Measurement of the mass and width of the W boson in e+e- collisions at 
                
                  
                
                $\sqrt{s}$
               = 161–209 GeV

Abdallah, J.; Abreu, P.; Adam, W.; Adžić, P.; Albrecht, Thomas; Alemany–Fernández, R.; Allmendinger, T.; Allport, P. P.; Amaldi, U.; Amapane, N.; Amato, S.; Anashkin, E.; Andreazza, A.; Andringa, S.; Anjos, N.; Antilogus, P.; Apel, W. D.; Arnoud, Y.; Ask, S.; Åsman, B.; Augustin, J. E.; Augustinus, A.; Baillon, P.; Ballestrero, A.; Bambade, P.; Barbier, R.; Bardin, D. Y.; Barker, G. J.; Baroncelli, A.; Battaglia, M.; Baubillier, M.; Becks, K. H.; Begalli, M.; Behrmann, A.; Ben-Haim, E.; Benekos, N.; Benvenuti, A. C.; Bérat, C.; Berggren, M.; Bertrand, Daniel; Besançon, M.; Besson, N.; Blöch, D.; Blom, M.; Bluj, M.; Bonesini, M.; Boonekamp, M.; Booth, P.S.L.; Borisov, G.; Botner, O.; Bouquet, B.; Bowcock, T. J. V.; Boyko, I. R.; Bračko, M.; Brenner, R.; Brodet, E.; Brückman, P.; Brunet, J. M.; Buschbeck, B.; Buschmann, P.; Calvi, M.; Camporesi, T.; Canale, V.; Carena, F.; Castro, N. F.; Cavallo, F. R.; Chapkin, M.; Charpentier, Ph.; Checchia, P.; Chierici, R.; Chliapnikov, P.; Chudoba, J.; Chung, S. U.; Cieślik, K.; Collins, P.; Contri, R.; Cosme, G.; Cossutti, F.; Costa, M. J.; Crennell, D.; Cuevas, J.; D’Hondt, J.; Silva, T. da; Silva, W. Da; Ricca, G. Della; Angelis, A. De; Boer, W. De; Clercq, C. De; Lotto, B. De; Maria, N. De; Min, A. De; Paula, L. De; Ciaccio, L. Di; Simone, A. Di; Doroba, K.; Drees, J.; Duperrin, A.; Eigen, G.; Ekelöf, T.; Ellert, M.; Elsing, M.; Santo, M. C. Espírito; Fanourakis, G.; Fassouliotis, D.; Feindt, M.; Fernández, J. P.; Ferrer, A.; Ferro, F.; Flagmeyer, U.; Foeth, H.; Fokitis, E.; Fulda-Quenzer, F.; Fuster, J.; Gandelman, M.; García, C.; Gavillet, Ph.; Gazis, E. N.; Gokieli, R.; Golob, B.; Gómez-Ceballos, G.; Gonçalves, P.; Graziani, E.; Grosdidier, G.; Grzelak, K.; Guy, J.; Haag, C.; Hallgren, A.; Hamacher, K.; Hamilton, K.; Haug, S.; Hauler, F.; Hedberg, V.; Hennecke, M.; Hoffman, J.; Holmgren, S. O.; Holt, P. J.; Houlden, M.; Jackson, J.; Jarlskog, G.; Jarry, P.; Jeans, D.; Johansson, Erik; Jönsson, P.; Joram, C.; Jungermann, L.; Kapusta, F.; Katsanevas, S.; Katsoufis, E.; Kernel, G.; Kerševan, B. P.; Kerzel, U.; King, B. T.; Kjaer, N. J.; Kluit, P.; Kokkinias, P.; Kourkoumelis, C.; Kouznetsov, O.; Krumstein, Z.; Kucharczyk, M.; Lämsä, J.; Leder, G.; Ledroit, F.; Leinonen, L.; Leitner, R.; Lemonne, J.; Lepeltier, V.; Lesiak, T.; Liebig, W.; Liko, D.; Lipniacka, A.; Lopes, J. H.; Lopez, J. M.; Loukas, D.; Lutz, P.; Lyons, L.; MacNaughton, J.; Malek, A.; Maltezos, S.; Mandl, F.; Marco, J.; Marco, R.; Maréchal, B.; Margoni, M.; Marin, J. C.; Mariotti, C.; Μάρκου, Α.; Martínez-Rivero, C.; Mašík, J.; Mastroyiannopoulos, N.; Matorras, F.; Matteuzzi, C.; Mazzucato, F.; Mazzucato, M.; Nulty, R. Mc; Meroni, C.; Migliore, E.; Mitaroff, W.; Mjoernmark, U.; Moa, T.; Moch, M.; Moenig, K.; Monge, R.; Montenegro, J.; Moraes, D.; Moreno, S. Carrillo; Morettini, P.; Muêller, U.; Muenich, K.; Mulders, M.; Mundim, L.; Murray, W. J.; Muryn, B.; Myatt, G.; Myklebust, T.; Nassiakou, M.; Navarria, F. L.; Nawrocki, K.; Nicolaidou, R.; Nikolenko, M.; Obłąkowska-Mucha, A.; Obraztsov, V.; Olshevski, A. G.; Onofre, A.; Orava, R.; Österberg, K.; Ouraou, A.; Oyanguren, A.; Paganoni, M.; Paiano, S.; Palacios, J.; Pałka, H.; Papadopoulou, Th. D.; Pape, L.; Parkes, C.; Parodi, F.; Parzefall, U.; Passeri, A.; Passon, O.; Peralta, L.; Perepelitsa, V.; Perrotta, A.; Petrolini, A.; Piedra, J.; Pieri, L.; Pierre, F.; Pimenta, M.; Piotto, E.; Podobnik, T.; Poireau, V.; Pol, M. E.; Polok, G.; Pozdniakov, V.; Pukhaeva, N.; Pullia, A.; Radojičić, D.; Rameš, J.; Read, A. L.; Rebecchi, P.; Rehn, J.; Reid, D.; Reinhardt, R.; Renton, P.; Richard, F.; Řídký, J.; Rivero, M.; Rodríguez, D.; Romero, A.; Ronchese, P.; Roudeau, P.; Rovelli, T.; Ruhlmann-Kleider, V.; Ryabtchikov, D.; Sadovsky, A.; Salmi, L.; Salt, J.; Sander, C.; Savoy-Navarro, A.; Schwickerath, U.; Sekulin, R.; Siebel, M.; Simard, L.; Sisakian, A. N.; Smadja, G.; Smirnova, O.; Sokolov, A.; Sopczak, A.; Sosnowski, R.; Spassov, T.; Stanitzki, M. M.; Stocchi, A.; Strauss, J.; Stugu, B.; Szczekowski, M.; Szeptycka, M.; Szumlak, T.; Tabarelli, T.; Tegenfeldt, F.; Thomas, J. P.; Timmermans, J.; Tkatchev, L. G.; Tobin, M.; Todorovova, S.; Tomé, B.; Tonazzo, A.; Tortosa, P.; Trávničék, P.; Treille, D.; Tristram, G.; Trochimczuk, M.; Troncon, C.; Turluer, M. L.; Tyapkin, I. A.; Tyapkin, P.; Tzamarias, S.; Uvarov, V.; Valenti, G.; Dam, P. Van; Eldik, J. Van; Remortel, N. Van; Vulpen, I. van; Vegni, G.; Veloso, F.; Vénus, W.; Verdier, P.; Verzi, V.; Vilanova, D.; Vitale, L.; Vrba, V.; Wahlen, H.; Washbrook, A.; Weiser, C.; Wicke, D.; Wickens, J.; Wilkinson, G.; Winter, M.; Witek, M.; Yushchenko, O.; Zalewska, A.; Zalewski, P.; Zavrtanik, D.; Zhuravlov, V.; Zimin, N. I.; Zintchenko, A.; Župan, M.

doi:10.1140/epjc/s10052-008-0585-7

Cited by 54 publications

(27 citation statements)

References 59 publications

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“…The first factor above represents the likelihood for the kinematic fit with that combination of jets, while the second factor reflects the degree of compatibility with the observed b-tagging assignments: 6) where the index j runs over all jets considered in the fit, and the probabilities p j equal ε l , (1 − ε l ), ε b , or (1 − ε b ), depending on the flavor assigned to each jet, and whether the jet is b-tagged. The b-tag efficiency (ε b ) is 60.6 ± 2.5%, and is calculated from tt simulation using the scale factors between data and simulation and the corresponding uncertainties from ref.…”

Section: The Ideogram Methodsmentioning

confidence: 99%

“…The data are split into − and + samples that contain, respectively, three-jet decays of the associated top or antitop quarks. For each event category, the Ideogram likelihood method [6] is used to measure the mass of the top quark (m t ) or antitop quark (m t ), and the difference between the masses in the two categories of lepton charge is taken as the mass difference ∆m t ≡ m t − m t . The Ideogram method was used previously [7,8] to measure the mass of the top quark.…”

Section: Introduction and Overviewmentioning

confidence: 99%

See 1 more Smart Citation

Measurement of the mass difference between top and antitop quarks

Chatrchyan¹,

Khachatryan²,

Sirunyan³

et al. 2012

J. High Energ. Phys.

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A measurement of the mass difference between the top and the antitop quark (∆m t = m t − m t ) is performed using events with a muon or an electron and at least four jets in the final state. The analysis is based on data collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 4.96±0.11 fb −1 , and yields the value of ∆m t = −0.44 ± 0.46 (stat.) ± 0.27 (syst.) GeV. This result is consistent with equality of particle and antiparticle masses required by CPT invariance, and provides a significantly improved precision relative to existing measurements.

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Section: The Ideogram Methodsmentioning

confidence: 99%

Section: Introduction and Overviewmentioning

confidence: 99%

Measurement of the mass difference between top and antitop quarks

Chatrchyan¹,

Khachatryan²,

Sirunyan³

et al. 2012

J. High Energ. Phys.

Self Cite

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show abstract

“…Additional tests were performed in the fully hadronic final state using mixed Lorentz-boosted Z events [51], in which W W events are emulated using two events taken at the Z peak, and transforming them such that their superposition reflects that of a true fully hadronic W W event. These studies are also sensitive to systematic errors in the event reconstruction technique, and are discussed further in the relevant section below.…”

Section: Modelling Of Fragmentationmentioning

confidence: 99%

“…An additional problem, not included in the effects considered above, has been encountered in the reconstruction of charged tracks in the forward region of DELPHI [51], leading to a small error in the reconstructed direction of forward tracks in both simulated and real data. Its effects were shown to be negligible in a previous DELPHI analysis [6] involving fits to binned data of production and decay distributions in W W production, and, in a study of the current data in the jj ν final state at 200 GeV, have also been found to be negligible in comparison to the other correlated systematic errors considered.…”

Section: Event Reconstructionmentioning

confidence: 99%

Measurements of CP-conserving trilinear gauge boson couplings WWV (V≡γ,Z) in e+e− collisions at LEP2

Abdallah¹,

Abreu²,

Adam³

et al. 2010

Eur. Phys. J. C

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The data taken by DELPHI at centre-of-mass energies between 189 and 209 GeV are used to place limits on the CP-conserving trilinear gauge boson couplings g Z 1 , λ γ and κ γ associated to W + W − and single W production at LEP2. Using data from the jj ν, jjjj , jj X and X final states, where j , and X represent a jet, a lepton and missing four-momentum, respectively, the following limits are set on the couplings when one parameter is allowed to vary and the others are set to their Standard Model values of zero: Results are also presented when two or three parameters are allowed to vary. All observations are consistent with the predictions of the Standard Model and supersede the previous results on these gauge coupling parameters published by DELPHI.

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“…Improving the measurement of M W is an important contribution to our understanding of the electroweak (EW) interaction, and, potentially, of how the electroweak symmetry is broken. The current world-average measured value is M W ¼ 80:399 AE 0:025 GeV [1] from a combination of measurements from the ALEPH [2], DELPHI [3], L3 [4], OPAL [5], D0 [6], and CDF [7,8] Collaborations.…”

mentioning

confidence: 99%