Measurement of αs from bb̄ production at the cern pp̄ collider

C. Albajar; K. Ankoviak; S. Bartha; G. Bauer; A. Bezaguet; A. Böhrer; K. Bos; C. Buchanan; B. Buschbeck; H. Castilla-Valdez; P. Cennini; S. Cittolin; E. Clayton; D. Cline; J. A. Caughlan; D. Dau; C. Daum; M. della Negra; M. Demoulin; D. Denegri; H. Dibon; J. Dorenbosch; J. D. Dowell; K. Eggert; E. Eisenhandler; N. Ellis; H. Evans; H. Faissner; I. F. Fensome; L. Fortson; J. Garvey; A. Geiser; A. Givernaud; A. Gonidec; B. Gonzalez; J. Gronberg; D. J. Holthuizen; W. Jank; G. Jorat; P. I.P. Kalmus; V. Karimäki; I. Kenyon; R. Kinnunen; M. Krammer; S. Lammel; M. P.J. Landon; Y. Lemoigne; S. Levegrün; P. Lipa; C. Markou

doi:10.1016/0370-2693(95)01539-6

Measurement of α_s from bb̄ production at the cern pp̄ collider

C. Albajar, K. Ankoviak, S. Bartha, G. Bauer, A. Bezaguet, A. Böhrer, K. Bos, C. Buchanan, B. Buschbeck, H. Castilla-Valdez, P. Cennini, S. Cittolin, E. Clayton, D. Cline, J. A. Caughlan, D. Dau, C. Daum, M. della Negra, M. Demoulin, D. DenegriH. Dibon, J. Dorenbosch, J. D. Dowell, K. Eggert, E. Eisenhandler, N. Ellis, H. Evans, H. Faissner, I. F. Fensome, L. Fortson, J. Garvey, A. Geiser, A. Givernaud, A. Gonidec, B. Gonzalez, J. Gronberg, D. J. Holthuizen, W. Jank, G. Jorat, P. I.P. Kalmus, V. Karimäki, I. Kenyon, R. Kinnunen, M. Krammer, S. Lammel, M. P.J. Landon, Y. Lemoigne, S. Levegrün, P. Lipa, C. Markou

Physics and Astronomy (Twin Cities)

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

21 Scopus citations

Abstract

The UA1 Collaboration has recently improved its measurement of the beauty production cross-section by including explicit measurements of bb̄ correlations. Using these data we have determined the strong coupling constant α_s. The comparison of the measured cross-section for 2-body final states with O(α³_s) QCD predictions yields a measurement of α_s(20 GeV) = 0.145^{+0.012 +0.013}_{-0.010 exp -0.016 th}, corresponding to α_s(Mz) = 0.1131^{+0.007 +0.008}_{-0.006 exp -0.009 th}. This is the first theoretically well-defined measurement of α_s from a purely hadronic production process. Evaluating α_s from cross-sections at different Q²-values we find that the running of α_s is needed for internal consistency of the UA1 data.

Original language	English (US)
Pages (from-to)	46-54
Number of pages	9
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	369
Issue number	1
DOIs	https://doi.org/10.1016/0370-2693(95)01539-6
State	Published - Feb 15 1996

Bibliographical note

Funding Information:
We are thankful to the managementa nd staff of CERN and of all participating institutes for their vigorous support of the experiment.T he following funding agenciesh ave contributed to this programme: Fonds zur Fiirderung der Wissenschaftlichen Forschung, Austria; Valtion luonnontieteellinen toimikunta, Suomen Akatemia, Finland; Institut National de Physique Nucleaire et de Physique des Particules and Institut de Recherche Fondamen-tale (CEA), France; Bundesministerium fur Forschung und Technologie, Germany; Istituto Nationale di Fisica Nucleare, Italy; Science and Engineering Research Council, United Kingdom; Stichting Voor FundamenteelO nderzoek der Materie, The Netherlands; Centro de Investigaciones Energetica,M edioambien-tales y Tecnologicas (CIEMAT), Spain; Departmento f Energy, USA.

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Albajar, C., Ankoviak, K., Bartha, S., Bauer, G., Bezaguet, A., Böhrer, A., Bos, K., Buchanan, C., Buschbeck, B., Castilla-Valdez, H., Cennini, P., Cittolin, S., Clayton, E., Cline, D., Caughlan, J. A., Dau, D., Daum, C., della Negra, M., Demoulin, M., ... Markou, C. (1996). Measurement of α_s from bb̄ production at the cern pp̄ collider. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 369(1), 46-54. https://doi.org/10.1016/0370-2693(95)01539-6

Albajar, C, Ankoviak, K, Bartha, S, Bauer, G, Bezaguet, A, Böhrer, A, Bos, K, Buchanan, C, Buschbeck, B, Castilla-Valdez, H, Cennini, P, Cittolin, S, Clayton, E, Cline, D, Caughlan, JA, Dau, D, Daum, C, della Negra, M, Demoulin, M, Denegri, D, Dibon, H, Dorenbosch, J, Dowell, JD, Eggert, K, Eisenhandler, E, Ellis, N, Evans, H, Faissner, H, Fensome, IF, Fortson, L, Garvey, J, Geiser, A, Givernaud, A, Gonidec, A, Gonzalez, B, Gronberg, J, Holthuizen, DJ, Jank, W, Jorat, G, Kalmus, PIP, Karimäki, V, Kenyon, I, Kinnunen, R, Krammer, M, Lammel, S, Landon, MPJ, Lemoigne, Y, Levegrün, S, Lipa, P & Markou, C 1996, 'Measurement of α_s from bb̄ production at the cern pp̄ collider', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 369, no. 1, pp. 46-54. https://doi.org/10.1016/0370-2693(95)01539-6

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abstract = "The UA1 Collaboration has recently improved its measurement of the beauty production cross-section by including explicit measurements of b{\=b} correlations. Using these data we have determined the strong coupling constant αs. The comparison of the measured cross-section for 2-body final states with O(α3s) QCD predictions yields a measurement of αs(20 GeV) = 0.145+0.012 +0.013-0.010 exp -0.016 th, corresponding to αs(Mz) = 0.1131+0.007 +0.008-0.006 exp -0.009 th. This is the first theoretically well-defined measurement of αs from a purely hadronic production process. Evaluating αs from cross-sections at different Q2-values we find that the running of αs is needed for internal consistency of the UA1 data.",

author = "C. Albajar and K. Ankoviak and S. Bartha and G. Bauer and A. Bezaguet and A. B{\"o}hrer and K. Bos and C. Buchanan and B. Buschbeck and H. Castilla-Valdez and P. Cennini and S. Cittolin and E. Clayton and D. Cline and Caughlan, {J. A.} and D. Dau and C. Daum and {della Negra}, M. and M. Demoulin and D. Denegri and H. Dibon and J. Dorenbosch and Dowell, {J. D.} and K. Eggert and E. Eisenhandler and N. Ellis and H. Evans and H. Faissner and Fensome, {I. F.} and L. Fortson and J. Garvey and A. Geiser and A. Givernaud and A. Gonidec and B. Gonzalez and J. Gronberg and Holthuizen, {D. J.} and W. Jank and G. Jorat and Kalmus, {P. I.P.} and V. Karim{\"a}ki and I. Kenyon and R. Kinnunen and M. Krammer and S. Lammel and Landon, {M. P.J.} and Y. Lemoigne and S. Levegr{\"u}n and P. Lipa and C. Markou",

note = "Funding Information: We are thankful to the managementa nd staff of CERN and of all participating institutes for their vigorous support of the experiment.T he following funding agenciesh ave contributed to this programme: Fonds zur Fiirderung der Wissenschaftlichen Forschung, Austria; Valtion luonnontieteellinen toimikunta, Suomen Akatemia, Finland; Institut National de Physique Nucleaire et de Physique des Particules and Institut de Recherche Fondamen-tale (CEA), France; Bundesministerium fur Forschung und Technologie, Germany; Istituto Nationale di Fisica Nucleare, Italy; Science and Engineering Research Council, United Kingdom; Stichting Voor FundamenteelO nderzoek der Materie, The Netherlands; Centro de Investigaciones Energetica,M edioambien-tales y Tecnologicas (CIEMAT), Spain; Departmento f Energy, USA.",

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T1 - Measurement of αs from bb̄ production at the cern pp̄ collider

AU - Albajar, C.

AU - Ankoviak, K.

AU - Bartha, S.

AU - Bauer, G.

AU - Bezaguet, A.

AU - Böhrer, A.

AU - Bos, K.

AU - Buchanan, C.

AU - Buschbeck, B.

AU - Castilla-Valdez, H.

AU - Cennini, P.

AU - Cittolin, S.

AU - Clayton, E.

AU - Cline, D.

AU - Caughlan, J. A.

AU - Dau, D.

AU - Daum, C.

AU - della Negra, M.

AU - Demoulin, M.

AU - Denegri, D.

AU - Dibon, H.

AU - Dorenbosch, J.

AU - Dowell, J. D.

AU - Eggert, K.

AU - Eisenhandler, E.

AU - Ellis, N.

AU - Evans, H.

AU - Faissner, H.

AU - Fensome, I. F.

AU - Fortson, L.

AU - Garvey, J.

AU - Geiser, A.

AU - Givernaud, A.

AU - Gonidec, A.

AU - Gonzalez, B.

AU - Gronberg, J.

AU - Holthuizen, D. J.

AU - Jank, W.

AU - Jorat, G.

AU - Kalmus, P. I.P.

AU - Karimäki, V.

AU - Kenyon, I.

AU - Kinnunen, R.

AU - Krammer, M.

AU - Lammel, S.

AU - Landon, M. P.J.

AU - Lemoigne, Y.

AU - Levegrün, S.

AU - Lipa, P.

AU - Markou, C.

N1 - Funding Information: We are thankful to the managementa nd staff of CERN and of all participating institutes for their vigorous support of the experiment.T he following funding agenciesh ave contributed to this programme: Fonds zur Fiirderung der Wissenschaftlichen Forschung, Austria; Valtion luonnontieteellinen toimikunta, Suomen Akatemia, Finland; Institut National de Physique Nucleaire et de Physique des Particules and Institut de Recherche Fondamen-tale (CEA), France; Bundesministerium fur Forschung und Technologie, Germany; Istituto Nationale di Fisica Nucleare, Italy; Science and Engineering Research Council, United Kingdom; Stichting Voor FundamenteelO nderzoek der Materie, The Netherlands; Centro de Investigaciones Energetica,M edioambien-tales y Tecnologicas (CIEMAT), Spain; Departmento f Energy, USA.

PY - 1996/2/15

Y1 - 1996/2/15

N2 - The UA1 Collaboration has recently improved its measurement of the beauty production cross-section by including explicit measurements of bb̄ correlations. Using these data we have determined the strong coupling constant αs. The comparison of the measured cross-section for 2-body final states with O(α3s) QCD predictions yields a measurement of αs(20 GeV) = 0.145+0.012 +0.013-0.010 exp -0.016 th, corresponding to αs(Mz) = 0.1131+0.007 +0.008-0.006 exp -0.009 th. This is the first theoretically well-defined measurement of αs from a purely hadronic production process. Evaluating αs from cross-sections at different Q2-values we find that the running of αs is needed for internal consistency of the UA1 data.

AB - The UA1 Collaboration has recently improved its measurement of the beauty production cross-section by including explicit measurements of bb̄ correlations. Using these data we have determined the strong coupling constant αs. The comparison of the measured cross-section for 2-body final states with O(α3s) QCD predictions yields a measurement of αs(20 GeV) = 0.145+0.012 +0.013-0.010 exp -0.016 th, corresponding to αs(Mz) = 0.1131+0.007 +0.008-0.006 exp -0.009 th. This is the first theoretically well-defined measurement of αs from a purely hadronic production process. Evaluating αs from cross-sections at different Q2-values we find that the running of αs is needed for internal consistency of the UA1 data.

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