Measurement of charged-particle multiplicities in gluon and quark jets in pp̄ collisions at s=1.8TeV

Un-Ki Yang; D. Acosta; T. Affolder; M. G. Albrow; D. Ambrose; D. Amidei; K. Anikeev; J. Antos; G. Apollinari; T. Arisawa; A. Artikov; W. Ashmanskas; F. Azfar; P. Azzi-Bacchetta; N. Bacchetta; H. Bachacou; W. Badgett; A. Barbaro-Galtieri; V. E. Barnes; B. A. Barnett; S. Baroiant; M. Barone; G. Bauer; F. Bedeschi; S. Behari; S. Belforte; W. H. Bell; G. Bellettini; J. Bellinger; D. Benjamin; A. Beretvas; A. Bhatti; M. Binkley; D. Bisello; M. Bishai; R. E. Blair; C. Blocker; K. Bloom; B. Blumenfeld; A. Bocci; A. Bodek; G. Bolla; A. Bolshov; D. Bortoletto; J. Boudreau; C. Bromberg; E. Brubaker; J. Budagov; H. S. Budd; K. Burkett; G. Busetto; K. L. Byrum; S. Cabrera; M. Campbell; W. Carithers; D. Carlsmith; A. Castro; D. Cauz; A. Cerri; L. Cerrito; J. Chapman; C. Chen; Y. C. Chen; M. Chertok; G. Chiarelli; G. Chlachidze; F. Chlebana; M. L. Chu; J. Y. Chung; W. H. Chung; Y. S. Chung; C. I. Ciobanu; A. G. Clark; M. Coca; A. Connolly; M. Convery; J. Conway; M. Cordelli; J. Cranshaw; R. Culbertson; D. Dagenhart; S. D'Auria; P. De Barbaro; S. De Cecco; S. Dell'Agnello; M. Dell'Orso; S. Demers; L. Demortier; M. Deninno; D. De Pedis; P. F. Derwent; C. Dionisi; J. R. Dittmann; A. Dominguez; S. Donati; M. D'Onofrio; T. Dorigo; N. Eddy; R. Erbacher; D. Errede

doi:10.1103/PhysRevLett.94.171802

Measurement of charged-particle multiplicities in gluon and quark jets in pp̄ collisions at s=1.8TeV

Un-Ki Yang, D. Acosta, T. Affolder, M. G. Albrow, D. Ambrose, D. Amidei, K. Anikeev, J. Antos, G. Apollinari, T. Arisawa, A. Artikov, W. Ashmanskas, F. Azfar, P. Azzi-Bacchetta, N. Bacchetta, H. Bachacou, W. Badgett, A. Barbaro-Galtieri, V. E. Barnes, B. A. BarnettS. Baroiant, M. Barone, G. Bauer, F. Bedeschi, S. Behari, S. Belforte, W. H. Bell, G. Bellettini, J. Bellinger, D. Benjamin, A. Beretvas, A. Bhatti, M. Binkley, D. Bisello, M. Bishai, R. E. Blair, C. Blocker, K. Bloom, B. Blumenfeld, A. Bocci, A. Bodek, G. Bolla, A. Bolshov, D. Bortoletto, J. Boudreau, C. Bromberg, E. Brubaker, J. Budagov, H. S. Budd, K. Burkett, G. Busetto, K. L. Byrum, S. Cabrera, M. Campbell, W. Carithers, D. Carlsmith, A. Castro, D. Cauz, A. Cerri, L. Cerrito, J. Chapman, C. Chen, Y. C. Chen, M. Chertok, G. Chiarelli, G. Chlachidze, F. Chlebana, M. L. Chu, J. Y. Chung, W. H. Chung, Y. S. Chung, C. I. Ciobanu, A. G. Clark, M. Coca, A. Connolly, M. Convery, J. Conway, M. Cordelli, J. Cranshaw, R. Culbertson, D. Dagenhart, S. D'Auria, P. De Barbaro, S. De Cecco, S. Dell'Agnello, M. Dell'Orso, S. Demers, L. Demortier, M. Deninno, D. De Pedis, P. F. Derwent, C. Dionisi, J. R. Dittmann, A. Dominguez, S. Donati, M. D'Onofrio, T. Dorigo, N. Eddy, R. Erbacher, D. Errede

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Abstract

We report the first largely model independent measurement of charged particle multiplicities in quark and gluon jets, Nq and Ng, produced at the Fermilab Tevatron in pp̄ collisions with a center-of-mass energy of 1.8 TeV and recorded by the Collider Detector at Fermilab. The measurements are made for jets with average energies of 41 and 53 GeV by counting charged particle tracks in cones with opening angles of θc=0.28, 0.36, and 0.47 rad around the jet axis. The corresponding jet hardness Q=Ejetθc varies in the range from 12 to 25 GeV. At Q=19.2GeV, the ratio of multiplicities r=Ng/Nq is found to be 1.64±0.17, where statistical and systematic uncertainties are added in quadrature. The results are in agreement with resummed perturbative QCD calculations. © 2005 The American Physical Society.

Original language	English
Article number	171802
Journal	Physical Review Letters
Volume	94
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevLett.94.171802
Publication status	Published - 6 May 2005

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Yang, U.-K., Acosta, D., Affolder, T., Albrow, M. G., Ambrose, D., Amidei, D., Anikeev, K., Antos, J., Apollinari, G., Arisawa, T., Artikov, A., Ashmanskas, W., Azfar, F., Azzi-Bacchetta, P., Bacchetta, N., Bachacou, H., Badgett, W., Barbaro-Galtieri, A., Barnes, V. E., ... Errede, D. (2005). Measurement of charged-particle multiplicities in gluon and quark jets in pp̄ collisions at s=1.8TeV. Physical Review Letters, 94(17), Article 171802. https://doi.org/10.1103/PhysRevLett.94.171802

@article{b38a56796c3d48808815a9db13391f34,

title = "Measurement of charged-particle multiplicities in gluon and quark jets in p{\=p} collisions at s=1.8TeV",

abstract = "We report the first largely model independent measurement of charged particle multiplicities in quark and gluon jets, Nq and Ng, produced at the Fermilab Tevatron in p{\=p} collisions with a center-of-mass energy of 1.8 TeV and recorded by the Collider Detector at Fermilab. The measurements are made for jets with average energies of 41 and 53 GeV by counting charged particle tracks in cones with opening angles of θc=0.28, 0.36, and 0.47 rad around the jet axis. The corresponding jet hardness Q=Ejetθc varies in the range from 12 to 25 GeV. At Q=19.2GeV, the ratio of multiplicities r=Ng/Nq is found to be 1.64±0.17, where statistical and systematic uncertainties are added in quadrature. The results are in agreement with resummed perturbative QCD calculations. {\textcopyright} 2005 The American Physical Society.",

author = "Un-Ki Yang and D. Acosta and T. Affolder and Albrow, {M. G.} and D. Ambrose and D. Amidei and K. Anikeev and J. Antos and G. Apollinari and T. Arisawa and A. Artikov and W. Ashmanskas and F. Azfar and P. Azzi-Bacchetta and N. Bacchetta and H. Bachacou and W. Badgett and A. Barbaro-Galtieri and Barnes, {V. E.} and Barnett, {B. A.} and S. Baroiant and M. Barone and G. Bauer and F. Bedeschi and S. Behari and S. Belforte and Bell, {W. H.} and G. Bellettini and J. Bellinger and D. Benjamin and A. Beretvas and A. Bhatti and M. Binkley and D. Bisello and M. Bishai and Blair, {R. E.} and C. Blocker and K. Bloom and B. Blumenfeld and A. Bocci and A. Bodek and G. Bolla and A. Bolshov and D. Bortoletto and J. Boudreau and C. Bromberg and E. Brubaker and J. Budagov and Budd, {H. S.} and K. Burkett and G. Busetto and Byrum, {K. L.} and S. Cabrera and M. Campbell and W. Carithers and D. Carlsmith and A. Castro and D. Cauz and A. Cerri and L. Cerrito and J. Chapman and C. Chen and Chen, {Y. C.} and M. Chertok and G. Chiarelli and G. Chlachidze and F. Chlebana and Chu, {M. L.} and Chung, {J. Y.} and Chung, {W. H.} and Chung, {Y. S.} and Ciobanu, {C. I.} and Clark, {A. G.} and M. Coca and A. Connolly and M. Convery and J. Conway and M. Cordelli and J. Cranshaw and R. Culbertson and D. Dagenhart and S. D'Auria and {De Barbaro}, P. and {De Cecco}, S. and S. Dell'Agnello and M. Dell'Orso and S. Demers and L. Demortier and M. Deninno and {De Pedis}, D. and Derwent, {P. F.} and C. Dionisi and Dittmann, {J. R.} and A. Dominguez and S. Donati and M. D'Onofrio and T. Dorigo and N. Eddy and R. Erbacher and D. Errede",

year = "2005",

month = may,

day = "6",

doi = "10.1103/PhysRevLett.94.171802",

language = "English",

volume = "94",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "17",

}

Yang, U-K, Acosta, D, Affolder, T, Albrow, MG, Ambrose, D, Amidei, D, Anikeev, K, Antos, J, Apollinari, G, Arisawa, T, Artikov, A, Ashmanskas, W, Azfar, F, Azzi-Bacchetta, P, Bacchetta, N, Bachacou, H, Badgett, W, Barbaro-Galtieri, A, Barnes, VE, Barnett, BA, Baroiant, S, Barone, M, Bauer, G, Bedeschi, F, Behari, S, Belforte, S, Bell, WH, Bellettini, G, Bellinger, J, Benjamin, D, Beretvas, A, Bhatti, A, Binkley, M, Bisello, D, Bishai, M, Blair, RE, Blocker, C, Bloom, K, Blumenfeld, B, Bocci, A, Bodek, A, Bolla, G, Bolshov, A, Bortoletto, D, Boudreau, J, Bromberg, C, Brubaker, E, Budagov, J, Budd, HS, Burkett, K, Busetto, G, Byrum, KL, Cabrera, S, Campbell, M, Carithers, W, Carlsmith, D, Castro, A, Cauz, D, Cerri, A, Cerrito, L, Chapman, J, Chen, C, Chen, YC, Chertok, M, Chiarelli, G, Chlachidze, G, Chlebana, F, Chu, ML, Chung, JY, Chung, WH, Chung, YS, Ciobanu, CI, Clark, AG, Coca, M, Connolly, A, Convery, M, Conway, J, Cordelli, M, Cranshaw, J, Culbertson, R, Dagenhart, D, D'Auria, S, De Barbaro, P, De Cecco, S, Dell'Agnello, S, Dell'Orso, M, Demers, S, Demortier, L, Deninno, M, De Pedis, D, Derwent, PF, Dionisi, C, Dittmann, JR, Dominguez, A, Donati, S, D'Onofrio, M, Dorigo, T, Eddy, N, Erbacher, R & Errede, D 2005, 'Measurement of charged-particle multiplicities in gluon and quark jets in pp̄ collisions at s=1.8TeV', Physical Review Letters, vol. 94, no. 17, 171802. https://doi.org/10.1103/PhysRevLett.94.171802

TY - JOUR

T1 - Measurement of charged-particle multiplicities in gluon and quark jets in pp̄ collisions at s=1.8TeV

AU - Yang, Un-Ki

AU - Acosta, D.

AU - Affolder, T.

AU - Albrow, M. G.

AU - Ambrose, D.

AU - Amidei, D.

AU - Anikeev, K.

AU - Antos, J.

AU - Apollinari, G.

AU - Arisawa, T.

AU - Artikov, A.

AU - Ashmanskas, W.

AU - Azfar, F.

AU - Azzi-Bacchetta, P.

AU - Bacchetta, N.

AU - Bachacou, H.

AU - Badgett, W.

AU - Barbaro-Galtieri, A.

AU - Barnes, V. E.

AU - Barnett, B. A.

AU - Baroiant, S.

AU - Barone, M.

AU - Bauer, G.

AU - Bedeschi, F.

AU - Behari, S.

AU - Belforte, S.

AU - Bell, W. H.

AU - Bellettini, G.

AU - Bellinger, J.

AU - Benjamin, D.

AU - Beretvas, A.

AU - Bhatti, A.

AU - Binkley, M.

AU - Bisello, D.

AU - Bishai, M.

AU - Blair, R. E.

AU - Blocker, C.

AU - Bloom, K.

AU - Blumenfeld, B.

AU - Bocci, A.

AU - Bodek, A.

AU - Bolla, G.

AU - Bolshov, A.

AU - Bortoletto, D.

AU - Boudreau, J.

AU - Bromberg, C.

AU - Brubaker, E.

AU - Budagov, J.

AU - Budd, H. S.

AU - Burkett, K.

AU - Busetto, G.

AU - Byrum, K. L.

AU - Cabrera, S.

AU - Campbell, M.

AU - Carithers, W.

AU - Carlsmith, D.

AU - Castro, A.

AU - Cauz, D.

AU - Cerri, A.

AU - Cerrito, L.

AU - Chapman, J.

AU - Chen, C.

AU - Chen, Y. C.

AU - Chertok, M.

AU - Chiarelli, G.

AU - Chlachidze, G.

AU - Chlebana, F.

AU - Chu, M. L.

AU - Chung, J. Y.

AU - Chung, W. H.

AU - Chung, Y. S.

AU - Ciobanu, C. I.

AU - Clark, A. G.

AU - Coca, M.

AU - Connolly, A.

AU - Convery, M.

AU - Conway, J.

AU - Cordelli, M.

AU - Cranshaw, J.

AU - Culbertson, R.

AU - Dagenhart, D.

AU - D'Auria, S.

AU - De Barbaro, P.

AU - De Cecco, S.

AU - Dell'Agnello, S.

AU - Dell'Orso, M.

AU - Demers, S.

AU - Demortier, L.

AU - Deninno, M.

AU - De Pedis, D.

AU - Derwent, P. F.

AU - Dionisi, C.

AU - Dittmann, J. R.

AU - Dominguez, A.

AU - Donati, S.

AU - D'Onofrio, M.

AU - Dorigo, T.

AU - Eddy, N.

AU - Erbacher, R.

AU - Errede, D.

PY - 2005/5/6

Y1 - 2005/5/6

N2 - We report the first largely model independent measurement of charged particle multiplicities in quark and gluon jets, Nq and Ng, produced at the Fermilab Tevatron in pp̄ collisions with a center-of-mass energy of 1.8 TeV and recorded by the Collider Detector at Fermilab. The measurements are made for jets with average energies of 41 and 53 GeV by counting charged particle tracks in cones with opening angles of θc=0.28, 0.36, and 0.47 rad around the jet axis. The corresponding jet hardness Q=Ejetθc varies in the range from 12 to 25 GeV. At Q=19.2GeV, the ratio of multiplicities r=Ng/Nq is found to be 1.64±0.17, where statistical and systematic uncertainties are added in quadrature. The results are in agreement with resummed perturbative QCD calculations. © 2005 The American Physical Society.

AB - We report the first largely model independent measurement of charged particle multiplicities in quark and gluon jets, Nq and Ng, produced at the Fermilab Tevatron in pp̄ collisions with a center-of-mass energy of 1.8 TeV and recorded by the Collider Detector at Fermilab. The measurements are made for jets with average energies of 41 and 53 GeV by counting charged particle tracks in cones with opening angles of θc=0.28, 0.36, and 0.47 rad around the jet axis. The corresponding jet hardness Q=Ejetθc varies in the range from 12 to 25 GeV. At Q=19.2GeV, the ratio of multiplicities r=Ng/Nq is found to be 1.64±0.17, where statistical and systematic uncertainties are added in quadrature. The results are in agreement with resummed perturbative QCD calculations. © 2005 The American Physical Society.

U2 - 10.1103/PhysRevLett.94.171802

DO - 10.1103/PhysRevLett.94.171802

M3 - Article

SN - 0031-9007

VL - 94

JO - Physical Review Letters

JF - Physical Review Letters

IS - 17

M1 - 171802

ER -

Measurement of charged-particle multiplicities in gluon and quark jets in pp̄ collisions at s=1.8TeV

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