A study of W+W-gamma events at LEP

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A study of W+W-gamma events at LEP. / Abbiendi, G ; Ainsley, C ; Akesson, P F et al.
In: Physics Letters B, Vol. 580, No. 1-2, 29.01.2004, p. 17-36.

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

Harvard

Abbiendi, G, Ainsley, C, Akesson, PF, Alexander, G, Allison, J, Amaral, P, Anagnostou, G, Anderson, KJ, Arcelli, S, Asai, S, Axen, D, Azuelos, G, Bailey, I, Barberio, E, Barlow, RJ, Batley, RJ, Bechtle, P, Behnke, T, Bell, KW, Bell, PJ, Bella, G, Bellerive, A, Benelli, G, Bethke, S, Biebel, O, Boeriu, O, Bock, P, Boutemeur, M, Braibant, S, Brigliadori, L, Brown, RM, Buesser, K, Burckhart, HJ, Campana, S, Carnegie, RK, Caron, B, Carter, AA, Carter, JR, Chang, CY, Charlton, DG, Csilling, A, Cuffiani, M, Dado, S, De Roeck, A, De Wolf, EA, Desch, K, Dienes, B, Donkers, M, Dubbert, J, Kormos, L & OPAL Collaboration 2004, 'A study of W+W-gamma events at LEP', Physics Letters B, vol. 580, no. 1-2, pp. 17-36. https://doi.org/10.1016/j.physletb.2003.10.063

APA

Abbiendi, G., Ainsley, C., Akesson, P. F., Alexander, G., Allison, J., Amaral, P., Anagnostou, G., Anderson, K. J., Arcelli, S., Asai, S., Axen, D., Azuelos, G., Bailey, I., Barberio, E., Barlow, R. J., Batley, R. J., Bechtle, P., Behnke, T., Bell, K. W., ... OPAL Collaboration (2004). A study of W+W-gamma events at LEP. Physics Letters B, 580(1-2), 17-36. https://doi.org/10.1016/j.physletb.2003.10.063

Vancouver

Abbiendi G, Ainsley C, Akesson PF, Alexander G, Allison J, Amaral P et al. A study of W+W-gamma events at LEP. Physics Letters B. 2004 Jan 29;580(1-2):17-36. doi: 10.1016/j.physletb.2003.10.063

Author

Abbiendi, G ; Ainsley, C ; Akesson, P F et al. / A study of W+W-gamma events at LEP. In: Physics Letters B. 2004 ; Vol. 580, No. 1-2. pp. 17-36.

Bibtex

@article{177bc43e805f405989bb58c48c5ef0bc,

title = "A study of W+W-gamma events at LEP",

abstract = "A study of W+W- events accompanied by hard photon radiation, Egamma > 2.5 GeV, produced in e(+)e(-) collisions at LEP is presented. Events consistent with being two on-shell W-bosons and an isolated photon are selected from 681 pb(-1) of data recorded at 180 GeV < roots < 209 GeV. From the sample of 187 selected W(+)W(-)gamma candidates with photon energies greater than 2.5 GeV, the W(+)W(-)gamma cross-section is determined at five values of roots. The results are consistent with the Standard Model expectation. Averaging over all energies, the ratio of the observed cross-section to the Standard Model expectation isR(data/SM) = 0.99 +/- 0.09 +/- 0.04,where the errors represent the statistical and systematic uncertainties respectively. These data provide constraints on the related O(alpha) systematic uncertainties on the measurement of the W-boson mass at LEP. Finally, the data are used to derive 95% confidence level upper limits on possible anomalous contributions to the W(+)W(-)gammagamma and W(+)W(-)Z(0)y vertices:-0.020 GeV-2 < a(0)/Lambda(2) < 0.020 GeV-2,-0.053 GeV-2 < a(c)/Lambda(2) < 0.037 GeV-2,-0.16 GeV-2 < a(n)/Lambda(2) < 0.15 GeV-2,where Lambda represents the energy scale for new physics and a(0), a(c) and a(n) are dimensionless coupling constants. (C) 2003 Elsevier B.V. All rights reserved.",

keywords = "GAUGE-BOSON COUPLINGS, W-PAIR PRODUCTION, PRODUCTION CROSS-SECTION, QUARTIC ANOMALOUS COUPLINGS, E(+)E(-) COLLISIONS, MONTE-CARLO, RADIATIVE-CORRECTIONS, BRANCHING FRACTIONS, E+E ANNIHILATION, ENERGIES",

author = "G Abbiendi and C Ainsley and Akesson, {P F} and G Alexander and J Allison and P Amaral and G Anagnostou and Anderson, {K J} and S Arcelli and S Asai and D Axen and G Azuelos and I Bailey and E Barberio and Barlow, {R J} and Batley, {R J} and P Bechtle and T Behnke and Bell, {K W} and Bell, {P J} and G Bella and A Bellerive and G Benelli and S Bethke and O Biebel and O Boeriu and P Bock and M Boutemeur and S Braibant and L Brigliadori and Brown, {R M} and K Buesser and Burckhart, {H J} and S Campana and Carnegie, {R K} and B Caron and Carter, {A A} and Carter, {J R} and Chang, {C Y} and Charlton, {D G} and A Csilling and M Cuffiani and S Dado and {De Roeck}, A and {De Wolf}, {E A} and K Desch and B Dienes and M Donkers and J Dubbert and L Kormos and {OPAL Collaboration}",

year = "2004",

month = jan,

day = "29",

doi = "10.1016/j.physletb.2003.10.063",

language = "English",

volume = "580",

pages = "17--36",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "ELSEVIER SCIENCE BV",

number = "1-2",

}

RIS

TY - JOUR

T1 - A study of W+W-gamma events at LEP

AU - Abbiendi, G

AU - Ainsley, C

AU - Akesson, P F

AU - Alexander, G

AU - Allison, J

AU - Amaral, P

AU - Anagnostou, G

AU - Anderson, K J

AU - Arcelli, S

AU - Asai, S

AU - Axen, D

AU - Azuelos, G

AU - Bailey, I

AU - Barberio, E

AU - Barlow, R J

AU - Batley, R J

AU - Bechtle, P

AU - Behnke, T

AU - Bell, K W

AU - Bell, P J

AU - Bella, G

AU - Bellerive, A

AU - Benelli, G

AU - Bethke, S

AU - Biebel, O

AU - Boeriu, O

AU - Bock, P

AU - Boutemeur, M

AU - Braibant, S

AU - Brigliadori, L

AU - Brown, R M

AU - Buesser, K

AU - Burckhart, H J

AU - Campana, S

AU - Carnegie, R K

AU - Caron, B

AU - Carter, A A

AU - Carter, J R

AU - Chang, C Y

AU - Charlton, D G

AU - Csilling, A

AU - Cuffiani, M

AU - Dado, S

AU - De Roeck, A

AU - De Wolf, E A

AU - Desch, K

AU - Dienes, B

AU - Donkers, M

AU - Dubbert, J

AU - Kormos, L

AU - OPAL Collaboration

PY - 2004/1/29

Y1 - 2004/1/29

N2 - A study of W+W- events accompanied by hard photon radiation, Egamma > 2.5 GeV, produced in e(+)e(-) collisions at LEP is presented. Events consistent with being two on-shell W-bosons and an isolated photon are selected from 681 pb(-1) of data recorded at 180 GeV < roots < 209 GeV. From the sample of 187 selected W(+)W(-)gamma candidates with photon energies greater than 2.5 GeV, the W(+)W(-)gamma cross-section is determined at five values of roots. The results are consistent with the Standard Model expectation. Averaging over all energies, the ratio of the observed cross-section to the Standard Model expectation isR(data/SM) = 0.99 +/- 0.09 +/- 0.04,where the errors represent the statistical and systematic uncertainties respectively. These data provide constraints on the related O(alpha) systematic uncertainties on the measurement of the W-boson mass at LEP. Finally, the data are used to derive 95% confidence level upper limits on possible anomalous contributions to the W(+)W(-)gammagamma and W(+)W(-)Z(0)y vertices:-0.020 GeV-2 < a(0)/Lambda(2) < 0.020 GeV-2,-0.053 GeV-2 < a(c)/Lambda(2) < 0.037 GeV-2,-0.16 GeV-2 < a(n)/Lambda(2) < 0.15 GeV-2,where Lambda represents the energy scale for new physics and a(0), a(c) and a(n) are dimensionless coupling constants. (C) 2003 Elsevier B.V. All rights reserved.

AB - A study of W+W- events accompanied by hard photon radiation, Egamma > 2.5 GeV, produced in e(+)e(-) collisions at LEP is presented. Events consistent with being two on-shell W-bosons and an isolated photon are selected from 681 pb(-1) of data recorded at 180 GeV < roots < 209 GeV. From the sample of 187 selected W(+)W(-)gamma candidates with photon energies greater than 2.5 GeV, the W(+)W(-)gamma cross-section is determined at five values of roots. The results are consistent with the Standard Model expectation. Averaging over all energies, the ratio of the observed cross-section to the Standard Model expectation isR(data/SM) = 0.99 +/- 0.09 +/- 0.04,where the errors represent the statistical and systematic uncertainties respectively. These data provide constraints on the related O(alpha) systematic uncertainties on the measurement of the W-boson mass at LEP. Finally, the data are used to derive 95% confidence level upper limits on possible anomalous contributions to the W(+)W(-)gammagamma and W(+)W(-)Z(0)y vertices:-0.020 GeV-2 < a(0)/Lambda(2) < 0.020 GeV-2,-0.053 GeV-2 < a(c)/Lambda(2) < 0.037 GeV-2,-0.16 GeV-2 < a(n)/Lambda(2) < 0.15 GeV-2,where Lambda represents the energy scale for new physics and a(0), a(c) and a(n) are dimensionless coupling constants. (C) 2003 Elsevier B.V. All rights reserved.

KW - GAUGE-BOSON COUPLINGS

KW - W-PAIR PRODUCTION

KW - PRODUCTION CROSS-SECTION

KW - QUARTIC ANOMALOUS COUPLINGS

KW - E(+)E(-) COLLISIONS

KW - MONTE-CARLO

KW - RADIATIVE-CORRECTIONS

KW - BRANCHING FRACTIONS

KW - E+E ANNIHILATION

KW - ENERGIES

U2 - 10.1016/j.physletb.2003.10.063

DO - 10.1016/j.physletb.2003.10.063

M3 - Journal article

VL - 580

SP - 17

EP - 36

JO - Physics Letters B

JF - Physics Letters B

SN - 0370-2693

IS - 1-2

ER -

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