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Mass and lifetime measurements of bottom and charm baryons in p p ̄ collisions at s =1.96TeV MASS and LIFETIME MEASUREMENTS of BOTTOM and ⋯ T. AALTONEN

  • T. Aaltonen
  • , 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, 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, P. Butti, A. Buzatu, A. Calamba, S. Camarda, M. Campanelli, F. Canelli, B. Carls, D. Carlsmith, R. Carosi, S. Carrillo, 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, K. Cho, D. Chokheli, A. Clark, C. Clarke, M. E. Convery, J. Conway, M. Corbo, M. Cordelli, C. A. Cox, D. J. Cox, M. Cremonesi, D. Cruz, J. Cuevas, R. Culbertson, N. D'Ascenzo, M. Datta, P. De Barbaro, L. Demortier, M. Deninno, M. D'Errico, F. Devoto, A. Di Canto, B. Di Ruzza, J. R. Dittmann, S. Donati, M. D'Onofrio, M. Dorigo, A. Driutti, K. Ebina, R. Edgar, A. Elagin, R. Erbacher, S. Errede, B. Esham, S. Farrington, J. P. Fernández Ramos, R. Field, G. Flanagan, R. Forrest, M. Franklin, J. C. Freeman, H. Frisch, Y. Funakoshi, C. Galloni, A. F. Garfinkel, P. Garosi, H. Gerberich, E. Gerchtein, S. Giagu, V. Giakoumopoulou, K. Gibson, C. M. Ginsburg, N. Giokaris, P. Giromini, G. Giurgiu, V. Glagolev, D. Glenzinski, M. Gold, D. Goldin, A. Golossanov, G. Gomez, G. Gomez-Ceballos, M. Goncharov, O. González López, I. Gorelov, A. T. Goshaw, K. Goulianos, E. Gramellini, S. Grinstein, C. Grosso-Pilcher, R. C. Group, J. Guimaraes Da Costa, S. R. Hahn, J. Y. Han, F. Happacher, K. Hara, M. Hare, R. F. Harr, T. Harrington-Taber, K. Hatakeyama, C. Hays, J. Heinrich, M. Herndon, A. Hocker, Z. Hong, W. Hopkins, S. Hou, R. E. Hughes, U. Husemann, 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, M. Kambeitz, T. Kamon, P. E. Karchin, A. Kasmi, Y. Kato, W. Ketchum, J. Keung, B. Kilminster, D. H. Kim, H. S. Kim, J. E. Kim, M. J. Kim, S. H. Kim, S. B. Kim, Y. J. Kim, Y. K. Kim, N. Kimura, M. Kirby, K. Knoepfel, K. Kondo, D. J. Kong, J. Konigsberg, A. V. Kotwal, M. Kreps, J. Kroll, M. Kruse, T. Kuhr, M. Kurata, A. T. Laasanen, S. Lammel, M. Lancaster, K. Lannon, G. Latino, H. S. Lee, J. S. Lee, S. Leo, S. Leone, J. D. Lewis, A. Limosani, E. Lipeles, A. Lister, H. Liu, Q. Liu, T. Liu, S. Lockwitz, A. Loginov, D. Lucchesi, A. Lucà, J. Lueck, P. Lujan, P. Lukens, G. Lungu, J. Lys, R. Lysak, R. Madrak, P. Maestro, S. Malik, G. Manca, A. Manousakis-Katsikakis, L. Marchese, F. Margaroli, P. Marino, M. Martínez, K. Matera, M. E. Mattson, A. Mazzacane, P. Mazzanti, R. McNulty, A. Mehta, P. Mehtala, C. Mesropian, T. Miao, D. Mietlicki, A. Mitra, H. Miyake, S. Moed, N. Moggi, C. S. Moon, R. Moore, M. J. Morello, A. Mukherjee, Th Muller, P. Murat, M. Mussini, J. Nachtman, Y. Nagai, J. Naganoma, I. Nakano, A. Napier, J. Nett, C. Neu, T. Nigmanov, L. Nodulman, S. Y. Noh, O. Norniella, L. Oakes, S. H. Oh, Y. D. Oh, I. Oksuzian, T. Okusawa, R. Orava, L. Ortolan, C. Pagliarone, E. Palencia, P. Palni, V. Papadimitriou, W. Parker, G. Pauletta, M. Paulini, C. Paus, T. J. Phillips, G. Piacentino, E. Pianori, J. Pilot, K. Pitts, C. Plager, L. Pondrom, S. Poprocki, K. Potamianos, A. Pranko, F. Prokoshin, F. Ptohos, G. Punzi, N. Ranjan, I. Redondo Fernández, P. Renton, M. Rescigno, F. Rimondi, L. Ristori, A. Robson, T. Rodriguez, S. Rolli, M. Ronzani, R. Roser, J. L. Rosner, F. Ruffini, A. Ruiz, J. Russ, V. Rusu, W. K. Sakumoto, Y. Sakurai, L. Santi, K. Sato, V. Saveliev, A. Savoy-Navarro, P. Schlabach, E. E. Schmidt, T. Schwarz, L. Scodellaro, 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, K. Sliwa, J. R. Smith, F. D. Snider, H. Song, V. Sorin, R. St. Denis, M. Stancari, D. Stentz, J. Strologas, Y. Sudo, A. Sukhanov, I. Suslov, K. Takemasa, Y. Takeuchi, J. Tang, M. Tecchio, P. K. Teng, J. Thom, E. Thomson, V. Thukral, D. Toback, S. Tokar, K. Tollefson, T. Tomura, D. Tonelli, S. Torre, D. Torretta, P. Totaro, M. Trovato, F. Ukegawa, S. Uozumi, G. Velev, C. Vellidis, C. Vernieri, M. Vidal, R. Vilar, J. Vizán, M. Vogel, G. Volpi, F. Vázquez, P. Wagner, R. Wallny, S. M. Wang, D. Waters, W. C. Wester, D. Whiteson, A. B. Wicklund, S. Wilbur, 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, A. M. Zanetti, Y. Zeng, C. Zhou, S. Zucchelli
  • University of Helsinki
  • National Institute for Nuclear Physics
  • University of Padua
  • University of Michigan, Ann Arbor
  • Fermi National Accelerator Laboratory
  • Comenius University
  • Slovak Academy of Sciences
  • Waseda University
  • Joint Institute for Nuclear Research
  • Texas A&M University
  • Argonne National Laboratory
  • University of Oxford
  • Kyungpook National University
  • Lawrence Berkeley National Laboratory
  • Purdue University
  • Johns Hopkins University
  • University of Siena
  • University of Pisa
  • University of Wisconsin-Madison
  • Duke University
  • Rockefeller University
  • Baylor University
  • University of Rochester
  • University of Pittsburgh
  • The University of Chicago
  • University of Bologna
  • Michigan State University
  • University of Glasgow
  • Carnegie Mellon University
  • Autonomous University of Barcelona
  • University College London
  • University of Illinois at Urbana-Champaign
  • University of Florida
  • Universidad de Cantabria
  • Harvard University
  • Gruppo Collegato di Udine
  • University of Udine
  • Academia Sinica - Institute of Physics
  • University of California at Davis
  • Seoul National University
  • Sungkyunkwan University
  • Korea Institute of Science and Technology Information
  • Chonnam National University
  • Jeonbuk National University
  • Ewha Womans University
  • University of Geneva
  • Wayne State University
  • University of Liverpool
  • University of Trieste
  • CIEMAT
  • National and Kapodistrian University of Athens
  • University of New Mexico
  • Massachusetts Institute of Technology
  • University of Virginia
  • University of Tsukuba
  • Tufts University
  • University of Pennsylvania
  • Ohio State University
  • Yale University
  • University of Pavia
  • University of Rome La Sapienza
  • Karlsruhe Institute of Technology
  • Osaka Metropolitan University
  • Scuola Normale Superiore di Pisa
  • Okayama University
  • University of California at Los Angeles
  • Alikhanov Institute for Theoretical and Experimental Physics

Research output: Contribution to journalArticlepeer-review

44 Scopus citations

Abstract

We report on mass and lifetime measurements of several ground state charmed and bottom baryons, using a data sample corresponding to 9.6fb-1 from pp̄ collisions at s=1.96TeV and recorded with the Collider Detector at Fermilab. Baryon candidates are reconstructed from data collected with an online event selection designed for the collection of long-lifetime heavy-flavor decay products and a second event selection designed to collect J/ ψ→μ+μ- candidates. First evidence for the process Ωb-→Ωc0π- is presented with a significance of 3.3σ. We measure the following baryon masses: M(Ξc0)=2470.85±0.24(stat) ±0.55(syst)MeV/c2,M(Ξc+)=2468.00±0.18(stat)±0.51(syst) MeV/c2,M(Λb)=5620.15±0.31(stat)±0.47(syst)MeV/c2,M(Ξb-)= 5793.4±1.8(stat)±0.7(syst)MeV/c2,M(Ξb0)=5788.7±4.3(stat) ±1.4(syst)MeV/c2,andM(Ωb-)=6047.5±3.8(stat)±0.6(syst) MeV/c2.The isospin splitting of the Ξb-,0 states is found to be M(Ξb-)-M(Ξb0)=4.7±4.7(stat)±0.7(syst)MeV/c2. The isospin splitting of the Ξc0,+ states is found to be M(Ξc0)-M(Ξc+)=2. 85±0.30(stat)±0.04(syst)MeV/c2. The following lifetime measurements are made: τ(Λb)=1.565±0.035(stat)±0. 020(syst)ps,τ(Ξb-)=1.32±0.14(stat)±0.02(syst)ps, τ(Ωb-)=1.66-0.40+0.53(stat)±0.02(syst)ps.

Original languageEnglish
Article number072014
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume89
Issue number7
DOIs
StatePublished - 22 Apr 2014

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