Direct Observation of the Strange b Baryon Xi(b)-.

Physics

Text available via DOI:

https://doi.org/10.1103/PhysRevLett.99.052001
Final published version

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Published

Standard

Direct Observation of the Strange b Baryon Xi(b)-. / Borissov, Guennadi ; Bertram, I. A.; Fox, H. et al.
In: Physical review letters, Vol. 99, No. 5, 03.08.2007, p. 05200.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Bibtex

@article{ffbe6d5f77dd493aaeb160f13f31ee4c,

title = "Direct Observation of the Strange b Baryon Xi(b)-.",

abstract = "We report the first direct observation of the strange b baryon (). We reconstruct the decay J/-, with J/µ+µ-, and --p-- in p collisions at =1.96 TeV. Using 1.3 fb-1 of data collected by the D0 detector, we observe 15.2±4.4(stat)(syst) candidates at a mass of 5.774±0.011(stat)±0.015(syst) GeV. The significance of the observed signal is 5.5, equivalent to a probability of 3.3×10-8 of it arising from a background fluctuation. Normalizing to the decay bJ/, we measure the relative rate =0.28±0.09(stat)(syst).",

author = "Guennadi Borissov and Bertram, {I. A.} and H. Fox and Ratoff, {Peter N.}",

note = "Borissov developed and implemented a special version of his offline tracking algorithm in the search for Xi_b which considerably increased the efficiency of the signal selection and was crucial for its observation. This is the first observation of a baryon containing quarks from all three families. RAE_import_type : Journal article RAE_uoa_type : Physics",

year = "2007",

month = aug,

day = "3",

doi = "10.1103/PhysRevLett.99.052001",

language = "English",

volume = "99",

pages = "05200",

journal = "Physical review letters",

issn = "1079-7114",

publisher = "American Physical Society",

number = "5",

}

RIS

TY - JOUR

T1 - Direct Observation of the Strange b Baryon Xi(b)-.

AU - Borissov, Guennadi

AU - Bertram, I. A.

AU - Fox, H.

AU - Ratoff, Peter N.

N1 - Borissov developed and implemented a special version of his offline tracking algorithm in the search for Xi_b which considerably increased the efficiency of the signal selection and was crucial for its observation. This is the first observation of a baryon containing quarks from all three families. RAE_import_type : Journal article RAE_uoa_type : Physics

PY - 2007/8/3

Y1 - 2007/8/3

N2 - We report the first direct observation of the strange b baryon (). We reconstruct the decay J/-, with J/µ+µ-, and --p-- in p collisions at =1.96 TeV. Using 1.3 fb-1 of data collected by the D0 detector, we observe 15.2±4.4(stat)(syst) candidates at a mass of 5.774±0.011(stat)±0.015(syst) GeV. The significance of the observed signal is 5.5, equivalent to a probability of 3.3×10-8 of it arising from a background fluctuation. Normalizing to the decay bJ/, we measure the relative rate =0.28±0.09(stat)(syst).

AB - We report the first direct observation of the strange b baryon (). We reconstruct the decay J/-, with J/µ+µ-, and --p-- in p collisions at =1.96 TeV. Using 1.3 fb-1 of data collected by the D0 detector, we observe 15.2±4.4(stat)(syst) candidates at a mass of 5.774±0.011(stat)±0.015(syst) GeV. The significance of the observed signal is 5.5, equivalent to a probability of 3.3×10-8 of it arising from a background fluctuation. Normalizing to the decay bJ/, we measure the relative rate =0.28±0.09(stat)(syst).

U2 - 10.1103/PhysRevLett.99.052001

DO - 10.1103/PhysRevLett.99.052001

M3 - Journal article

VL - 99

SP - 05200

JO - Physical review letters

JF - Physical review letters

SN - 1079-7114

IS - 5

ER -

Research

Links

Text available via DOI: