=1.96 TeV

A Abulencia; J Adelman; T Affolder; T Akimoto; M G Albrow; D Ambrose; S Amerio; D Amidei; A Anastassov; K Anikeev; A Annovi; J Antos; M Aoki; G Apollinari; J-F Arguin; T Arisawa; A Artikov; W Ashmanskas; A Attal; F Azfar; P Azzi-Bacchetta; P Azzurri; N Bacchetta; W Badgett; A Barbaro-Galtieri; V E Barnes; B A Barnett; S Baroiant; V Bartsch; G Bauer; F Bedeschi; S Behari; S Belforte; G Bellettini; J Bellinger; A Belloni; D Benjamin; A Beretvas; J Beringer; T Berry; A Bhatti; M Binkley; D Bisello; R E Blair; C Blocker; B Blumenfeld; A Bocci; A Bodek; V Boisvert; G Bolla; A Bolshov; D Bortoletto; J Boudreau; A Boveia; B Brau; L Brigliadori; C Bromberg; E Brubaker; J Budagov; H S Budd; S Budd; S Budroni; K Burkett; G Busetto; P Bussey; K L Byrum; S Cabrera; M Campanelli; M Campbell; F Canelli; A Canepa; S Carillo; D Carlsmith; R Carosi; S Carron; M Casarsa; A Castro; P Catastini; D Cauz; M Cavalli-Sforza; A Cerri; L Cerrito; S H Chang; Y C Chen; M Chertok; G Chiarelli; G Chlachidze; F Chlebana; I Cho; K Cho; D Chokheli; J P Chou; G Choudalakis; S H Chuang; K Chung; W H Chung; Y S Chung; M Ciljak; C I Ciobanu; M A Ciocci; A Clark; D Clark; M Coca; G Compostella; M E Convery; J Conway; B Cooper; K Copic; M Cordelli; G Cortiana; F Crescioli; C Cuenca Almenar; J Cuevas; R Culbertson; J C Cully; D Cyr; S DaRonco; M Datta; S D'Auria; T Davies; M D'Onofrio; D Dagenhart; P de Barbaro; S De Cecco; A Deisher; G De Lentdecker; M Dell'Orso; F Delli Paoli; L Demortier; J Deng; M Deninno; D De Pedis; P F Derwent; G P Di Giovanni; C Dionisi; B Di Ruzza; J R Dittmann; P DiTuro; C Dörr; S Donati; M Donega; P Dong; J Donini; T Dorigo; S Dube; J Efron; R Erbacher; D Errede; S Errede; R Eusebi; H C Fang; S Farrington; I Fedorko; W T Fedorko; R G Feild; M Feindt; J P Fernandez; R Field; G Flanagan; A Foland; S Forrester; G W Foster; M Franklin; J C Freeman; I Furic; M Gallinaro; J Galyardt; J E Garcia; F Garberson; A F Garfinkel; C Gay; H Gerberich; D Gerdes; S Giagu; P Giannetti; A Gibson; K Gibson; J L Gimmell; C Ginsburg; N Giokaris; M Giordani; P Giromini; M Giunta; G Giurgiu; V Glagolev; D Glenzinski; M Gold; N Goldschmidt; J Goldstein; A Golossanov; G Gomez; G Gomez-Ceballos; M Goncharov; O González; I Gorelov; A T Goshaw; K Goulianos; A Gresele; M Griffiths; S Grinstein; C Grosso-Pilcher; R C Group; U Grundler; J Guimaraes da Costa; Z Gunay-Unalan; C Haber; K Hahn; S R Hahn; E Halkiadakis; A Hamilton; B-Y Han; J Y Han; R Handler; F Happacher; K Hara; M Hare; S Harper; R F Harr; R M Harris; M Hartz; K Hatakeyama; J Hauser; A Heijboer; B Heinemann; J Heinrich; C Henderson; M Herndon; J Heuser; D Hidas; C S Hill; D Hirschbuehl; A Hocker; A Holloway; S Hou; M Houlden; S-C Hsu; B T Huffman; R E Hughes; U Husemann; J Huston; J Incandela; G Introzzi; M Iori; Y Ishizawa; A Ivanov; B Iyutin; E James; D Jang; B Jayatilaka; D Jeans; H Jensen; E J Jeon; S Jindariani; M Jones; K K Joo; S Y Jun; J E Jung; T R Junk; T Kamon; P E Karchin; Y Kato; Y Kemp; R Kephart; U Kerzel; V Khotilovich; B Kilminster; D H Kim; H S Kim; J E Kim; M J Kim; S B Kim; S H Kim; Y K Kim; N Kimura; L Kirsch; S Klimenko; M Klute; B Knuteson; B R Ko; K Kondo; D J Kong; J Konigsberg; A Korytov; A V Kotwal; A Kovalev; A C Kraan; J Kraus; I Kravchenko; M Kreps; J Kroll; N Krumnack; M Kruse; V Krutelyov; T Kubo; S E Kuhlmann; T Kuhr; Y Kusakabe; S Kwang; A T Laasanen; S Lai; S Lami; S Lammel; M Lancaster; R L Lander; K Lannon; A Lath; G Latino; I Lazzizzera; T LeCompte; J Lee; J Lee; Y J Lee; S W Lee; R Lefèvre; N Leonardo; S Leone; S Levy; J D Lewis; C Lin; C S Lin; M Lindgren; E Lipeles; A Lister; D O Litvintsev; T Liu; N S Lockyer; A Loginov; M Loreti; P Loverre; R-S Lu; D Lucchesi; P Lujan; P Lukens; G Lungu; L Lyons; J Lys; R Lysak; E Lytken; P Mack; D MacQueen; R Madrak; K Maeshima; K Makhoul; T Maki; P Maksimovic; S Malde; G Manca; F Margaroli; R Marginean; C Marino; C P Marino; A Martin; M Martin; V Martin; M Martínez; T Maruyama; P Mastrandrea; T Masubuchi; H Matsunaga; M E Mattson; R Mazini; P Mazzanti; K S McFarland; P McIntyre; R McNulty; A Mehta; P Mehtala; S Menzemer; A Menzione; P Merkel; C Mesropian; A Messina; T Miao; N Miladinovic; J Miles; R Miller; C Mills; M Milnik; A Mitra; G Mitselmakher; A Miyamoto; S Moed; N Moggi; B Mohr; R Moore; M Morello; P Movilla Fernandez; J Mülmenstädt; A Mukherjee; Th Muller; R Mumford; P Murat; J Nachtman; A Nagano; J Naganoma; I Nakano; A Napier; V Necula; C Neu; M S Neubauer; J Nielsen; T Nigmanov; L Nodulman; O Norniella; E Nurse; S H Oh; Y D Oh; I Oksuzian; T Okusawa; R Oldeman; R Orava; K Osterberg; C Pagliarone; E Palencia; V Papadimitriou; A A Paramonov; B Parks; S Pashapour; J Patrick; G Pauletta; M Paulini; C Paus; D E Pellett; A Penzo; T J Phillips; G Piacentino; J Piedra; L Pinera; K Pitts; C Plager; L Pondrom; X Portell; O Poukhov; N Pounder; F Prakoshyn; A Pronko; J Proudfoot; F Ptohos; G Punzi; J Pursley; J Rademacker; A Rahaman; N Ranjan; S Rappoccio; B Reisert; V Rekovic; P Renton; M Rescigno; S Richter; F Rimondi; L Ristori; A Robson; T Rodrigo; E Rogers; S Rolli; R Roser; M Rossi; R Rossin; A Ruiz; J Russ; V Rusu; H Saarikko; S Sabik; A Safonov; W K Sakumoto; G Salamanna; O Saltó; D Saltzberg; C Sánchez; L Santi; S Sarkar; L Sartori; K Sato; P Savard; A Savoy-Navarro; T Scheidle; P Schlabach; E E Schmidt; M P Schmidt; M Schmitt; T Schwarz; L Scodellaro; A L Scott; A Scribano; F Scuri; A Sedov; S Seidel; Y Seiya; A Semenov; L Sexton-Kennedy; A Sfyrla; M D Shapiro; T Shears; P F Shepard; D Sherman; M Shimojima; M Shochet; Y Shon; I Shreyber; A Sidoti; P Sinervo; A Sisakyan; J Sjolin; A J Slaughter; J Slaunwhite; K Sliwa; J R Smith; F D Snider; R Snihur; M Soderberg; A Soha; S Somalwar; V Sorin; J Spalding; F Spinella; T Spreitzer; P Squillacioti; M Stanitzki; A Staveris-Polykalas; R St Denis; B Stelzer; O Stelzer-Chilton; D Stentz; J Strologas; D Stuart; J S Suh; A Sukhanov; H Sun; T Suzuki; A Taffard; R Takashima; Y Takeuchi; K Takikawa; M Tanaka; R Tanaka; M Tecchio; P K Teng; K Terashi; J Thom; A S Thompson; E Thomson; P Tipton; V Tiwari; S Tkaczyk; D Toback; S Tokar; K Tollefson; T Tomura; D Tonelli; S Torre; D Torretta; S Tourneur; W Trischuk; R Tsuchiya; S Tsuno; N Turini; F Ukegawa; T Unverhau; S Uozumi; D Usynin; S Vallecorsa; N van Remortel; A Varganov; E Vataga; F Vázquez; G Velev; G Veramendi; V Veszpremi; R Vidal; I Vila; R Vilar; T Vine; I Vollrath; I Volobouev; G Volpi; F Würthwein; P Wagner; R G Wagner; R L Wagner; J Wagner; W Wagner; R Wallny; S M Wang; A Warburton; S Waschke; D Waters; M Weinberger; W C Wester 3rd; B Whitehouse; D Whiteson; A B Wicklund; E Wicklund; G Williams; H H Williams; P Wilson; B L Winer; P Wittich; S Wolbers; C Wolfe; T Wright; X Wu; S M Wynne; A Yagil; K Yamamoto; J Yamaoka; T Yamashita; C Yang; U K Yang; Y C Yang; W M Yao; G P Yeh; J Yoh; K Yorita; T Yoshida; G B Yu; I Yu; S S Yu; J C Yun; L Zanello; A Zanetti; I Zaw; X Zhang; J Zhou; S Zucchelli; CDF Collaboration

doi:10.1103/PhysRevLett.98.232001

Measurement of sigma chi c2 B(chi c2-->J/psi gamma)/sigma chi c1 B(chi c1 -->J/psi gamma) in pp collisions at square root s=1.96 TeV

Phys Rev Lett. 2007 Jun 8;98(23):232001. doi: 10.1103/PhysRevLett.98.232001. Epub 2007 Jun 6.

Authors

A Abulencia¹, J Adelman, T Affolder, T Akimoto, M G Albrow, D Ambrose, S Amerio, D Amidei, A Anastassov, K Anikeev, A Annovi, J Antos, M Aoki, G Apollinari, J-F Arguin, T Arisawa, A Artikov, W Ashmanskas, A Attal, F Azfar, P Azzi-Bacchetta, P Azzurri, N Bacchetta, W Badgett, A Barbaro-Galtieri, V E Barnes, B A Barnett, S Baroiant, V Bartsch, G Bauer, F Bedeschi, S Behari, S Belforte, G Bellettini, J Bellinger, A Belloni, D Benjamin, A Beretvas, J Beringer, T Berry, A Bhatti, M Binkley, D Bisello, R E Blair, C Blocker, B Blumenfeld, A Bocci, A Bodek, V Boisvert, G Bolla, A Bolshov, D Bortoletto, J Boudreau, A Boveia, B Brau, L Brigliadori, C Bromberg, E Brubaker, J Budagov, H S Budd, S Budd, S Budroni, K Burkett, G Busetto, P Bussey, K L Byrum, S Cabrera, M Campanelli, M Campbell, F Canelli, A Canepa, S Carillo, D Carlsmith, R Carosi, S Carron, M Casarsa, A Castro, P Catastini, D Cauz, M Cavalli-Sforza, A Cerri, L Cerrito, S H Chang, Y C Chen, M Chertok, G Chiarelli, G Chlachidze, F Chlebana, I Cho, K Cho, D Chokheli, J P Chou, G Choudalakis, S H Chuang, K Chung, W H Chung, Y S Chung, M Ciljak, C I Ciobanu, M A Ciocci, A Clark, D Clark, M Coca, G Compostella, M E Convery, J Conway, B Cooper, K Copic, M Cordelli, G Cortiana, F Crescioli, C Cuenca Almenar, J Cuevas, R Culbertson, J C Cully, D Cyr, S DaRonco, M Datta, S D'Auria, T Davies, M D'Onofrio, D Dagenhart, P de Barbaro, S De Cecco, A Deisher, G De Lentdecker, M Dell'Orso, F Delli Paoli, L Demortier, J Deng, M Deninno, D De Pedis, P F Derwent, G P Di Giovanni, C Dionisi, B Di Ruzza, J R Dittmann, P DiTuro, C Dörr, S Donati, M Donega, P Dong, J Donini, T Dorigo, S Dube, J Efron, R Erbacher, D Errede, S Errede, R Eusebi, H C Fang, S Farrington, I Fedorko, W T Fedorko, R G Feild, M Feindt, J P Fernandez, R Field, G Flanagan, A Foland, S Forrester, G W Foster, M Franklin, J C Freeman, I Furic, M Gallinaro, J Galyardt, J E Garcia, F Garberson, A F Garfinkel, C Gay, H Gerberich, D Gerdes, S Giagu, P Giannetti, A Gibson, K Gibson, J L Gimmell, C Ginsburg, N Giokaris, M Giordani, P Giromini, M Giunta, G Giurgiu, V Glagolev, D Glenzinski, M Gold, N Goldschmidt, J Goldstein, A Golossanov, G Gomez, G Gomez-Ceballos, M Goncharov, O González, I Gorelov, A T Goshaw, K Goulianos, A Gresele, M Griffiths, S Grinstein, C Grosso-Pilcher, R C Group, U Grundler, J Guimaraes da Costa, Z Gunay-Unalan, C Haber, K Hahn, S R Hahn, E Halkiadakis, A Hamilton, B-Y Han, J Y Han, R Handler, F Happacher, K Hara, M Hare, S Harper, R F Harr, R M Harris, M Hartz, K Hatakeyama, J Hauser, A Heijboer, B Heinemann, J Heinrich, C Henderson, M Herndon, J Heuser, D Hidas, C S Hill, D Hirschbuehl, A Hocker, A Holloway, S Hou, M Houlden, S-C Hsu, B T Huffman, R E Hughes, U Husemann, J Huston, J Incandela, G Introzzi, M Iori, Y Ishizawa, A Ivanov, B Iyutin, E James, D Jang, B Jayatilaka, D Jeans, H Jensen, E J Jeon, S Jindariani, M Jones, K K Joo, S Y Jun, J E Jung, T R Junk, T Kamon, P E Karchin, Y Kato, Y Kemp, R Kephart, U Kerzel, V Khotilovich, B Kilminster, D H Kim, H S Kim, J E Kim, M J Kim, S B Kim, S H Kim, Y K Kim, N Kimura, L Kirsch, S Klimenko, M Klute, B Knuteson, B R Ko, K Kondo, D J Kong, J Konigsberg, A Korytov, A V Kotwal, A Kovalev, A C Kraan, J Kraus, I Kravchenko, M Kreps, J Kroll, N Krumnack, M Kruse, V Krutelyov, T Kubo, S E Kuhlmann, T Kuhr, Y Kusakabe, S Kwang, A T Laasanen, S Lai, S Lami, S Lammel, M Lancaster, R L Lander, K Lannon, A Lath, G Latino, I Lazzizzera, T LeCompte, J Lee, J Lee, Y J Lee, S W Lee, R Lefèvre, N Leonardo, S Leone, S Levy, J D Lewis, C Lin, C S Lin, M Lindgren, E Lipeles, A Lister, D O Litvintsev, T Liu, N S Lockyer, A Loginov, M Loreti, P Loverre, R-S Lu, D Lucchesi, P Lujan, P Lukens, G Lungu, L Lyons, J Lys, R Lysak, E Lytken, P Mack, D MacQueen, R Madrak, K Maeshima, K Makhoul, T Maki, P Maksimovic, S Malde, G Manca, F Margaroli, R Marginean, C Marino, C P Marino, A Martin, M Martin, V Martin, M Martínez, T Maruyama, P Mastrandrea, T Masubuchi, H Matsunaga, M E Mattson, R Mazini, P Mazzanti, K S McFarland, P McIntyre, R McNulty, A Mehta, P Mehtala, S Menzemer, A Menzione, P Merkel, C Mesropian, A Messina, T Miao, N Miladinovic, J Miles, R Miller, C Mills, M Milnik, A Mitra, G Mitselmakher, A Miyamoto, S Moed, N Moggi, B Mohr, R Moore, M Morello, P Movilla Fernandez, J Mülmenstädt, A Mukherjee, Th Muller, R Mumford, P Murat, J Nachtman, A Nagano, J Naganoma, I Nakano, A Napier, V Necula, C Neu, M S Neubauer, J Nielsen, T Nigmanov, L Nodulman, O Norniella, E Nurse, S H Oh, Y D Oh, I Oksuzian, T Okusawa, R Oldeman, R Orava, K Osterberg, C Pagliarone, E Palencia, V Papadimitriou, A A Paramonov, B Parks, S Pashapour, J Patrick, G Pauletta, M Paulini, C Paus, D E Pellett, A Penzo, T J Phillips, G Piacentino, J Piedra, L Pinera, K Pitts, C Plager, L Pondrom, X Portell, O Poukhov, N Pounder, F Prakoshyn, A Pronko, J Proudfoot, F Ptohos, G Punzi, J Pursley, J Rademacker, A Rahaman, N Ranjan, S Rappoccio, B Reisert, V Rekovic, P Renton, M Rescigno, S Richter, F Rimondi, L Ristori, A Robson, T Rodrigo, E Rogers, S Rolli, R Roser, M Rossi, R Rossin, A Ruiz, J Russ, V Rusu, H Saarikko, S Sabik, A Safonov, W K Sakumoto, G Salamanna, O Saltó, D Saltzberg, C Sánchez, L Santi, S Sarkar, L Sartori, K Sato, P Savard, A Savoy-Navarro, T Scheidle, P Schlabach, E E Schmidt, M P Schmidt, M Schmitt, T Schwarz, L Scodellaro, A L Scott, A Scribano, F Scuri, A Sedov, S Seidel, Y Seiya, A Semenov, L Sexton-Kennedy, A Sfyrla, M D Shapiro, T Shears, P F Shepard, D Sherman, M Shimojima, M Shochet, Y Shon, I Shreyber, A Sidoti, P Sinervo, A Sisakyan, J Sjolin, A J Slaughter, J Slaunwhite, K Sliwa, J R Smith, F D Snider, R Snihur, M Soderberg, A Soha, S Somalwar, V Sorin, J Spalding, F Spinella, T Spreitzer, P Squillacioti, M Stanitzki, A Staveris-Polykalas, R St Denis, B Stelzer, O Stelzer-Chilton, D Stentz, J Strologas, D Stuart, J S Suh, A Sukhanov, H Sun, T Suzuki, A Taffard, R Takashima, Y Takeuchi, K Takikawa, M Tanaka, R Tanaka, M Tecchio, P K Teng, K Terashi, J Thom, A S Thompson, E Thomson, P Tipton, V Tiwari, S Tkaczyk, D Toback, S Tokar, K Tollefson, T Tomura, D Tonelli, S Torre, D Torretta, S Tourneur, W Trischuk, R Tsuchiya, S Tsuno, N Turini, F Ukegawa, T Unverhau, S Uozumi, D Usynin, S Vallecorsa, N van Remortel, A Varganov, E Vataga, F Vázquez, G Velev, G Veramendi, V Veszpremi, R Vidal, I Vila, R Vilar, T Vine, I Vollrath, I Volobouev, G Volpi, F Würthwein, P Wagner, R G Wagner, R L Wagner, J Wagner, W Wagner, R Wallny, S M Wang, A Warburton, S Waschke, D Waters, M Weinberger, W C Wester 3rd, B Whitehouse, D Whiteson, A B Wicklund, E Wicklund, G Williams, H H Williams, P Wilson, B L Winer, P Wittich, S Wolbers, C Wolfe, T Wright, X Wu, S M Wynne, A Yagil, K Yamamoto, J Yamaoka, T Yamashita, C Yang, U K Yang, Y C Yang, W M Yao, G P Yeh, J Yoh, K Yorita, T Yoshida, G B Yu, I Yu, S S Yu, J C Yun, L Zanello, A Zanetti, I Zaw, X Zhang, J Zhou, S Zucchelli; CDF Collaboration

Affiliation

¹ University of Illinois, Urbana, Illinois 61801, USA.

PMID: 17677899
DOI: 10.1103/PhysRevLett.98.232001

Abstract

We measure the ratio of cross section times branching fraction, Rp=sigma chi c2 B(chi c2-->J/psi gamma)/sigma chi c1 B(chi c1-->J/psi gamma), in 1.1 fb(-1) of pp collisions at square root s=1.96 TeV. This measurement covers the kinematic range pT(J/psi)>4.0 GeV/c, |eta(J/psi)<1.0, and pT(gamma)>1.0 GeV/c. For events due to prompt processes, we find Rp=0.395+/-0.016(stat)+/-0.015(syst). This result represents a significant improvement in precision over previous measurements of prompt chi c1,2 hadro production.