Measurement of the W mass in e+e- collisions at production threshold

ALEPH Collaboration

doi:10.1016/S0370-2693(97)00460-7

Measurement of the W mass in e⁺e^- collisions at production threshold

ALEPH Collaboration

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

48 Scopus citations

Abstract

In June 1996, the LEP centre-of-mass energy was raised to 161 GeV. Pair production of W bosons in e⁺e^- collisions was observed for the first time by the LEP experiments. An integrated luminosity of 11 pb^-1 was recorded in the ALEPH detector, in which WW candidate events were observed. In 6 events both Ws decay leptonically. In 16 events, one W decays leptonically, the other into hadrons. In the channel where both Ws decay into hadrons, a signal was separated from the large background by means of several multi-variate analyses. The W pair cross-section is measured to be σww = 4.23 ± 0.73(stat.) ± 0.19(syst.) pb. From this cross-section, the W mass is derived within the framework of the Standard Model: m_w = 80.14 ± 0.34(stat.) ± 0.09(syst.) ± 0.03(LEP energy) GeV/c²

Original language	English (US)
Pages (from-to)	347-362
Number of pages	16
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	401
Issue number	3-4
DOIs	https://doi.org/10.1016/S0370-2693(97)00460-7
State	Published - May 29 1997
Externally published	Yes

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1016/S0370-2693(97)00460-7

Cite this

@article{22af0f3a2c7d4bf2b785f31d7f102aa9,

title = "Measurement of the W mass in e+e- collisions at production threshold",

abstract = "In June 1996, the LEP centre-of-mass energy was raised to 161 GeV. Pair production of W bosons in e+e- collisions was observed for the first time by the LEP experiments. An integrated luminosity of 11 pb-1 was recorded in the ALEPH detector, in which WW candidate events were observed. In 6 events both Ws decay leptonically. In 16 events, one W decays leptonically, the other into hadrons. In the channel where both Ws decay into hadrons, a signal was separated from the large background by means of several multi-variate analyses. The W pair cross-section is measured to be σww = 4.23 ± 0.73(stat.) ± 0.19(syst.) pb. From this cross-section, the W mass is derived within the framework of the Standard Model: mw = 80.14 ± 0.34(stat.) ± 0.09(syst.) ± 0.03(LEP energy) GeV/c2",

author = "\{ALEPH Collaboration\} and R. Barate and D. Buskulic and D. Decamp and P. Ghez and C. Goy and Lees, \{J. P.\} and A. Lucotte and Minard, \{M. N.\} and Nief, \{J. Y.\} and B. Pietrzyk and Casado, \{M. P.\} and M. Chmeissani and P. Comas and Crespo, \{J. M.\} and M. Delfino and E. Fernandez and M. Fernandez-Bosman and Ll Garrido and A. Juste and M. Martinez and R. Miquel and Mir, \{Ll M.\} and S. Orteu and C. Padilla and Park, \{I. C.\} and A. Pascual and Perlas, \{J. A.\} and I. Riu and F. Sanchez and F. Teubert and A. Colaleo and D. Creanza and \{de Palma\}, M. and G. Gelao and G. Iaselli and G. Maggi and M. Maggi and N. Marinelli and S. Nuzzo and A. Ranieri and G. Raso and F. Ruggieri and G. Selvaggi and L. Silvestris and P. Tempesta and A. Tricomi and G. Zito and X. Huang and J. Lin and P. Elmer",

note = "Funding Information: Spain I6 Supportedb y the Bundesministeriumf ur Bildung, Wissenschaft. Forschung und Technologie, Germany. I7 Supported by the Direction des Sciences de la Matitre, C.E.A. Is Supported by Fonds zur Fijrderung der wissenschaftlichen Forschung, Austria. I{\textquoteright}) Supported by the US Departmentof Energy, grant DE-FG03-92ER40689. x1A lso at Istituto di Matematica e Fisica, Universita di Sassari, Sassari, Italy. 21A lso at CERN, 1211 Geneva 23, Switzerland. 22P ermanenta ddress: Kangnung National University, Kangnung, Korea.",

year = "1997",

month = may,

day = "29",

doi = "10.1016/S0370-2693(97)00460-7",

language = "English (US)",

volume = "401",

pages = "347--362",

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

issn = "0370-2693",

publisher = "Elsevier B.V.",

number = "3-4",

}

TY - JOUR

T1 - Measurement of the W mass in e+e- collisions at production threshold

AU - ALEPH Collaboration

AU - Barate, R.

AU - Buskulic, D.

AU - Decamp, D.

AU - Ghez, P.

AU - Goy, C.

AU - Lees, J. P.

AU - Lucotte, A.

AU - Minard, M. N.

AU - Nief, J. Y.

AU - Pietrzyk, B.

AU - Casado, M. P.

AU - Chmeissani, M.

AU - Comas, P.

AU - Crespo, J. M.

AU - Delfino, M.

AU - Fernandez, E.

AU - Fernandez-Bosman, M.

AU - Garrido, Ll

AU - Juste, A.

AU - Martinez, M.

AU - Miquel, R.

AU - Mir, Ll M.

AU - Orteu, S.

AU - Padilla, C.

AU - Park, I. C.

AU - Pascual, A.

AU - Perlas, J. A.

AU - Riu, I.

AU - Sanchez, F.

AU - Teubert, F.

AU - Colaleo, A.

AU - Creanza, D.

AU - de Palma, M.

AU - Gelao, G.

AU - Iaselli, G.

AU - Maggi, G.

AU - Maggi, M.

AU - Marinelli, N.

AU - Nuzzo, S.

AU - Ranieri, A.

AU - Raso, G.

AU - Ruggieri, F.

AU - Selvaggi, G.

AU - Silvestris, L.

AU - Tempesta, P.

AU - Tricomi, A.

AU - Zito, G.

AU - Huang, X.

AU - Lin, J.

AU - Elmer, P.

N1 - Funding Information: Spain I6 Supportedb y the Bundesministeriumf ur Bildung, Wissenschaft. Forschung und Technologie, Germany. I7 Supported by the Direction des Sciences de la Matitre, C.E.A. Is Supported by Fonds zur Fijrderung der wissenschaftlichen Forschung, Austria. I’) Supported by the US Departmentof Energy, grant DE-FG03-92ER40689. x1A lso at Istituto di Matematica e Fisica, Universita di Sassari, Sassari, Italy. 21A lso at CERN, 1211 Geneva 23, Switzerland. 22P ermanenta ddress: Kangnung National University, Kangnung, Korea.

PY - 1997/5/29

Y1 - 1997/5/29

N2 - In June 1996, the LEP centre-of-mass energy was raised to 161 GeV. Pair production of W bosons in e+e- collisions was observed for the first time by the LEP experiments. An integrated luminosity of 11 pb-1 was recorded in the ALEPH detector, in which WW candidate events were observed. In 6 events both Ws decay leptonically. In 16 events, one W decays leptonically, the other into hadrons. In the channel where both Ws decay into hadrons, a signal was separated from the large background by means of several multi-variate analyses. The W pair cross-section is measured to be σww = 4.23 ± 0.73(stat.) ± 0.19(syst.) pb. From this cross-section, the W mass is derived within the framework of the Standard Model: mw = 80.14 ± 0.34(stat.) ± 0.09(syst.) ± 0.03(LEP energy) GeV/c2

AB - In June 1996, the LEP centre-of-mass energy was raised to 161 GeV. Pair production of W bosons in e+e- collisions was observed for the first time by the LEP experiments. An integrated luminosity of 11 pb-1 was recorded in the ALEPH detector, in which WW candidate events were observed. In 6 events both Ws decay leptonically. In 16 events, one W decays leptonically, the other into hadrons. In the channel where both Ws decay into hadrons, a signal was separated from the large background by means of several multi-variate analyses. The W pair cross-section is measured to be σww = 4.23 ± 0.73(stat.) ± 0.19(syst.) pb. From this cross-section, the W mass is derived within the framework of the Standard Model: mw = 80.14 ± 0.34(stat.) ± 0.09(syst.) ± 0.03(LEP energy) GeV/c2

UR - https://www.scopus.com/pages/publications/0002392557

UR - https://www.scopus.com/pages/publications/0002392557#tab=citedBy

U2 - 10.1016/S0370-2693(97)00460-7

DO - 10.1016/S0370-2693(97)00460-7

M3 - Article

AN - SCOPUS:0002392557

SN - 0370-2693

VL - 401

SP - 347

EP - 362

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 -

Measurement of the W mass in e⁺e^- collisions at production threshold

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