Improved measurement of the probability for gluon splitting into bb̄ in Z0 decays

Koya Abe; Kenji Abe; T. Abe; I. Adam; H. Akimoto; D. Aston; K. G. Baird; C. Baltay; H. R. Band; T. L. Barklow; J. M. Bauer; G. Bellodi; R. Berger; G. Blaylock; J. R. Bogart; G. R. Bower; J. E. Brau; M. Breidenbach; W. M. Bugg; D. Burke; T. H. Burnett; P. N. Burrows; A. Calcaterra; R. Cassell; A. Chou; H. O. Cohn; J. A. Coller; M. R. Convery; V. Cook; R. F. Cowan; G. Crawford; C. J.S. Damerell; M. Daoudi; N. de Groot; R. de Sangro; D. N. Dong; M. Doser; R. Dubois; I. Erofeeva; V. Eschenburg; E. Etzion; S. Fahey; D. Falciai; J. P. Fernandez; K. Flood; R. Frey; E. L. Hart; K. Hasuko; S. S. Hertzbach; M. E. Huffer; X. Huynh; M. Iwasaki; D. J. Jackson; P. Jacques; J. A. Jaros; Z. Y. Jiang; A. S. Johnson; J. R. Johnson; R. Kajikawa; M. Kalelkar; H. J. Kang; R. R. Kofler; R. S. Kroeger; M. Langston; D. W.G. Leith; V. Lia; C. Lin; G. Mancinelli; S. Manly; G. Mantovani; T. W. Markiewicz; T. Maruyama; A. K. McKemey; R. Messner; K. C. Moffeit; T. B. Moore; M. Morii; D. Muller; V. Murzin; S. Narita; U. Nauenberg; H. Neal; G. Nesom; N. Oishi; D. Onoprienko; L. S. Osborne; R. S. Panvini; C. H. Park; I. Peruzzi; M. Piccolo; L. Piemontese; R. J. Plano; R. Prepost; C. Y. Prescott; B. N. Ratcliff; J. Reidy; P. L. Reinertsen; L. S. Rochester; P. C. Rowson; J. J. Russell; O. H. Saxton; T. Schalk; B. A. Schumm; J. Schwiening; V. V. Serbo; G. Shapiro; N. B. Sinev; J. A. Snyder; H. Staengle; A. Stahl; P. Stamer; H. Steiner; D. Su; F. Suekane; A. Sugiyama; S. Suzuki; M. Swartz; F. E. Taylor; J. Thom; E. Torrence; T. Usher; J. Va'vra; R. Verdier; D. L. Wagner; A. P. Waite; S. Walston; A. W. Weidemann; E. R. Weiss; J. S. Whitaker; S. H. Williams; S. Willocq; R. J. Wilson; W. J. Wisniewski; J. L. Wittlin; M. Woods; T. R. Wright; R. K. Yamamoto; J. Yashima; S. J. Yellin; C. C. Young; H. Yuta

doi:10.1016/S0370-2693(01)00367-7

Improved measurement of the probability for gluon splitting into bb̄ in Z⁰ decays

Koya Abe^*, Kenji Abe^*, T. Abe, I. Adam, H. Akimoto, D. Aston, K. G. Baird, C. Baltay, H. R. Band, T. L. Barklow, J. M. Bauer, G. Bellodi, R. Berger, G. Blaylock, J. R. Bogart, G. R. Bower, J. E. Brau, M. Breidenbach, W. M. Bugg, D. BurkeT. H. Burnett, P. N. Burrows, A. Calcaterra, R. Cassell, A. Chou, H. O. Cohn, J. A. Coller, M. R. Convery, V. Cook, R. F. Cowan, G. Crawford, C. J.S. Damerell, M. Daoudi, N. de Groot, R. de Sangro, D. N. Dong, M. Doser, R. Dubois, I. Erofeeva, V. Eschenburg, E. Etzion, S. Fahey, D. Falciai, J. P. Fernandez, K. Flood, R. Frey, E. L. Hart, K. Hasuko, S. S. Hertzbach, M. E. Huffer, X. Huynh, M. Iwasaki, D. J. Jackson, P. Jacques, J. A. Jaros, Z. Y. Jiang, A. S. Johnson, J. R. Johnson, R. Kajikawa, M. Kalelkar, H. J. Kang, R. R. Kofler, R. S. Kroeger, M. Langston, D. W.G. Leith, V. Lia, C. Lin, G. Mancinelli, S. Manly, G. Mantovani, T. W. Markiewicz, T. Maruyama, A. K. McKemey, R. Messner, K. C. Moffeit, T. B. Moore, M. Morii, D. Muller, V. Murzin, S. Narita, U. Nauenberg, H. Neal, G. Nesom, N. Oishi, D. Onoprienko, L. S. Osborne, R. S. Panvini, C. H. Park, I. Peruzzi, M. Piccolo, L. Piemontese, R. J. Plano, R. Prepost, C. Y. Prescott, B. N. Ratcliff, J. Reidy, P. L. Reinertsen, L. S. Rochester, P. C. Rowson, J. J. Russell, O. H. Saxton, T. Schalk, B. A. Schumm, J. Schwiening, V. V. Serbo, G. Shapiro, N. B. Sinev, J. A. Snyder, H. Staengle, A. Stahl, P. Stamer, H. Steiner, D. Su, F. Suekane, A. Sugiyama, S. Suzuki, M. Swartz, F. E. Taylor, J. Thom, E. Torrence, T. Usher, J. Va'vra, R. Verdier, D. L. Wagner, A. P. Waite, S. Walston, A. W. Weidemann, E. R. Weiss, J. S. Whitaker, S. H. Williams, S. Willocq, R. J. Wilson, W. J. Wisniewski, J. L. Wittlin, M. Woods, T. R. Wright, R. K. Yamamoto, J. Yashima, S. J. Yellin, C. C. Young, H. Yuta

^*Corresponding author for this work

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

Abstract

We have measured gluon splitting into bottom quarks, g → bb̄, in hadronic Z⁰ decays collected by SLD between 1996 and 1998. The analysis was performed by looking for secondary bottom production in 4-jet events of any primary flavor. 4-jet events were identified, and in each event a topological vertex-mass technique was applied to the two jets closest in angle in order to identify them as b or b̄ jets. The upgraded CCD-based vertex detector gives very high B-tagging efficiency, especially for B hadrons with the low energies typical of this process. We measured the rate of g → bb̄ production per hadronic event, g_bb̄, to be (2.44 ± 0.59(stat.) ± 0.34(syst.)) × 10^-3.

Original language	English
Pages (from-to)	61-69
Number of pages	9
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	507
Issue number	1-4
DOIs	https://doi.org/10.1016/S0370-2693(01)00367-7
State	Published - 17 May 2001
Externally published	Yes

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10.1016/S0370-2693(01)00367-7

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Abe, K., Abe, K., Abe, T., Adam, I., Akimoto, H., Aston, D., Baird, K. G., Baltay, C., Band, H. R., Barklow, T. L., Bauer, J. M., Bellodi, G., Berger, R., Blaylock, G., Bogart, J. R., Bower, G. R., Brau, J. E., Breidenbach, M., Bugg, W. M., ... Yuta, H. (2001). Improved measurement of the probability for gluon splitting into bb̄ in Z⁰ decays. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 507(1-4), 61-69. https://doi.org/10.1016/S0370-2693(01)00367-7

@article{54a9d4e244fc45dd877488456e92422e,

title = "Improved measurement of the probability for gluon splitting into b{\=b} in Z0 decays",

abstract = "We have measured gluon splitting into bottom quarks, g → b{\=b}, in hadronic Z0 decays collected by SLD between 1996 and 1998. The analysis was performed by looking for secondary bottom production in 4-jet events of any primary flavor. 4-jet events were identified, and in each event a topological vertex-mass technique was applied to the two jets closest in angle in order to identify them as b or {\=b} jets. The upgraded CCD-based vertex detector gives very high B-tagging efficiency, especially for B hadrons with the low energies typical of this process. We measured the rate of g → b{\=b} production per hadronic event, gb{\=b}, to be (2.44 ± 0.59(stat.) ± 0.34(syst.)) × 10-3.",

author = "Koya Abe and Kenji Abe and T. Abe and I. Adam and H. Akimoto and D. Aston and Baird, {K. G.} and C. Baltay and Band, {H. R.} and Barklow, {T. L.} and Bauer, {J. M.} and G. Bellodi and R. Berger and G. Blaylock and Bogart, {J. R.} and Bower, {G. R.} and Brau, {J. E.} and M. Breidenbach and Bugg, {W. M.} and D. Burke and Burnett, {T. H.} and Burrows, {P. N.} and A. Calcaterra and R. Cassell and A. Chou and Cohn, {H. O.} and Coller, {J. A.} and Convery, {M. R.} and V. Cook and Cowan, {R. F.} and G. Crawford and Damerell, {C. J.S.} and M. Daoudi and {de Groot}, N. and {de Sangro}, R. and Dong, {D. N.} and M. Doser and R. Dubois and I. Erofeeva and V. Eschenburg and E. Etzion and S. Fahey and D. Falciai and Fernandez, {J. P.} and K. Flood and R. Frey and Hart, {E. L.} and K. Hasuko and Hertzbach, {S. S.} and Huffer, {M. E.} and X. Huynh and M. Iwasaki and Jackson, {D. J.} and P. Jacques and Jaros, {J. A.} and Jiang, {Z. Y.} and Johnson, {A. S.} and Johnson, {J. R.} and R. Kajikawa and M. Kalelkar and Kang, {H. J.} and Kofler, {R. R.} and Kroeger, {R. S.} and M. Langston and Leith, {D. W.G.} and V. Lia and C. Lin and G. Mancinelli and S. Manly and G. Mantovani and Markiewicz, {T. W.} and T. Maruyama and McKemey, {A. K.} and R. Messner and Moffeit, {K. C.} and Moore, {T. B.} and M. Morii and D. Muller and V. Murzin and S. Narita and U. Nauenberg and H. Neal and G. Nesom and N. Oishi and D. Onoprienko and Osborne, {L. S.} and Panvini, {R. S.} and Park, {C. H.} and I. Peruzzi and M. Piccolo and L. Piemontese and Plano, {R. J.} and R. Prepost and Prescott, {C. Y.} and Ratcliff, {B. N.} and J. Reidy and Reinertsen, {P. L.} and Rochester, {L. S.} and Rowson, {P. C.} and Russell, {J. J.} and Saxton, {O. H.} and T. Schalk and Schumm, {B. A.} and J. Schwiening and Serbo, {V. V.} and G. Shapiro and Sinev, {N. B.} and Snyder, {J. A.} and H. Staengle and A. Stahl and P. Stamer and H. Steiner and D. Su and F. Suekane and A. Sugiyama and S. Suzuki and M. Swartz and Taylor, {F. E.} and J. Thom and E. Torrence and T. Usher and J. Va'vra and R. Verdier and Wagner, {D. L.} and Waite, {A. P.} and S. Walston and Weidemann, {A. W.} and Weiss, {E. R.} and Whitaker, {J. S.} and Williams, {S. H.} and S. Willocq and Wilson, {R. J.} and Wisniewski, {W. J.} and Wittlin, {J. L.} and M. Woods and Wright, {T. R.} and Yamamoto, {R. K.} and J. Yashima and Yellin, {S. J.} and Young, {C. C.} and H. Yuta",

note = "Funding Information: We thank Mike Seymour for helpful conversations. We thank the personnel of the SLAC accelerator department and the technical staffs of our collaborating institutions for their outstanding efforts on our behalf. This work was supported by the US Department of Energy and National Science Foundation, the UK Particle Physics and Astronomy Research Council, the Istituto Nazionale di Fisica Nucleare of Italy, the Japan–US Cooperative Research Project on High Energy Physics, and the Korea Research Foundation. ",

year = "2001",

month = may,

day = "17",

doi = "10.1016/S0370-2693(01)00367-7",

language = "אנגלית",

volume = "507",

pages = "61--69",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier",

number = "1-4",

}

Abe, K, Abe, K, Abe, T, Adam, I, Akimoto, H, Aston, D, Baird, KG, Baltay, C, Band, HR, Barklow, TL, Bauer, JM, Bellodi, G, Berger, R, Blaylock, G, Bogart, JR, Bower, GR, Brau, JE, Breidenbach, M, Bugg, WM, Burke, D, Burnett, TH, Burrows, PN, Calcaterra, A, Cassell, R, Chou, A, Cohn, HO, Coller, JA, Convery, MR, Cook, V, Cowan, RF, Crawford, G, Damerell, CJS, Daoudi, M, de Groot, N, de Sangro, R, Dong, DN, Doser, M, Dubois, R, Erofeeva, I, Eschenburg, V, Etzion, E, Fahey, S, Falciai, D, Fernandez, JP, Flood, K, Frey, R, Hart, EL, Hasuko, K, Hertzbach, SS, Huffer, ME, Huynh, X, Iwasaki, M, Jackson, DJ, Jacques, P, Jaros, JA, Jiang, ZY, Johnson, AS, Johnson, JR, Kajikawa, R, Kalelkar, M, Kang, HJ, Kofler, RR, Kroeger, RS, Langston, M, Leith, DWG, Lia, V, Lin, C, Mancinelli, G, Manly, S, Mantovani, G, Markiewicz, TW, Maruyama, T, McKemey, AK, Messner, R, Moffeit, KC, Moore, TB, Morii, M, Muller, D, Murzin, V, Narita, S, Nauenberg, U, Neal, H, Nesom, G, Oishi, N, Onoprienko, D, Osborne, LS, Panvini, RS, Park, CH, Peruzzi, I, Piccolo, M, Piemontese, L, Plano, RJ, Prepost, R, Prescott, CY, Ratcliff, BN, Reidy, J, Reinertsen, PL, Rochester, LS, Rowson, PC, Russell, JJ, Saxton, OH, Schalk, T, Schumm, BA, Schwiening, J, Serbo, VV, Shapiro, G, Sinev, NB, Snyder, JA, Staengle, H, Stahl, A, Stamer, P, Steiner, H, Su, D, Suekane, F, Sugiyama, A, Suzuki, S, Swartz, M, Taylor, FE, Thom, J, Torrence, E, Usher, T, Va'vra, J, Verdier, R, Wagner, DL, Waite, AP, Walston, S, Weidemann, AW, Weiss, ER, Whitaker, JS, Williams, SH, Willocq, S, Wilson, RJ, Wisniewski, WJ, Wittlin, JL, Woods, M, Wright, TR, Yamamoto, RK, Yashima, J, Yellin, SJ, Young, CC & Yuta, H 2001, 'Improved measurement of the probability for gluon splitting into bb̄ in Z⁰ decays', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 507, no. 1-4, pp. 61-69. https://doi.org/10.1016/S0370-2693(01)00367-7

TY - JOUR

T1 - Improved measurement of the probability for gluon splitting into bb̄ in Z0 decays

AU - Abe, Koya

AU - Abe, Kenji

AU - Abe, T.

AU - Adam, I.

AU - Akimoto, H.

AU - Aston, D.

AU - Baird, K. G.

AU - Baltay, C.

AU - Band, H. R.

AU - Barklow, T. L.

AU - Bauer, J. M.

AU - Bellodi, G.

AU - Berger, R.

AU - Blaylock, G.

AU - Bogart, J. R.

AU - Bower, G. R.

AU - Brau, J. E.

AU - Breidenbach, M.

AU - Bugg, W. M.

AU - Burke, D.

AU - Burnett, T. H.

AU - Burrows, P. N.

AU - Calcaterra, A.

AU - Cassell, R.

AU - Chou, A.

AU - Cohn, H. O.

AU - Coller, J. A.

AU - Convery, M. R.

AU - Cook, V.

AU - Cowan, R. F.

AU - Crawford, G.

AU - Damerell, C. J.S.

AU - Daoudi, M.

AU - de Groot, N.

AU - de Sangro, R.

AU - Dong, D. N.

AU - Doser, M.

AU - Dubois, R.

AU - Erofeeva, I.

AU - Eschenburg, V.

AU - Etzion, E.

AU - Fahey, S.

AU - Falciai, D.

AU - Fernandez, J. P.

AU - Flood, K.

AU - Frey, R.

AU - Hart, E. L.

AU - Hasuko, K.

AU - Hertzbach, S. S.

AU - Huffer, M. E.

AU - Huynh, X.

AU - Iwasaki, M.

AU - Jackson, D. J.

AU - Jacques, P.

AU - Jaros, J. A.

AU - Jiang, Z. Y.

AU - Johnson, A. S.

AU - Johnson, J. R.

AU - Kajikawa, R.

AU - Kalelkar, M.

AU - Kang, H. J.

AU - Kofler, R. R.

AU - Kroeger, R. S.

AU - Langston, M.

AU - Leith, D. W.G.

AU - Lia, V.

AU - Lin, C.

AU - Mancinelli, G.

AU - Manly, S.

AU - Mantovani, G.

AU - Markiewicz, T. W.

AU - Maruyama, T.

AU - McKemey, A. K.

AU - Messner, R.

AU - Moffeit, K. C.

AU - Moore, T. B.

AU - Morii, M.

AU - Muller, D.

AU - Murzin, V.

AU - Narita, S.

AU - Nauenberg, U.

AU - Neal, H.

AU - Nesom, G.

AU - Oishi, N.

AU - Onoprienko, D.

AU - Osborne, L. S.

AU - Panvini, R. S.

AU - Park, C. H.

AU - Peruzzi, I.

AU - Piccolo, M.

AU - Piemontese, L.

AU - Plano, R. J.

AU - Prepost, R.

AU - Prescott, C. Y.

AU - Ratcliff, B. N.

AU - Reidy, J.

AU - Reinertsen, P. L.

AU - Rochester, L. S.

AU - Rowson, P. C.

AU - Russell, J. J.

AU - Saxton, O. H.

AU - Schalk, T.

AU - Schumm, B. A.

AU - Schwiening, J.

AU - Serbo, V. V.

AU - Shapiro, G.

AU - Sinev, N. B.

AU - Snyder, J. A.

AU - Staengle, H.

AU - Stahl, A.

AU - Stamer, P.

AU - Steiner, H.

AU - Su, D.

AU - Suekane, F.

AU - Sugiyama, A.

AU - Suzuki, S.

AU - Swartz, M.

AU - Taylor, F. E.

AU - Thom, J.

AU - Torrence, E.

AU - Usher, T.

AU - Va'vra, J.

AU - Verdier, R.

AU - Wagner, D. L.

AU - Waite, A. P.

AU - Walston, S.

AU - Weidemann, A. W.

AU - Weiss, E. R.

AU - Whitaker, J. S.

AU - Williams, S. H.

AU - Willocq, S.

AU - Wilson, R. J.

AU - Wisniewski, W. J.

AU - Wittlin, J. L.

AU - Woods, M.

AU - Wright, T. R.

AU - Yamamoto, R. K.

AU - Yashima, J.

AU - Yellin, S. J.

AU - Young, C. C.

AU - Yuta, H.

N1 - Funding Information: We thank Mike Seymour for helpful conversations. We thank the personnel of the SLAC accelerator department and the technical staffs of our collaborating institutions for their outstanding efforts on our behalf. This work was supported by the US Department of Energy and National Science Foundation, the UK Particle Physics and Astronomy Research Council, the Istituto Nazionale di Fisica Nucleare of Italy, the Japan–US Cooperative Research Project on High Energy Physics, and the Korea Research Foundation.

PY - 2001/5/17

Y1 - 2001/5/17

N2 - We have measured gluon splitting into bottom quarks, g → bb̄, in hadronic Z0 decays collected by SLD between 1996 and 1998. The analysis was performed by looking for secondary bottom production in 4-jet events of any primary flavor. 4-jet events were identified, and in each event a topological vertex-mass technique was applied to the two jets closest in angle in order to identify them as b or b̄ jets. The upgraded CCD-based vertex detector gives very high B-tagging efficiency, especially for B hadrons with the low energies typical of this process. We measured the rate of g → bb̄ production per hadronic event, gbb̄, to be (2.44 ± 0.59(stat.) ± 0.34(syst.)) × 10-3.

AB - We have measured gluon splitting into bottom quarks, g → bb̄, in hadronic Z0 decays collected by SLD between 1996 and 1998. The analysis was performed by looking for secondary bottom production in 4-jet events of any primary flavor. 4-jet events were identified, and in each event a topological vertex-mass technique was applied to the two jets closest in angle in order to identify them as b or b̄ jets. The upgraded CCD-based vertex detector gives very high B-tagging efficiency, especially for B hadrons with the low energies typical of this process. We measured the rate of g → bb̄ production per hadronic event, gbb̄, to be (2.44 ± 0.59(stat.) ± 0.34(syst.)) × 10-3.

UR - http://www.scopus.com/inward/record.url?scp=0035902167&partnerID=8YFLogxK

U2 - 10.1016/S0370-2693(01)00367-7

DO - 10.1016/S0370-2693(01)00367-7

M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???

AN - SCOPUS:0035902167

SN - 0370-2693

VL - 507

SP - 61

EP - 69

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 1-4

ER -

Improved measurement of the probability for gluon splitting into bb̄ in Z⁰ decays

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