W boson polarisation at LEP2

G. Abbiendi; C. Ainsley; P. F. Åkesson; G. Alexander; J. Allison; P. Amaral; G. Anagnostou; K. J. Anderson; S. Arcelli; S. Asai; D. Axen; G. Azuelos; I. Bailey; E. Barberio; T. Barillari; R. J. Barlow; R. J. Batley; P. Bechtle; T. Behnke; K. W. Bell; P. J. Bell; G. Bella; A. Bellerive; G. Benelli; S. Bethke; O. Biebel; O. Boeriu; P. Bock; M. Boutemeur; S. Braibant; L. Brigliadori; R. M. Brown; K. Buesser; H. J. Burckhart; S. Campana; R. K. Carnegie; A. A. Carter; J. R. Carter; C. Y. Chang; D. G. Charlton; C. Ciocca; J. Couchman; A. Csilling; M. Cuffiani; S. Dado; A. de Roeck; E. A. de Wolf; K. Desch; B. Dienes; M. Donkers; J. Dubbert; E. Duchovni; G. Duckeck; I. P. Duerdoth; E. Etzion; F. Fabbri; L. Feld; P. Ferrari; F. Fiedler; I. Fleck; M. Ford; A. Frey; P. Gagnon; J. W. Gary; G. Gaycken; C. Geich-Gimbel; G. Giacomelli; P. Giacomelli; M. Giunta; J. Goldberg; E. Gross; J. Grunhaus; M. Gruwé; P. O. Günther; A. Gupta; C. Hajdu; M. Hamann; G. G. Hanson; A. Harel; M. Hauschild; C. M. Hawkes; R. Hawkings; R. J. Hemingway; G. Herten; R. D. Heuer; J. C. Hill; K. Hodman; D. Horváth; P. Igo-Kemenes; K. Ishii; H. Jeremie; P. Jovanovic; T. R. Junk; N. Kanaya; J. Kanzaki; D. Karlen; K. Kawagoe; T. Kawamoto; R. K. Keeler; R. G. Kellogg; B. W. Kennedy; K. Klein; A. Klier; S. Kluth; T. Kobayashi; M. Kobel; S. Komamiya; T. Krämer; P. Krieger; J. von Krogh; K. Kruger; T. Kuhl; M. Kupper; G. D. Lafferty; H. Landsman; D. Lanske; J. G. Layter; D. Lellouch; J. Letts; L. Levinson; J. Lillich; S. L. Lloyd; F. K. Loebinger; J. Lu; A. Ludwig; J. Ludwig; W. Mader; S. Marcellini; A. J. Martin; G. Masetti; T. Mashimo; P. Mättig; J. McKenna; R. A. McPherson; F. Meijers; W. Menges; F. S. Merritt; H. Mes; A. Michelini; S. Mihara; G. Mikenberg; D. J. Miller; S. Moed; W. Mohr; T. Mori; A. Mutter; K. Nagai; I. Nakamura; H. Nanjo; H. A. Neal; R. Nisius; S. W. O'Neale; A. Oh; A. Okpara; M. J. Oreglia; S. Orito; C. Pahl; G. Pásztor; J. R. Pater; J. E. Pilcher; J. Pinfold; D. E. Plane; B. Poli; O. Pooth; M. Przybycień; A. Quadt; K. Rabbertz; C. Rembser; P. Renkel; J. M. Roney; S. Rosati; Y. Rozen; K. Runge; K. Sachs; T. Saeki; E. K.G. Sarkisyan; A. D. Schaile; O. Schaile; P. Scharff-Hansen; J. Schieck; T. Schörner-Sadenius; M. Schröder; M. Schumacher; W. G. Scott; R. Seuster; T. G. Shears; B. C. Shen; P. Sherwood; A. Skuja; A. M. Smith; R. Sobie; S. Söldner-Rembold; F. Spano; A. Stahl; D. Strom; R. Ströhmer; S. Tarem; M. Tasevsky; R. Teuscher; M. A. Thomson; E. Torrence; D. Toya; P. Tran; I. Trigger; Z. Trócsányi; E. Tsur; M. F. Turner-Watson; I. Ueda; B. Ujvári; C. F. Vollmer; P. Vannerem; R. Vértesi; M. Verzocchi; H. Voss; J. Vossebeld; D. Waller; C. P. Ward; D. R. Ward; P. M. Watkins; A. T. Watson; N. K. Watson; P. S. Wells; T. Wengler; N. Wermes; D. Wetterling; G. W. Wilson; J. A. Wilson; G. Wolf; T. R. Wyatt; S. Yamashita; D. Zer-Zion; L. Zivkovic

doi:10.1016/j.physletb.2004.02.003

W boson polarisation at LEP2

G. Abbiendi^*
, C. Ainsley
, P. F. Åkesson
, G. Alexander
, J. Allison
, P. Amaral
, G. Anagnostou
, K. J. Anderson
, S. Arcelli
, S. Asai
, D. Axen
, G. Azuelos
, I. Bailey
, E. Barberio
, T. Barillari
, R. J. Barlow
, R. J. Batley
, P. Bechtle
, T. Behnke
, K. W. Bell

P. J. Bell, G. Bella, A. Bellerive, G. Benelli, S. Bethke, O. Biebel, O. Boeriu, P. Bock, M. Boutemeur, S. Braibant, L. Brigliadori, R. M. Brown, K. Buesser, H. J. Burckhart, S. Campana, R. K. Carnegie, A. A. Carter, J. R. Carter, C. Y. Chang, D. G. Charlton, C. Ciocca, J. Couchman, A. Csilling, M. Cuffiani, S. Dado, A. de Roeck, E. A. de Wolf, K. Desch, B. Dienes, M. Donkers, J. Dubbert, E. Duchovni, G. Duckeck, I. P. Duerdoth, E. Etzion, F. Fabbri, L. Feld, P. Ferrari, F. Fiedler, I. Fleck, M. Ford, A. Frey, P. Gagnon, J. W. Gary, G. Gaycken, C. Geich-Gimbel, G. Giacomelli, P. Giacomelli, M. Giunta, J. Goldberg, E. Gross, J. Grunhaus, M. Gruwé, P. O. Günther, A. Gupta, C. Hajdu, M. Hamann, G. G. Hanson, A. Harel, M. Hauschild, C. M. Hawkes, R. Hawkings, R. J. Hemingway, G. Herten, R. D. Heuer, J. C. Hill, K. Hodman, D. Horváth, P. Igo-Kemenes, K. Ishii, H. Jeremie, P. Jovanovic, T. R. Junk, N. Kanaya, J. Kanzaki, D. Karlen, K. Kawagoe, T. Kawamoto, R. K. Keeler, R. G. Kellogg, B. W. Kennedy, K. Klein, A. Klier, S. Kluth, T. Kobayashi, M. Kobel, S. Komamiya, T. Krämer, P. Krieger, J. von Krogh, K. Kruger, T. Kuhl, M. Kupper, G. D. Lafferty, H. Landsman, D. Lanske, J. G. Layter, D. Lellouch, J. Letts, L. Levinson, J. Lillich, S. L. Lloyd, F. K. Loebinger, J. Lu, A. Ludwig, J. Ludwig, W. Mader, S. Marcellini, A. J. Martin, G. Masetti, T. Mashimo, P. Mättig, J. McKenna, R. A. McPherson, F. Meijers, W. Menges, F. S. Merritt, H. Mes, A. Michelini, S. Mihara, G. Mikenberg, D. J. Miller, S. Moed, W. Mohr, T. Mori, A. Mutter, K. Nagai, I. Nakamura, H. Nanjo, H. A. Neal, R. Nisius, S. W. O'Neale, A. Oh, A. Okpara, M. J. Oreglia, S. Orito, C. Pahl, G. Pásztor, J. R. Pater, J. E. Pilcher, J. Pinfold, D. E. Plane, B. Poli, O. Pooth, M. Przybycień, A. Quadt, K. Rabbertz, C. Rembser, P. Renkel, J. M. Roney, S. Rosati, Y. Rozen, K. Runge, K. Sachs, T. Saeki, E. K.G. Sarkisyan, A. D. Schaile, O. Schaile, P. Scharff-Hansen, J. Schieck, T. Schörner-Sadenius, M. Schröder, M. Schumacher, W. G. Scott, R. Seuster, T. G. Shears, B. C. Shen, P. Sherwood, A. Skuja, A. M. Smith, R. Sobie, S. Söldner-Rembold, F. Spano, A. Stahl, D. Strom, R. Ströhmer, S. Tarem, M. Tasevsky, R. Teuscher, M. A. Thomson, E. Torrence, D. Toya, P. Tran, I. Trigger, Z. Trócsányi, E. Tsur, M. F. Turner-Watson, I. Ueda, B. Ujvári, C. F. Vollmer, P. Vannerem, R. Vértesi, M. Verzocchi, H. Voss, J. Vossebeld, D. Waller, C. P. Ward, D. R. Ward, P. M. Watkins, A. T. Watson, N. K. Watson, P. S. Wells, T. Wengler, N. Wermes, D. Wetterling, G. W. Wilson, J. A. Wilson, G. Wolf, T. R. Wyatt, S. Yamashita, D. Zer-Zion, L. Zivkovic

^*Corresponding author for this work

School of Physics and Astronomy

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

27 Scopus citations

Abstract

Elements of the spin density matrix for W bosons in e⁺e ^-→W⁺W ^-→qq̄′ℓν_ℓ events are measured from data recorded by the OPAL detector at LEP. This information is used to calculate polarised differential cross-sections and to search for CP-violating effects. Results are presented for W bosons produced in e⁺e ^- Collisions with centre-of-mass energies between 183 GeV and 209 GeV. The average fraction of W bosons that are longitudinally polarised is found to be (23.9±2.1±1.1)% compared to a Standard Model prediction of (23.9±0.1)%. All results are consistent with CP conservation.

Original language	English
Pages (from-to)	223-236
Number of pages	14
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	585
Issue number	3-4
DOIs	https://doi.org/10.1016/j.physletb.2004.02.003
State	Published - 15 Apr 2004

Funding

Funders
Ministry of Education, Culture, Sports, Science and Technology

Access to Document

10.1016/j.physletb.2004.02.003

Cite this

Abbiendi, G., Ainsley, C., Åkesson, 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., Barillari, T., Barlow, R. J., Batley, R. J., Bechtle, P., Behnke, T., ... Zivkovic, L. (2004). W boson polarisation at LEP2. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 585(3-4), 223-236. https://doi.org/10.1016/j.physletb.2004.02.003

@article{8aa5d86fa2d1448589edaccc644724fa,

title = "W boson polarisation at LEP2",

abstract = "Elements of the spin density matrix for W bosons in e+e -→W+W -→q{\=q}′ℓνℓ events are measured from data recorded by the OPAL detector at LEP. This information is used to calculate polarised differential cross-sections and to search for CP-violating effects. Results are presented for W bosons produced in e+e - Collisions with centre-of-mass energies between 183 GeV and 209 GeV. The average fraction of W bosons that are longitudinally polarised is found to be (23.9±2.1±1.1)\% compared to a Standard Model prediction of (23.9±0.1)\%. All results are consistent with CP conservation.",

author = "G. Abbiendi and C. Ainsley and {\AA}kesson, \{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 T. Barillari 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 Carter, \{A. A.\} and Carter, \{J. R.\} and Chang, \{C. Y.\} and Charlton, \{D. G.\} and C. Ciocca and J. Couchman 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 E. Duchovni and G. Duckeck and Duerdoth, \{I. P.\} and E. Etzion and F. Fabbri and L. Feld and P. Ferrari and F. Fiedler and I. Fleck and M. Ford and A. Frey and P. Gagnon and Gary, \{J. W.\} and G. Gaycken and C. Geich-Gimbel and G. Giacomelli and P. Giacomelli and M. Giunta and J. Goldberg and E. Gross and J. Grunhaus and M. Gruw{\'e} and G{\"u}nther, \{P. O.\} and A. Gupta and C. Hajdu and M. Hamann and Hanson, \{G. G.\} and A. Harel and M. Hauschild and Hawkes, \{C. M.\} and R. Hawkings and Hemingway, \{R. J.\} and G. Herten and Heuer, \{R. D.\} and Hill, \{J. C.\} and K. Hodman and D. Horv{\'a}th and P. Igo-Kemenes and K. Ishii and H. Jeremie and P. Jovanovic and Junk, \{T. R.\} and N. Kanaya and J. Kanzaki and D. Karlen and K. Kawagoe and T. Kawamoto and Keeler, \{R. K.\} and Kellogg, \{R. G.\} and Kennedy, \{B. W.\} and K. Klein and A. Klier and S. Kluth and T. Kobayashi and M. Kobel and S. Komamiya and T. Kr{\"a}mer and P. Krieger and \{von Krogh\}, J. and K. Kruger and T. Kuhl and M. Kupper and Lafferty, \{G. D.\} and H. Landsman and D. Lanske and Layter, \{J. G.\} and D. Lellouch and J. Letts and L. Levinson and J. Lillich and Lloyd, \{S. L.\} and Loebinger, \{F. K.\} and J. Lu and A. Ludwig and J. Ludwig and W. Mader and S. Marcellini and Martin, \{A. J.\} and G. Masetti and T. Mashimo and P. M{\"a}ttig and J. McKenna and McPherson, \{R. A.\} and F. Meijers and W. Menges and Merritt, \{F. S.\} and H. Mes and A. Michelini and S. Mihara and G. Mikenberg and Miller, \{D. J.\} and S. Moed and W. Mohr and T. Mori and A. Mutter and K. Nagai and I. Nakamura and H. Nanjo and Neal, \{H. A.\} and R. Nisius and O'Neale, \{S. W.\} and A. Oh and A. Okpara and Oreglia, \{M. J.\} and S. Orito and C. Pahl and G. P{\'a}sztor and Pater, \{J. R.\} and Pilcher, \{J. E.\} and J. Pinfold and Plane, \{D. E.\} and B. Poli and O. Pooth and M. Przybycie{\'n} and A. Quadt and K. Rabbertz and C. Rembser and P. Renkel and Roney, \{J. M.\} and S. Rosati and Y. Rozen and K. Runge and K. Sachs and T. Saeki and Sarkisyan, \{E. K.G.\} and Schaile, \{A. D.\} and O. Schaile and P. Scharff-Hansen and J. Schieck and T. Sch{\"o}rner-Sadenius and M. Schr{\"o}der and M. Schumacher and Scott, \{W. G.\} and R. Seuster and Shears, \{T. G.\} and Shen, \{B. C.\} and P. Sherwood and A. Skuja and Smith, \{A. M.\} and R. Sobie and S. S{\"o}ldner-Rembold and F. Spano and A. Stahl and D. Strom and R. Str{\"o}hmer and S. Tarem and M. Tasevsky and R. Teuscher and Thomson, \{M. A.\} and E. Torrence and D. Toya and P. Tran and I. Trigger and Z. Tr{\'o}cs{\'a}nyi and E. Tsur and Turner-Watson, \{M. F.\} and I. Ueda and B. Ujv{\'a}ri and Vollmer, \{C. F.\} and P. Vannerem and R. V{\'e}rtesi and M. Verzocchi and H. Voss and J. Vossebeld and D. Waller and Ward, \{C. P.\} and Ward, \{D. R.\} and Watkins, \{P. M.\} and Watson, \{A. T.\} and Watson, \{N. K.\} and Wells, \{P. S.\} and T. Wengler and N. Wermes and D. Wetterling and Wilson, \{G. W.\} and Wilson, \{J. A.\} and G. Wolf and Wyatt, \{T. R.\} and S. Yamashita and D. Zer-Zion and L. Zivkovic",

note = "Funding Information: Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT) and a grant under the MEXT International Science Research Program, ",

year = "2004",

month = apr,

day = "15",

doi = "10.1016/j.physletb.2004.02.003",

language = "אנגלית",

volume = "585",

pages = "223--236",

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

issn = "0370-2693",

publisher = "Elsevier B.V.",

number = "3-4",

}

Abbiendi, G, Ainsley, C, Åkesson, PF, Alexander, G, Allison, J, Amaral, P, Anagnostou, G, Anderson, KJ, Arcelli, S, Asai, S, Axen, D, Azuelos, G, Bailey, I, Barberio, E, Barillari, T, 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, Carter, AA, Carter, JR, Chang, CY, Charlton, DG, Ciocca, C, Couchman, J, Csilling, A, Cuffiani, M, Dado, S, de Roeck, A, de Wolf, EA, Desch, K, Dienes, B, Donkers, M, Dubbert, J, Duchovni, E, Duckeck, G, Duerdoth, IP, Etzion, E, Fabbri, F, Feld, L, Ferrari, P, Fiedler, F, Fleck, I, Ford, M, Frey, A, Gagnon, P, Gary, JW, Gaycken, G, Geich-Gimbel, C, Giacomelli, G, Giacomelli, P, Giunta, M, Goldberg, J, Gross, E, Grunhaus, J, Gruwé, M, Günther, PO, Gupta, A, Hajdu, C, Hamann, M, Hanson, GG, Harel, A, Hauschild, M, Hawkes, CM, Hawkings, R, Hemingway, RJ, Herten, G, Heuer, RD, Hill, JC, Hodman, K, Horváth, D, Igo-Kemenes, P, Ishii, K, Jeremie, H, Jovanovic, P, Junk, TR, Kanaya, N, Kanzaki, J, Karlen, D, Kawagoe, K, Kawamoto, T, Keeler, RK, Kellogg, RG, Kennedy, BW, Klein, K, Klier, A, Kluth, S, Kobayashi, T, Kobel, M, Komamiya, S, Krämer, T, Krieger, P, von Krogh, J, Kruger, K, Kuhl, T, Kupper, M, Lafferty, GD, Landsman, H, Lanske, D, Layter, JG, Lellouch, D, Letts, J, Levinson, L, Lillich, J, Lloyd, SL, Loebinger, FK, Lu, J, Ludwig, A, Ludwig, J, Mader, W, Marcellini, S, Martin, AJ, Masetti, G, Mashimo, T, Mättig, P, McKenna, J, McPherson, RA, Meijers, F, Menges, W, Merritt, FS, Mes, H, Michelini, A, Mihara, S, Mikenberg, G, Miller, DJ, Moed, S, Mohr, W, Mori, T, Mutter, A, Nagai, K, Nakamura, I, Nanjo, H, Neal, HA, Nisius, R, O'Neale, SW, Oh, A, Okpara, A, Oreglia, MJ, Orito, S, Pahl, C, Pásztor, G, Pater, JR, Pilcher, JE, Pinfold, J, Plane, DE, Poli, B, Pooth, O, Przybycień, M, Quadt, A, Rabbertz, K, Rembser, C, Renkel, P, Roney, JM, Rosati, S, Rozen, Y, Runge, K, Sachs, K, Saeki, T, Sarkisyan, EKG, Schaile, AD, Schaile, O, Scharff-Hansen, P, Schieck, J, Schörner-Sadenius, T, Schröder, M, Schumacher, M, Scott, WG, Seuster, R, Shears, TG, Shen, BC, Sherwood, P, Skuja, A, Smith, AM, Sobie, R, Söldner-Rembold, S, Spano, F, Stahl, A, Strom, D, Ströhmer, R, Tarem, S, Tasevsky, M, Teuscher, R, Thomson, MA, Torrence, E, Toya, D, Tran, P, Trigger, I, Trócsányi, Z, Tsur, E, Turner-Watson, MF, Ueda, I, Ujvári, B, Vollmer, CF, Vannerem, P, Vértesi, R, Verzocchi, M, Voss, H, Vossebeld, J, Waller, D, Ward, CP, Ward, DR, Watkins, PM, Watson, AT, Watson, NK, Wells, PS, Wengler, T, Wermes, N, Wetterling, D, Wilson, GW, Wilson, JA, Wolf, G, Wyatt, TR, Yamashita, S, Zer-Zion, D & Zivkovic, L 2004, 'W boson polarisation at LEP2', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 585, no. 3-4, pp. 223-236. https://doi.org/10.1016/j.physletb.2004.02.003

TY - JOUR

T1 - W boson polarisation at LEP2

AU - Abbiendi, G.

AU - Ainsley, C.

AU - Åkesson, 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 - Barillari, T.

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 - Carter, A. A.

AU - Carter, J. R.

AU - Chang, C. Y.

AU - Charlton, D. G.

AU - Ciocca, C.

AU - Couchman, J.

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 - Duchovni, E.

AU - Duckeck, G.

AU - Duerdoth, I. P.

AU - Etzion, E.

AU - Fabbri, F.

AU - Feld, L.

AU - Ferrari, P.

AU - Fiedler, F.

AU - Fleck, I.

AU - Ford, M.

AU - Frey, A.

AU - Gagnon, P.

AU - Gary, J. W.

AU - Gaycken, G.

AU - Geich-Gimbel, C.

AU - Giacomelli, G.

AU - Giacomelli, P.

AU - Giunta, M.

AU - Goldberg, J.

AU - Gross, E.

AU - Grunhaus, J.

AU - Gruwé, M.

AU - Günther, P. O.

AU - Gupta, A.

AU - Hajdu, C.

AU - Hamann, M.

AU - Hanson, G. G.

AU - Harel, A.

AU - Hauschild, M.

AU - Hawkes, C. M.

AU - Hawkings, R.

AU - Hemingway, R. J.

AU - Herten, G.

AU - Heuer, R. D.

AU - Hill, J. C.

AU - Hodman, K.

AU - Horváth, D.

AU - Igo-Kemenes, P.

AU - Ishii, K.

AU - Jeremie, H.

AU - Jovanovic, P.

AU - Junk, T. R.

AU - Kanaya, N.

AU - Kanzaki, J.

AU - Karlen, D.

AU - Kawagoe, K.

AU - Kawamoto, T.

AU - Keeler, R. K.

AU - Kellogg, R. G.

AU - Kennedy, B. W.

AU - Klein, K.

AU - Klier, A.

AU - Kluth, S.

AU - Kobayashi, T.

AU - Kobel, M.

AU - Komamiya, S.

AU - Krämer, T.

AU - Krieger, P.

AU - von Krogh, J.

AU - Kruger, K.

AU - Kuhl, T.

AU - Kupper, M.

AU - Lafferty, G. D.

AU - Landsman, H.

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N1 - Funding Information: Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT) and a grant under the MEXT International Science Research Program,

PY - 2004/4/15

Y1 - 2004/4/15

N2 - Elements of the spin density matrix for W bosons in e+e -→W+W -→qq̄′ℓνℓ events are measured from data recorded by the OPAL detector at LEP. This information is used to calculate polarised differential cross-sections and to search for CP-violating effects. Results are presented for W bosons produced in e+e - Collisions with centre-of-mass energies between 183 GeV and 209 GeV. The average fraction of W bosons that are longitudinally polarised is found to be (23.9±2.1±1.1)% compared to a Standard Model prediction of (23.9±0.1)%. All results are consistent with CP conservation.

AB - Elements of the spin density matrix for W bosons in e+e -→W+W -→qq̄′ℓνℓ events are measured from data recorded by the OPAL detector at LEP. This information is used to calculate polarised differential cross-sections and to search for CP-violating effects. Results are presented for W bosons produced in e+e - Collisions with centre-of-mass energies between 183 GeV and 209 GeV. The average fraction of W bosons that are longitudinally polarised is found to be (23.9±2.1±1.1)% compared to a Standard Model prediction of (23.9±0.1)%. All results are consistent with CP conservation.

UR - https://www.scopus.com/pages/publications/10444253735

U2 - 10.1016/j.physletb.2004.02.003

DO - 10.1016/j.physletb.2004.02.003

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AN - SCOPUS:10444253735

SN - 0370-2693

VL - 585

SP - 223

EP - 236

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 - 3-4

ER -

W boson polarisation at LEP2

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