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Measurement of the mass and width of the W boson in e+e - collisions at √s = 161-209 GeV

European Physical Journal C 55:1 (2008) 1-38

Authors:

J Abdallah, P Abreu, W Adam, P Adzic, T Albrecht, R Alemany-Fernandez, T Allmendinger, PP Allport, U Amaldi, N Amapane, S Amato, E Anashkin, A Andreazza, S Andringa, N Anjos, P Antilogus, WD Apel, Y Arnoud, S Ask, B Asman, JE Augustin, A Augustinus, P Baillon, A Ballestrero, P Bambade, R Barbier, D Bardin, GJ Barker, A Baroncelli, M Battaglia, M Baubillier, KH Becks, M Begalli, A Behrmann, E Ben-Haim, N Benekos, A Benvenuti, C Berat, M Berggren, D Bertrand, M Besancon, N Besson, D Bloch, M Blom, M Bluj, M Bonesini, M Boonekamp, PSL Booth, G Borisov, O Botner, B Bouquet, TJV Bowcock, I Boyko, M Bracko, R Brenner, E Brodet, P Bruckman, JM Brunet, B Buschbeck, P Buschmann, M Calvi, T Camporesi, V Canale, F Carena, N Castro, F Cavallo, M Chapkin, P Charpentier, P Checchia, R Chierici, P Chliapnikov, J Chudoba, SU Chung, K Cieslik, P Collins, R Contri, G Cosme, F Cossutti, MJ Costa, D Crennell, J Cuevas, J D'Hondt, T Da Silva, W Da Silva, G Della Ricca, A De Angelis, W De Boer, C De Clercq, B De Lotto, N De Maria, A De Min, L De Paula, L Di Ciaccio, A Di Simone, K Doroba, J Drees, A Duperrin, G Eigen, T Ekelof, M Ellert

Abstract:

A measurement of the W boson mass and width has been performed by the DELPHI collaboration using the data collected during the full LEP2 programme (1996-2000). The data sample has an integrated luminosity of 660 pb-1 and was collected over a range of centre-of-mass energies from 161 to 209 GeV. Results are obtained by applying the method of direct reconstruction of the mass of the W from its decay products in both the W+W -→ℓν̄ℓqq̄′ and W +W-→qq̄′ q̄q′ channels. The W mass result for the combined data set is MW = 80.336 ± 0.055 (Stat.) ± 0.028 (Syst.) ± 0.025 (FSI) ± 0.009 (LEP) GeV}/c2, where FSI represents the uncertainty due to final state interaction effects in the qq̄′ q̄q′ channel, and LEP represents that arising from the knowledge of the collision energy of the accelerator. The combined value for the W width is ΓW = 2.404 ± 0.140 (Stat.) ± 0.077 (Syst.) ± 0.065 (FSI) GeV/c 2. These results supersede all values previously published by the DELPHI collaboration. © 2008 Springer-Verlag / Società Italiana di Fisica.
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B, D and K decays

EUROPEAN PHYSICAL JOURNAL C 57:1-2 (2008) 309-492

Authors:

G Buchalla, TK Komatsubara, F Muheim, L Silvestrini, M Artuso, DM Asner, P Ball, E Baracchini, G Bell, M Beneke, J Berryhill, A Bevan, II Bigi, M Blanke, Ch Bobeth, M Bona, F Borzumati, T Browder, T Buanes, O Buchmueller, AJ Buras, S Burdin, DG Cassel, R Cavanaugh, M Ciuchini, P Colangelo, G Crosetti, A Dedes, F De Fazio, S Descotes-Genon, J Dickens, Z Dolezal, S Duerr, U Egede, C Eggel, G Eigen, S Fajfer, Th Feldmann, R Ferrandes, P Gambino, T Gershon, V Gibson, M Giorgi, VV Gligorov, B Golob, A Golutvin, Y Grossman, D Guadagnoli, U Haisch, M Hazumi, S Heinemeyer, G Hiller, D Hitlin, T Huber, T Hurth, T Iijima, A Ishikawa, G Isidori, S Jaeger, A Khodjamirian, P Koppenburg, T Lagouri, U Langenegger, C Lazzeroni, A Lenz, V Lubicz, W Lucha, H Mahlke, D Melikhov, F Mescia, M Misiak, M Nakao, J Napolitano, N Nikitin, U Nierste, K Oide, Y Okada, P Paradisi, F Parodi, M Patel, AA Petrov, TN Pham, M Pierini, S Playfer, G Polesello, A Policicchio, A Poschenrieder, P Raimondi, S Recksiegel, P Reznicek, A Robert, JL Rosner, G Ruggiero, A Sarti, O Schneider, F Schwab, S Simula, S Sivoklokov, P Slavich, C Smith, M Smizanska, A Soni, T Speer, P Spradlin, M Spranger, A Starodumov, B Stech, A Stocchi, S Stone, C Tarantino, F Teubert, S T'Jampens, K Toms, K Trabelsi, S Trine, S Uhlig, V Vagnoni, JJ van Hunen, G Weiglein, A Weiler, G Wilkinson, Y Xie, M Yamauchi, G Zhu, J Zupan, R Zwicky
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Absolute branching fractions of Cabibbo-suppressed D → K(K)over-bar decays

PHYSICAL REVIEW D 77:9 (2008) ARTN 091106

Authors:

G Bonvicini, D Cinabro, M Dubrovin, A Lincoln, J Rademacker, DM Asner, KW Edwards, P Naik, J Reed, RA Briere, T Ferguson, G Tatishvili, H Vogel, ME Watkins, JL Rosner, JP Alexander, DG Cassel, JE Duboscq, R Ehrlich, L Fields, L Gibbons, R Gray, SW Gray, DL Hartill, BK Heltsley, D Hertz, CD Jones, J Kandaswamy, DL Kreinick, VE Kuznetsov, H Mahlke-Kruger, D Mohapatra, H Miyake, PUE Onyisi, JR Patterson, D Peterson, D Riley, A Ryd, AJ Sadoff, X Shi, S Stroiney, WM Sun, T Wilksen, SB Athar, R Patel, J Yelton, P Rubin, BI Eisenstein, I Karliner, S Mehrabyan, N Lowrey, M Selen, EJ White, J Wiss, RE Mitchell, MR Shepherd, D Besson, TK Pedlar, D Cronin-Hennessy, KY Gao, J Hietala, Y Kubota, T Klein, BW Lang, R Poling, AW Scott, P Zweber, S Dobbs, Z Metreveli, KK Seth, A Tomaradze, J Libby, A Powell, G Wilkinson, KM Ecklund, W Love, V Savinov, A Lopez, H Mendez, J Ramirez, JY Ge, DH Miller, IPJ Shipsey, B Xin, GS Adams, M Anderson, JP Cummings, I Danko, D Hu, B Moziak, J Napolitano, Q He, J Insler, H Muramatsu, CS Park, EH Thorndike, F Yang, M Artuso, S Blusk, S Khalil, J Li, R Mountain, S Nisar, K Randrianarivony, N Sultana, T Skwarnicki, S Stone, JC Wang, LM Zhang
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Absolute measurement of hadronic branching fractions of the Ds+ meson

PHYSICAL REVIEW LETTERS 100:16 (2008) ARTN 161804

Authors:

JP Alexander, K Berkelman, DG Cassel, JE Duboscq, R Ehrlich, L Fields, L Gibbons, R Gray, SW Gray, DL Hartill, BK Heltsley, D Hertz, CD Jones, J Kandaswamy, DL Kreinick, VE Kuznetsov, H Mahlke-Kruger, D Mohapatra, PUE Onyisi, JR Patterson, D Peterson, D Riley, A Ryd, AJ Sadoff, X Shi, S Stroiney, WM Sun, T Wilksen, SB Athar, R Patel, J Yelton, P Rubin, BI Eisenstein, I Karliner, S Mehrabyan, N Lowrey, M Selen, EJ White, J Wiss, RE Mitchell, MR Shepherd, D Besson, TK Pedlar, D Cronin-Hennessy, KY Gao, J Hietala, Y Kubota, T Klein, BW Lang, R Poling, AW Scott, P Zweber, S Dobbs, Z Metreveli, KK Seth, A Tomaradze, J Libby, A Powell, G Wilkinson, KM Ecklund, W Love, V Savinov, A Lopez, H Mendez, J Ramirez, JY Ge, DH Miller, B Sanghi, IPJ Shipsey, B Xin, GS Adams, M Anderson, JP Cummings, I Danko, D Hu, B Moziak, J Napolitano, Q He, J Insler, H Muramatsu, CS Park, EH Thorndike, F Yang, M Artuso, S Blusk, S Khalil, J Li, R Mountain, S Nisar, K Randrianarivony, N Sultana, T Skwarnicki, S Stone, JC Wang, LM Zhang, G Bonvicini, D Cinabro, M Dubrovin, A Lincoln, J Rademacker, DM Asner, KW Edwards, P Naik, RA Briere, T Ferguson, G Tatishvili, H Vogel, ME Watkins, JL Rosner
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B, D and K decays

European Physical Journal C (2008) 1-184

Authors:

M Artuso, S Stone, DM Asner, P Ball, A Dedes, G Weiglein, R Zwicky, L Silvestrini, E Baracchini, G Bell, U Nierste, S Trine, M Beneke, T Huber, J Berryhill, A Bevan, II Bigi, M Blanke, Ch Bobeth, G Hiller, M Bona, S T'Jampens, F Borzumati, T Browder, T Buanes, G Eigen, G Buchalla, O Buchmüller, A Golutvin, T Hurth, S Jäger, M Patel, M Pierini, G Ruggiero, P Slavich, F Teubert, AJ Buras, D Guadagnoli, P Paradisi, A Poschenrieder, S Recksiegel, M Spranger, S Uhlig, S Burdin, DG Cassel, H Mahlke, A Weiler, R Cavanaugh, M Ciuchini, V Lubicz, S Simula, C Tarantino, P Colangelo, F De Fazio, R Ferrandes, G Crosetti, A Policicchio, S Descotes-Genon, J Dickens, V Gibson, C Lazzeroni, Z Doležal, T Lagouri, P Řezníček, S Dürr, U Egede, P Koppenburg, C Eggel, U Langenegger, A Starodumov, S Fajfer, J Zupan, Th Feldmann, A Khodjamirian, P Gambino, T Gershon, M Giorgi, VV Gligorov, P Spradlin, G Wilkinson, B Golob, Y Grossman, U Haisch, T Speer, TK Komatsubara, M Hazumi, M Nakao, K Oide, Y Okada, K Trabelsi, M Yamauchi, S Heinemeyer, D Hitlin, T Iijima, A Ishikawa, G Isidori, F Mescia, P Raimondi, A Sarti, A Lenz, W Lucha, D Melikhov, M Misiak, F Muheim, S Playfer, Y Xie, J Napolitano, N Nikitin, S Sivoklokov, K Toms, F Parodi, AA Petrov, TN Pham, G Polesello, A Robert, JL Rosner, O Schneider, JJ van Hunen, F Schwab, C Smith, M Smizanska, A Soni, B Stech, A Stocchi, V Vagnoni, G Zhu

Abstract:

The present report documents the results of Working Group 2: B, D and K decays, of the workshop on Flavor in the Era of the LHC, held at CERN from November 2005 through March 2007. With the advent of the LHC, we will be able to probe New Physics (NP) up to energy scales almost one order of magnitude larger than it has been possible with present accelerator facilities. While direct detection of new particles will be the main avenue to establish the presence of NP at the LHC, indirect searches will provide precious complementary information, since most probably it will not be possible to measure the full spectrum of new particles and their couplings through direct production. In particular, precision measurements and computations in the realm of flavor physics are expected to play a key role in constraining the unknown parameters of the Lagrangian of any NP model emerging from direct searches at the LHC. The aim of Working Group 2 was twofold: on the one hand, to provide a coherent up-to-date picture of the status of flavor physics before the start of the LHC; on the other hand, to initiate activities on the path towards integrating information on NP from high-p and flavor data. This report is organized as follows: in Sect. 1, we give an overview of NP models, focusing on a few examples that have been discussed in some detail during the workshop, with a short description of the available computational tools for flavor observables in NP models. Section 2 contains a concise discussion of the main theoretical problem in flavor physics: the evaluation of the relevant hadronic matrix elements for weak decays. Section 3 contains a detailed discussion of NP effects in a set of flavor observables that we identified as "benchmark channels" for NP searches. The experimental prospects for flavor physics at future facilities are discussed in Sect. 4. Finally, Sect. 5 contains some assessments on the work done at the workshop and the prospects for future developments. © 2008 Springer-Verlag / Società Italiana di Fisica.
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