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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

Publication ,  Journal Article
Aaltonen, T; Amerio, S; Amidei, D; Anastassov, A; Annovi, A; Antos, J; Apollinari, G; Appel, JA; Arisawa, T; Artikov, A; Asaadi, J; Azfar, F ...
Published in: Physical Review D - Particles, Fields, Gravitation and Cosmology
April 22, 2014
Published version (DOI)

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. © 2014 American Physical Society.

Duke Scholars

Alfred T. Goshaw
Author Alfred T. Goshaw Physics
Ashutosh V. Kotwal
Author Ashutosh V. Kotwal Physics
Mark C. Kruse
Author Mark C. Kruse Physics
Seog Oh
Author Seog Oh Physics
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Published In

Physical Review D - Particles, Fields, Gravitation and Cosmology

DOI

10.1103/PhysRevD.89.072014

EISSN

1550-2368

ISSN

1550-7998

Publication Date

April 22, 2014

Volume

89

Issue

7

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5101 Astronomical sciences
  • 4902 Mathematical physics
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences
 

Citation

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MLA
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Aaltonen, T., Amerio, S., Amidei, D., Anastassov, A., Annovi, A., Antos, J., … Erbacher, R. (2014). 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. Physical Review D - Particles, Fields, Gravitation and Cosmology, 89(7). https://doi.org/10.1103/PhysRevD.89.072014
Aaltonen, T., S. Amerio, D. Amidei, A. Anastassov, A. Annovi, J. Antos, G. Apollinari, et al. “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.” Physical Review D - Particles, Fields, Gravitation and Cosmology 89, no. 7 (April 22, 2014). https://doi.org/10.1103/PhysRevD.89.072014.
Aaltonen T, Amerio S, Amidei D, Anastassov A, Annovi A, Antos J, et al. 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. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2014 Apr 22;89(7).
Aaltonen, T., et al. “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.” Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 89, no. 7, Apr. 2014. Scopus, doi:10.1103/PhysRevD.89.072014.
Aaltonen T, Amerio S, Amidei D, Anastassov A, Annovi A, Antos J, Apollinari G, Appel JA, Arisawa T, Artikov A, Asaadi J, Ashmanskas W, Auerbach B, Aurisano A, Azfar F, Badgett W, Bae T, Barbaro-Galtieri A, Barnes VE, Barnett BA, Barria P, Bartos P, Bauce M, Bedeschi F, Behari S, Bellettini G, Bellinger J, Benjamin D, Beretvas A, Bhatti A, Bland KR, Blumenfeld B, Bocci A, Bodek A, Bortoletto D, Boudreau J, Boveia A, Brigliadori L, Bromberg C, Brucken E, Budagov J, Budd HS, Burkett K, Busetto G, Bussey P, Butti P, Buzatu A, Calamba A, Camarda S, Campanelli M, Canelli F, Carls B, Carlsmith D, Carosi R, Carrillo S, Casal B, Casarsa M, Castro A, Catastini P, Cauz D, Cavaliere V, Cavalli-Sforza M, Cerri A, Cerrito L, Chen YC, Chertok M, Chiarelli G, Chlachidze G, Cho K, Chokheli D, Clark A, Clarke C, Convery ME, Conway J, Corbo M, Cordelli M, Cox CA, Cox DJ, Cremonesi M, Cruz D, Cuevas J, Culbertson R, D’Ascenzo N, Datta M, De Barbaro P, Demortier L, Deninno M, D’Errico M, Devoto F, Di Canto A, Di Ruzza B, Dittmann JR, Donati S, D’Onofrio M, Dorigo M, Driutti A, Ebina K, Edgar R, Elagin A, Erbacher R. 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. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2014 Apr 22;89(7).

Published In

Physical Review D - Particles, Fields, Gravitation and Cosmology

DOI

10.1103/PhysRevD.89.072014

EISSN

1550-2368

ISSN

1550-7998

Publication Date

April 22, 2014

Volume

89

Issue

7

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5101 Astronomical sciences
  • 4902 Mathematical physics
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences