Measurements of the angular distributions of muons from Υ decays in pp collisions at sqrt[s] = 1.96 TeV

T Aaltonen; B Álvarez González; S Amerio; D Amidei; A Anastassov; A Annovi; J Antos; G Apollinari; J A Appel; T Arisawa; A Artikov; J Asaadi; W Ashmanskas; B Auerbach; A Aurisano; F Azfar; W Badgett; T Bae; A Barbaro-Galtieri; V E Barnes; B A Barnett; P Barria; P Bartos; M Bauce; F Bedeschi; S Behari; G Bellettini; J Bellinger; D Benjamin; A Beretvas; A Bhatti; D Bisello; I Bizjak; K R Bland; B Blumenfeld; A Bocci; A Bodek; D Bortoletto; J Boudreau; A Boveia; L Brigliadori; C Bromberg; E Brucken; J Budagov; H S Budd; K Burkett; G Busetto; P Bussey; A Buzatu; A Calamba; C Calancha; S Camarda; M Campanelli; M Campbell; F Canelli; B Carls; D Carlsmith; R Carosi; S Carrillo; S Carron; B Casal; M Casarsa; A Castro; P Catastini; D Cauz; V Cavaliere; M Cavalli-Sforza; A Cerri; L Cerrito; Y C Chen; M Chertok; G Chiarelli; G Chlachidze; F Chlebana; K Cho; D Chokheli; W H Chung; Y S Chung; M A Ciocci; A Clark; C Clarke; G Compostella; M E Convery; J Conway; M Corbo; M Cordelli; C A Cox; D J Cox; F Crescioli; J Cuevas; R Culbertson; D Dagenhart; N d'Ascenzo; M Datta; P de Barbaro; M Dell'Orso; L Demortier; M Deninno; F Devoto; M d'Errico; A Di Canto; B Di Ruzza; J R Dittmann; M D'Onofrio; S Donati; P Dong; M Dorigo; T Dorigo; K Ebina; A Elagin; A Eppig; R Erbacher; S Errede; N Ershaidat; R Eusebi; S Farrington; M Feindt; J P Fernandez; R Field; G Flanagan; R Forrest; M J Frank; M Franklin; J C Freeman; Y Funakoshi; I Furic; M Gallinaro; J E Garcia; A F Garfinkel; P Garosi; H Gerberich; E Gerchtein; S Giagu; V Giakoumopoulou; P Giannetti; K Gibson; C M Ginsburg; N Giokaris; P Giromini; G Giurgiu; V Glagolev; D Glenzinski; M Gold; D Goldin; N Goldschmidt; A Golossanov; G Gomez; G Gomez-Ceballos; M Goncharov; O González; I Gorelov; A T Goshaw; K Goulianos; S Grinstein; C Grosso-Pilcher; R C Group; J Guimaraes da Costa; S R Hahn; E Halkiadakis; A Hamaguchi; J Y Han; F Happacher; K Hara; D Hare; M Hare; R F Harr; K Hatakeyama; C Hays; M Heck; J Heinrich; M Herndon; S Hewamanage; A Hocker; W Hopkins; D Horn; S Hou; R E Hughes; M Hurwitz; U Husemann; N Hussain; M Hussein; J Huston; G Introzzi; M Iori; A Ivanov; E James; D Jang; B Jayatilaka; E J Jeon; S Jindariani; M Jones; K K Joo; S Y Jun; T R Junk; T Kamon; P E Karchin; A Kasmi; Y Kato; W Ketchum; J Keung; 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; Y J Kim; N Kimura; M Kirby; S Klimenko; K Knoepfel; K Kondo; D J Kong; J Konigsberg; A V Kotwal; M Kreps; J Kroll; D Krop; M Kruse; V Krutelyov; T Kuhr; M Kurata; S Kwang; A T Laasanen; S Lami; S Lammel; M Lancaster; R L Lander; K Lannon; A Lath; G Latino; T LeCompte; E Lee; H S Lee; J S Lee; S W Lee; S Leo; S Leone; J D Lewis; A Limosani; C-J Lin; M Lindgren; E Lipeles; A Lister; D O Litvintsev; C Liu; H Liu; Q Liu; T Liu; S Lockwitz; A Loginov; D Lucchesi; J Lueck; P Lujan; P Lukens; G Lungu; J Lys; R Lysak; R Madrak; K Maeshima; P Maestro; S Malik; G Manca; A Manousakis-Katsikakis; F Margaroli; C Marino; M Martínez; P Mastrandrea; K Matera; M E Mattson; A Mazzacane; P Mazzanti; K S McFarland; P McIntyre; R McNulty; A Mehta; P Mehtala; C Mesropian; T Miao; D Mietlicki; A Mitra; H Miyake; S Moed; N Moggi; M N Mondragon; C S Moon; R Moore; M J Morello; J Morlock; P Movilla Fernandez; A Mukherjee; Th Muller; P Murat; M Mussini; J Nachtman; Y Nagai; J Naganoma; I Nakano; A Napier; J Nett; C Neu; M S Neubauer; J Nielsen; L Nodulman; S Y Noh; O Norniella; L Oakes; S H Oh; Y D Oh; I Oksuzian; T Okusawa; R Orava; L Ortolan; S Pagan Griso; C Pagliarone; E Palencia; V Papadimitriou; A A Paramonov; J Patrick; G Pauletta; M Paulini; C Paus; D E Pellett; A Penzo; T J Phillips; G Piacentino; E Pianori; J Pilot; K Pitts; C Plager; L Pondrom; S Poprocki; K Potamianos; F Prokoshin; A Pranko; F Ptohos; G Punzi; A Rahaman; V Ramakrishnan; N Ranjan; I Redondo; P Renton; M Rescigno; T Riddick; F Rimondi; L Ristori; A Robson; T Rodrigo; T Rodriguez; E Rogers; S Rolli; R Roser; F Ruffini; A Ruiz; J Russ; V Rusu; A Safonov; W K Sakumoto; Y Sakurai; L Santi; K Sato; V Saveliev; A Savoy-Navarro; P Schlabach; A Schmidt; E E Schmidt; T Schwarz; L Scodellaro; A Scribano; F Scuri; S Seidel; Y Seiya; A Semenov; F Sforza; S Z Shalhout; T Shears; P F Shepard; M Shimojima; M Shochet; I Shreyber-Tecker; A Simonenko; P Sinervo; K Sliwa; J R Smith; F D Snider; A Soha; V Sorin; H Song; P Squillacioti; M Stancari; R St Denis; B Stelzer; O Stelzer-Chilton; D Stentz; J Strologas; G L Strycker; Y Sudo; A Sukhanov; I Suslov; K Takemasa; Y Takeuchi; J Tang; M Tecchio; P K Teng; J Thom; J Thome; G A Thompson; E Thomson; D Toback; S Tokar; K Tollefson; T Tomura; D Tonelli; S Torre; D Torretta; P Totaro; M Trovato; F Ukegawa; S Uozumi; A Varganov; F Vázquez; G Velev; C Vellidis; M Vidal; I Vila; R Vilar; J Vizán; M Vogel; G Volpi; P Wagner; R L Wagner; T Wakisaka; R Wallny; S M Wang; A Warburton; D Waters; W C Wester 3rd; D Whiteson; A B Wicklund; E Wicklund; S Wilbur; F Wick; H H Williams; J S Wilson; P Wilson; B L Winer; P Wittich; S Wolbers; H Wolfe; T Wright; X Wu; Z Wu; K Yamamoto; D Yamato; T Yang; U K Yang; Y C Yang; W-M Yao; G P Yeh; K Yi; J Yoh; K Yorita; T Yoshida; G B Yu; I Yu; S S Yu; J C Yun; A Zanetti; Y Zeng; C Zhou; S Zucchelli; CDF Collaboration

doi:10.1103/PhysRevLett.108.151802

Measurements of the angular distributions of muons from Υ decays in pp collisions at sqrt[s] = 1.96 TeV

Phys Rev Lett. 2012 Apr 13;108(15):151802. doi: 10.1103/PhysRevLett.108.151802. Epub 2012 Apr 11.

Authors

T Aaltonen¹, B Álvarez González, S Amerio, D Amidei, A Anastassov, A Annovi, J Antos, G Apollinari, J A Appel, T Arisawa, A Artikov, J Asaadi, W Ashmanskas, B Auerbach, A Aurisano, F Azfar, W Badgett, T Bae, A Barbaro-Galtieri, V E Barnes, B A Barnett, P Barria, P Bartos, M Bauce, F Bedeschi, S Behari, G Bellettini, J Bellinger, D Benjamin, A Beretvas, A Bhatti, D Bisello, I Bizjak, K R Bland, B Blumenfeld, A Bocci, A Bodek, D Bortoletto, J Boudreau, A Boveia, L Brigliadori, C Bromberg, E Brucken, J Budagov, H S Budd, K Burkett, G Busetto, P Bussey, A Buzatu, A Calamba, C Calancha, S Camarda, M Campanelli, M Campbell, F Canelli, B Carls, D Carlsmith, R Carosi, S Carrillo, S Carron, B Casal, M Casarsa, A Castro, P Catastini, D Cauz, V Cavaliere, M Cavalli-Sforza, A Cerri, L Cerrito, Y C Chen, M Chertok, G Chiarelli, G Chlachidze, F Chlebana, K Cho, D Chokheli, W H Chung, Y S Chung, M A Ciocci, A Clark, C Clarke, G Compostella, M E Convery, J Conway, M Corbo, M Cordelli, C A Cox, D J Cox, F Crescioli, J Cuevas, R Culbertson, D Dagenhart, N d'Ascenzo, M Datta, P de Barbaro, M Dell'Orso, L Demortier, M Deninno, F Devoto, M d'Errico, A Di Canto, B Di Ruzza, J R Dittmann, M D'Onofrio, S Donati, P Dong, M Dorigo, T Dorigo, K Ebina, A Elagin, A Eppig, R Erbacher, S Errede, N Ershaidat, R Eusebi, S Farrington, M Feindt, J P Fernandez, R Field, G Flanagan, R Forrest, M J Frank, M Franklin, J C Freeman, Y Funakoshi, I Furic, M Gallinaro, J E Garcia, A F Garfinkel, P Garosi, H Gerberich, E Gerchtein, S Giagu, V Giakoumopoulou, P Giannetti, K Gibson, C M Ginsburg, N Giokaris, P Giromini, G Giurgiu, V Glagolev, D Glenzinski, M Gold, D Goldin, N Goldschmidt, A Golossanov, G Gomez, G Gomez-Ceballos, M Goncharov, O González, I Gorelov, A T Goshaw, K Goulianos, S Grinstein, C Grosso-Pilcher, R C Group, J Guimaraes da Costa, S R Hahn, E Halkiadakis, A Hamaguchi, J Y Han, F Happacher, K Hara, D Hare, M Hare, R F Harr, K Hatakeyama, C Hays, M Heck, J Heinrich, M Herndon, S Hewamanage, A Hocker, W Hopkins, D Horn, S Hou, R E Hughes, M Hurwitz, U Husemann, N Hussain, M Hussein, J Huston, G Introzzi, M Iori, A Ivanov, E James, D Jang, B Jayatilaka, E J Jeon, S Jindariani, M Jones, K K Joo, S Y Jun, T R Junk, T Kamon, P E Karchin, A Kasmi, Y Kato, W Ketchum, J Keung, 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, Y J Kim, N Kimura, M Kirby, S Klimenko, K Knoepfel, K Kondo, D J Kong, J Konigsberg, A V Kotwal, M Kreps, J Kroll, D Krop, M Kruse, V Krutelyov, T Kuhr, M Kurata, S Kwang, A T Laasanen, S Lami, S Lammel, M Lancaster, R L Lander, K Lannon, A Lath, G Latino, T LeCompte, E Lee, H S Lee, J S Lee, S W Lee, S Leo, S Leone, J D Lewis, A Limosani, C-J Lin, M Lindgren, E Lipeles, A Lister, D O Litvintsev, C Liu, H Liu, Q Liu, T Liu, S Lockwitz, A Loginov, D Lucchesi, J Lueck, P Lujan, P Lukens, G Lungu, J Lys, R Lysak, R Madrak, K Maeshima, P Maestro, S Malik, G Manca, A Manousakis-Katsikakis, F Margaroli, C Marino, M Martínez, P Mastrandrea, K Matera, M E Mattson, A Mazzacane, P Mazzanti, K S McFarland, P McIntyre, R McNulty, A Mehta, P Mehtala, C Mesropian, T Miao, D Mietlicki, A Mitra, H Miyake, S Moed, N Moggi, M N Mondragon, C S Moon, R Moore, M J Morello, J Morlock, P Movilla Fernandez, A Mukherjee, Th Muller, P Murat, M Mussini, J Nachtman, Y Nagai, J Naganoma, I Nakano, A Napier, J Nett, C Neu, M S Neubauer, J Nielsen, L Nodulman, S Y Noh, O Norniella, L Oakes, S H Oh, Y D Oh, I Oksuzian, T Okusawa, R Orava, L Ortolan, S Pagan Griso, C Pagliarone, E Palencia, V Papadimitriou, A A Paramonov, J Patrick, G Pauletta, M Paulini, C Paus, D E Pellett, A Penzo, T J Phillips, G Piacentino, E Pianori, J Pilot, K Pitts, C Plager, L Pondrom, S Poprocki, K Potamianos, F Prokoshin, A Pranko, F Ptohos, G Punzi, A Rahaman, V Ramakrishnan, N Ranjan, I Redondo, P Renton, M Rescigno, T Riddick, F Rimondi, L Ristori, A Robson, T Rodrigo, T Rodriguez, E Rogers, S Rolli, R Roser, F Ruffini, A Ruiz, J Russ, V Rusu, A Safonov, W K Sakumoto, Y Sakurai, L Santi, K Sato, V Saveliev, A Savoy-Navarro, P Schlabach, A Schmidt, E E Schmidt, T Schwarz, L Scodellaro, A Scribano, F Scuri, S Seidel, Y Seiya, A Semenov, F Sforza, S Z Shalhout, T Shears, P F Shepard, M Shimojima, M Shochet, I Shreyber-Tecker, A Simonenko, P Sinervo, K Sliwa, J R Smith, F D Snider, A Soha, V Sorin, H Song, P Squillacioti, M Stancari, R St Denis, B Stelzer, O Stelzer-Chilton, D Stentz, J Strologas, G L Strycker, Y Sudo, A Sukhanov, I Suslov, K Takemasa, Y Takeuchi, J Tang, M Tecchio, P K Teng, J Thom, J Thome, G A Thompson, E Thomson, D Toback, S Tokar, K Tollefson, T Tomura, D Tonelli, S Torre, D Torretta, P Totaro, M Trovato, F Ukegawa, S Uozumi, A Varganov, F Vázquez, G Velev, C Vellidis, M Vidal, I Vila, R Vilar, J Vizán, M Vogel, G Volpi, P Wagner, R L Wagner, T Wakisaka, R Wallny, S M Wang, A Warburton, D Waters, W C Wester 3rd, D Whiteson, A B Wicklund, E Wicklund, S Wilbur, F Wick, H H Williams, J S Wilson, P Wilson, B L Winer, P Wittich, S Wolbers, H Wolfe, T Wright, X Wu, Z Wu, K Yamamoto, D Yamato, T Yang, U K Yang, Y C Yang, W-M Yao, G P Yeh, K Yi, J Yoh, K Yorita, T Yoshida, G B Yu, I Yu, S S Yu, J C Yun, A Zanetti, Y Zeng, C Zhou, S Zucchelli; CDF Collaboration

Affiliation

¹ Division of High Energy Physics, Department of Physics, University of Helsinki and Helsinki Institute of Physics, FIN-00014, Helsinki, Finland.

PMID: 22587242
DOI: 10.1103/PhysRevLett.108.151802

Abstract

The angular distributions of muons from Υ(1S,2S,3S) → μ+ μ- decays are measured using data from pp collisions at sqrt[s] = 1.96 TeV corresponding to an integrated luminosity of 6.7 fb(-1) and collected with the CDF II detector at the Fermilab Tevatron. This analysis is the first to report the full angular distributions as functions of transverse momentum p(T) for Υ mesons in both the Collins-Soper and s-channel helicity frames. This is also the first measurement of the spin alignment of Υ(3S) mesons. Within the kinematic range of Υ rapidity |y|<0.6 and p(T) up to 40 GeV/c, the angular distributions are found to be nearly isotropic.