Measurement of {Mathematical expression}using a double tagging method

OPAL Collaboration

doi:10.1007/BF01571301

Measurement of {Mathematical expression}using a double tagging method

OPAL Collaboration

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

The fraction of {Mathematical expression}; events in hadronic Z⁰ decays has been measured using the data collected by OPAL in 1992 and 1993. The presence of electrons or muons from semileptonic decays of bottom hadrons and the detection of bottom hadron decay vertices were used together to obtain an event sample enriched in {Mathematical expression} decays. To reduce the systematic error on the measurement of the {Mathematical expression} fraction, the efficiency of the {Mathematical expression} event tagging was obtained from the data by comparing the numbers of events having a bottom signature in either one or both thrust hemispheres. A value of {Mathematical expression} was obtained, where the first error is statistical and the second systematic. The uncertainty on the decay width {Mathematical expression} is not included in these errors. A fractional variation of this width by ±8% about its Standard Model prediction would result in a variation of the measured {Mathematical expression} fraction of ±0.0015.

Original language	English
Pages (from-to)	17-30
Number of pages	14
Journal	European Physical Journal C
Volume	65
Issue number	1
DOIs	https://doi.org/10.1007/BF01571301
State	Published - 1 Mar 1994
Externally published	Yes

ASJC Scopus subject areas

Engineering (miscellaneous)
Physics and Astronomy (miscellaneous)

Access to Document

10.1007/BF01571301

Cite this

@article{c6138f20f6dd47a9ac24cc4f9174c6fb,

title = "Measurement of {Mathematical expression}using a double tagging method",

abstract = "The fraction of {Mathematical expression}; events in hadronic Z0 decays has been measured using the data collected by OPAL in 1992 and 1993. The presence of electrons or muons from semileptonic decays of bottom hadrons and the detection of bottom hadron decay vertices were used together to obtain an event sample enriched in {Mathematical expression} decays. To reduce the systematic error on the measurement of the {Mathematical expression} fraction, the efficiency of the {Mathematical expression} event tagging was obtained from the data by comparing the numbers of events having a bottom signature in either one or both thrust hemispheres. A value of {Mathematical expression} was obtained, where the first error is statistical and the second systematic. The uncertainty on the decay width {Mathematical expression} is not included in these errors. A fractional variation of this width by ±8% about its Standard Model prediction would result in a variation of the measured {Mathematical expression} fraction of ±0.0015.",

author = "{OPAL Collaboration} and R. Akers and G. Alexander and J. Allison and Anderson, {K. J.} and S. Arcelli and S. Asai and A. Astbury and D. Axen and G. Azuelos and Ball, {A. H.} and E. Barberio and Barlow, {R. J.} and R. Bartoldus and Batley, {J. R.} and G. Beaudoin and A. Beck and Beck, {G. A.} and J. Becker and C. Beeston and T. Behnke and Bell, {K. W.} and G. Bella and P. Bentkowski and S. Bentvelsen and P. Berlich and S. Bethke and O. Biebel and Bloodworth, {I. J.} and P. Bock and Bosch, {H. M.} and M. Boutemeur and S. Braibant and P. Bright-Thomas and Brown, {R. M.} and A. Buijs and Burckhart, {H. J.} and C. Burgard and P. Capiluppi and Carnegie, {R. K.} and Carter, {A. A.} and Carter, {J. R.} and Chang, {C. Y.} and C. Charlesworth and Charlton, {D. G.} and Chu, {S. L.} and Clarke, {P. E.L.} and Clayton, {J. C.} and Clowes, {S. G.} and I. Cohen and R. Folman",

year = "1994",

month = mar,

day = "1",

doi = "10.1007/BF01571301",

language = "English",

volume = "65",

pages = "17--30",

journal = "European Physical Journal C",

issn = "0170-9739",

publisher = "Springer New York",

number = "1",

}

TY - JOUR

T1 - Measurement of {Mathematical expression}using a double tagging method

AU - OPAL Collaboration

AU - Akers, R.

AU - Alexander, G.

AU - Allison, J.

AU - Anderson, K. J.

AU - Arcelli, S.

AU - Asai, S.

AU - Astbury, A.

AU - Axen, D.

AU - Azuelos, G.

AU - Ball, A. H.

AU - Barberio, E.

AU - Barlow, R. J.

AU - Bartoldus, R.

AU - Batley, J. R.

AU - Beaudoin, G.

AU - Beck, A.

AU - Beck, G. A.

AU - Becker, J.

AU - Beeston, C.

AU - Behnke, T.

AU - Bell, K. W.

AU - Bella, G.

AU - Bentkowski, P.

AU - Bentvelsen, S.

AU - Berlich, P.

AU - Bethke, S.

AU - Biebel, O.

AU - Bloodworth, I. J.

AU - Bock, P.

AU - Bosch, H. M.

AU - Boutemeur, M.

AU - Braibant, S.

AU - Bright-Thomas, P.

AU - Brown, R. M.

AU - Buijs, A.

AU - Burckhart, H. J.

AU - Burgard, C.

AU - Capiluppi, P.

AU - Carnegie, R. K.

AU - Carter, A. A.

AU - Carter, J. R.

AU - Chang, C. Y.

AU - Charlesworth, C.

AU - Charlton, D. G.

AU - Chu, S. L.

AU - Clarke, P. E.L.

AU - Clayton, J. C.

AU - Clowes, S. G.

AU - Cohen, I.

AU - Folman, R.

PY - 1994/3/1

Y1 - 1994/3/1

N2 - The fraction of {Mathematical expression}; events in hadronic Z0 decays has been measured using the data collected by OPAL in 1992 and 1993. The presence of electrons or muons from semileptonic decays of bottom hadrons and the detection of bottom hadron decay vertices were used together to obtain an event sample enriched in {Mathematical expression} decays. To reduce the systematic error on the measurement of the {Mathematical expression} fraction, the efficiency of the {Mathematical expression} event tagging was obtained from the data by comparing the numbers of events having a bottom signature in either one or both thrust hemispheres. A value of {Mathematical expression} was obtained, where the first error is statistical and the second systematic. The uncertainty on the decay width {Mathematical expression} is not included in these errors. A fractional variation of this width by ±8% about its Standard Model prediction would result in a variation of the measured {Mathematical expression} fraction of ±0.0015.

AB - The fraction of {Mathematical expression}; events in hadronic Z0 decays has been measured using the data collected by OPAL in 1992 and 1993. The presence of electrons or muons from semileptonic decays of bottom hadrons and the detection of bottom hadron decay vertices were used together to obtain an event sample enriched in {Mathematical expression} decays. To reduce the systematic error on the measurement of the {Mathematical expression} fraction, the efficiency of the {Mathematical expression} event tagging was obtained from the data by comparing the numbers of events having a bottom signature in either one or both thrust hemispheres. A value of {Mathematical expression} was obtained, where the first error is statistical and the second systematic. The uncertainty on the decay width {Mathematical expression} is not included in these errors. A fractional variation of this width by ±8% about its Standard Model prediction would result in a variation of the measured {Mathematical expression} fraction of ±0.0015.

UR - http://www.scopus.com/inward/record.url?scp=0001777114&partnerID=8YFLogxK

U2 - 10.1007/BF01571301

DO - 10.1007/BF01571301

M3 - Article

AN - SCOPUS:0001777114

SN - 0170-9739

VL - 65

SP - 17

EP - 30

JO - European Physical Journal C

JF - European Physical Journal C

IS - 1

ER -

Measurement of {Mathematical expression}using a double tagging method

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this