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Measurement of lifetime and decay-width difference in Bs0→J/ψ decays

Physical Review Letters 100:12 (2008)

Authors:

T Aaltonen, A Abulencia, J Adelman, T Akimoto, MG Albrow, B Álvarez González, S Amerio, D Amidei, A Anastassov, A Annovi, J Antos, G Apollinari, A Apresyan, T Arisawa, A Artikov, W Ashmanskas, A Attal, A Aurisano, F Azfar, P Azzi-Bacchetta, P Azzurri, N Bacchetta, W Badgett, A Barbaro-Galtieri, VE Barnes, BA Barnett, S Baroiant, V Bartsch, G Bauer, PH Beauchemin, F Bedeschi, P Bednar, S Behari, G Bellettini, J Bellinger, A Belloni, D Benjamin, A Beretvas, J Beringer, T Berry, A Bhatti, M Binkley, D Bisello, I Bizjak, RE Blair, C Blocker, B Blumenfeld, A Bocci, A Bodek, V Boisvert, G Bolla, A Bolshov, D Bortoletto, J Boudreau, A Boveia, B Brau, L Brigliadori, C Bromberg, E Brubaker, J Budagov, HS Budd, S Budd, K Burkett, G Busetto, P Bussey, A Buzatu, KL Byrum, S Cabrera, M Campanelli, M Campbell, F Canelli, A Canepa, D Carlsmith, R Carosi, S Carrillo, S Carron, B Casal, M Casarsa, A Castro, P Catastini, D Cauz, M Cavalli-Sforza, A Cerri, L Cerrito, SH Chang, YC Chen, M Chertok, G Chiarelli, G Chlachidze, F Chlebana, K Cho, D Chokheli, JP Chou, G Choudalakis, SH Chuang, K Chung, WH Chung, YS Chung, CI Ciobanu, MA Ciocci

Abstract:

We measure the mean lifetime τ=2/(ΓL+ΓH) and the decay-width difference ΔΓ=ΓL-ΓH of the light and heavy mass eigenstates of the Bs0 meson, BsL0 and BsH0, in Bs0→J/ψ decays using 1.7fb-1 of data collected with the CDF II detector at the Fermilab Tevatron pp̄ collider. Assuming CP conservation, a good approximation for the Bs0 system in the standard model, we obtain ΔΓ=0.076-0.063+0. 059(stat)±0.006(syst)ps-1 and τ=1.52±0.04(stat)±0. 02(syst)ps, the most precise measurements to date. Our constraints on the weak phase and ΔΓ are consistent with CP conservation. © 2008 The American Physical Society.
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First Observation of Coherent $\pi^0$ Production in Neutrino Nucleus Interactions with $E_{\nu}<$ 2 GeV

(2008)

Authors:

The MiniBooNE Collaboration, AA Aguilar-Arevalo, CE Anderson, AO Bazarko, SJ Brice, BC Brown, L Bugel, J Cao, L Coney, JM Conrad, DC Cox, A Curioni, Z Djurcic, DA Finley, BT Fleming, R Ford, FG Garcia, GT Garvey, C Green, JA Green, TL Hart, E Hawker, R Imlay, RA Johnson, G Karagiori, P Kasper, T Katori, T Kobilarcik, I Kourbanis, S Koutsoliotas, EM Laird, SK Linden, JM Link, Y Liu, Y Liu, WC Louis, KBM Mahn, W Marsh, PS Martin, G McGregor, W Metcalf, PD Meyers, F Mills, GB Mills, J Monroe, CD Moore, RH Nelson, VT Nguyen, P Nienaber, JA Nowak, S Ouedraogo, RB Patterson, D Perevalov, CC Polly, E Prebys, JL Raaf, H Ray, BP Roe, AD Russell, V Sandberg, R Schirato, D Schmitz, MH Shaevitz, FC Shoemaker, D Smith, M Soderberg, M Sorel, P Spentzouris, I Stancu, RJ Stefanski, M Sung, HA Tanaka, R Tayloe, M Tzanov, R Van de Water, MO Wascko, DH White, MJ Wilking, HJ Yang, GP Zeller, ED Zimmerman
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Observation of exclusive dijet production at the Fermilab Tevatron p̄p collider

Physical Review D - Particles, Fields, Gravitation and Cosmology 77:5 (2008)

Authors:

T Aaltonen, J Adelman, T Akimoto, MG Albrow, BA González, S Amerio, D Amidei, A Anastassov, A Annovi, J Antos, M Aoki, G Apollinari, A Apresyan, T Arisawa, A Artikov, W Ashmanskas, A Attal, A Aurisano, F Azfar, P Azzi-Bacchetta, P Azzurri, N Bacchetta, W Badgett, A Barbaro-Galtieri, VE Barnes, BA Barnett, S Baroiant, V Bartsch, G Bauer, PH Beauchemin, F Bedeschi, P Bednar, S Behari, G Bellettini, J Bellinger, A Belloni, D Benjamin, A Beretvas, J Beringer, T Berry, A Bhatti, M Binkley, D Bisello, I Bizjak, RE Blair, C Blocker, B Blumenfeld, A Bocci, A Bodek, V Boisvert, G Bolla, A Bolshov, D Bortoletto, J Boudreau, A Boveia, B Brau, A Bridgeman, L Brigliadori, C Bromberg, E Brubaker, J Budagov, HS Budd, S Budd, K Burkett, G Busetto, P Bussey, A Buzatu, KL Byrum, S Cabrera, M Campanelli, M Campbell, F Canelli, A Canepa, D Carlsmith, R Carosi, S Carrillo, S Carron, B Casal, M Casarsa, A Castro, P Catastini, D Cauz, M Cavalli-Sforza, A Cerri, L Cerrito, SH Chang, YC Chen, M Chertok, G Chiarelli, G Chlachidze, F Chlebana, K Cho, D Chokheli, JP Chou, G Choudalakis, SH Chuang, K Chung, WH Chung, YS Chung, CI Ciobanu

Abstract:

We present the first observation and cross section measurement of exclusive dijet production in p̄p interactions, p̄p→p̄+dijet+p. Using a data sample of 310pb-1 collected by the Run II Collider Detector at Fermilab at s=1.96TeV, exclusive cross sections for events with two jets of transverse energy ETjet≥10GeV have been measured as a function of minimum ETjet. The exclusive signal is extracted from fits to data distributions based on Monte Carlo simulations of expected dijet signal and background shapes. The simulated background distribution shapes are checked in a study of a largely independent data sample of 200pb-1 of b-tagged jet events, where exclusive dijet production is expected to be suppressed by the Jz=0 total angular momentum selection rule. Results obtained are compared with theoretical expectations, and implications for exclusive Higgs boson production at the pp Large Hadron Collider at s=14TeV are discussed. © 2008 The American Physical Society.
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Publisher’s Note: First cross-correlation analysis of interferometric and resonant-bar gravitational-wave data for stochastic backgrounds [Phys. Rev. D 76, 022001 (2007)]

Physical Review D American Physical Society (APS) 77:6 (2008) 069904

Authors:

B Abbott, R Abbott, R Adhikari, J Agresti, P Ajith, B Allen, R Amin, SB Anderson, WG Anderson, M Arain, M Araya, H Armandula, M Ashley, S Aston, P Aufmuth, C Aulbert, S Babak, S Ballmer, H Bantilan, BC Barish, C Barker, D Barker, B Barr, P Barriga, MA Barton, K Bayer, K Belczynski, J Betzwieser, PT Beyersdorf, B Bhawal, IA Bilenko, G Billingsley, R Biswas, E Black, K Blackburn, L Blackburn, D Blair, B Bland, J Bogenstahl, L Bogue, R Bork, V Boschi, S Bose, PR Brady, VB Braginsky, JE Brau, M Brinkmann, A Brooks, DA Brown, A Bullington, A Bunkowski, A Buonanno, M Burgamy, O Burmeister, D Busby, RL Byer, L Cadonati, G Cagnoli, JB Camp, J Cannizzo, K Cannon, CA Cantley, J Cao, L Cardenas, MM Casey, G Castaldi, C Cepeda, E Chalkey, P Charlton, S Chatterji, S Chelkowski, Y Chen, F Chiadini, D Chin, E Chin, J Chow, N Christensen, J Clark, P Cochrane, T Cokelaer, CN Colacino, R Coldwell, R Conte, D Cook, T Corbitt, D Coward, D Coyne, JDE Creighton, TD Creighton, RP Croce, DRM Crooks, AM Cruise, A Cumming, J Dalrymple, E D’Ambrosio, K Danzmann, G Davies, D DeBra, J Degallaix, M Degree, T Demma, V Dergachev, S Desai, R DeSalvo, S Dhurandhar, M Diaz, J Dickson, A Di Credico, G Diederichs, A Dietz, EE Doomes, RWP Drever, J-C Dumas, RJ Dupuis, JG Dwyer, P Ehrens, E Espinoza, T Etzel, M Evans, T Evans, S Fairhurst, Y Fan, D Fazi, MM Fejer, LS Finn, V Fiumara, N Fotopoulos, A Franzen, KY Franzen, A Freise, R Frey, T Fricke, P Fritschel, VV Frolov, M Fyffe, V Galdi, J Garofoli, I Gholami, JA Giaime, S Giampanis, KD Giardina, K Goda, E Goetz, L Goggin, G Gonzalez, S Gossler, A Grant, S Gras, C Gray, M Gray, J Greenhalgh, AM Gretarsson, R Grosso, H Grote, S Grunewald, M Guenther, R Gustafson, B Hage, WO Hamilton, D Hammer, C Hanna, J Hanson, J Harms, G Harry, E Harstad, T Hayler, J Heefner, IS Heng, A Heptonstall, M Heurs, M Hewitson, S Hild, E Hirose, D Hoak, D Hosken, J Hough, E Howell, D Hoyland, SH Huttner, D Ingram, E Innerhofer, M Ito, Y Itoh, A Ivanov, D Jackrel, B Johnson, WW Johnson, DI Jones, G Jones, R Jones, L Ju, P Kalmus, V Kalogera, D Kasprzyk, E Katsavounidis, K Kawabe, S Kawamura, F Kawazoe, W Kells, DG Keppel, F Ya Khalili, C Kim, P King, JS Kissel, S Klimenko, K Kokeyama, V Kondrashov, RK Kopparapu, D Kozak, B Krishnan, P Kwee, PK Lam, M Landry, B Lantz, A Lazzarini, B Lee, M Lei, J Leiner, V Leonhardt, I Leonor, K Libbrecht, P Lindquist, NA Lockerbie, M Longo, M Lormand, M Lubinski, H Luck, B Machenschalk, M MacInnis, M Mageswaran, K Mailand, M Malec, V Mandic, S Marano, S Marka, J Markowitz, E Maros, I Martin, JN Marx, K Mason, L Matone, V Matta, N Mavalvala, R McCarthy, BJ McCaulley, DE McClelland, SC McGuire, M McHugh, K McKenzie, JWC McNabb, S McWilliams, T Meier, A Melissinos, G Mendell, RA Mercer, S Meshkov, E Messaritaki, CJ Messenger, D Meyers, E Mikhailov, P Miller, S Mitra, VP Mitrofanov, G Mitselmakher, R Mittleman, O Miyakawa, S Mohanty, V Moody, G Moreno, K Mossavi, C MowLowry, A Moylan, D Mudge, G Mueller, S Mukherjee, H Muller-Ebhardt, J Munch, P Murray, E Myers, J Myers, T Nash, G Newton, A Nishizawa, K Numata, B O’Reilly, R O’Shaughnessy, DJ Ottaway, H Overmier, BJ Owen, H-J Paik, Y Pan, MA Papa, V Parameshwaraiah, P Patel, M Pedraza, S Penn, V Pierro, IM Pinto, M Pitkin, H Pletsch, MV Plissi, F Postiglione, R Prix, V Quetschke, F Raab, D Rabeling, H Radkins, R Rahkola, N Rainer, M Rakhmanov, M Ramsuder, K Rawlins, S Ray-Majumder, V Re, H Rehbein, S Reid, DH Reitze, L Ribichini, R Riesen, K Riles, B Rivera, NA Robertson, C Robinson, EL Robinson, S Roddy, A Rodriguez, AM Rogan, J Rollins, JD Romano, J Romie, R Route, S Rowan, A Rudiger, L Ruet, P Russell, K Ryan, S Sakata, M Samidi, L Sancho de la Jordana, V Sandberg, V Sannibale, S Saraf, P Sarin, BS Sathyaprakash, S Sato, PR Saulson, R Savage, P Savov, S Schediwy, R Schilling, R Schnabel, R Schofield, BF Schutz, P Schwinberg, SM Scott, AC Searle, B Sears, F Seifert, D Sellers, AS Sengupta, P Shawhan, DH Shoemaker, A Sibley, JA Sidles, X Siemens, D Sigg, S Sinha, AM Sintes, BJJ Slagmolen, J Slutsky, JR Smith, MR Smith, K Somiya, KA Strain, DM Strom, A Stuver, TZ Summerscales, K-X Sun, M Sung, PJ Sutton, H Takahashi, DB Tanner, M Tarallo, R Taylor, R Taylor, J Thacker, KA Thorne, KS Thorne, A Thuring, KV Tokmakov, C Torres, C Torrie, G Traylor, M Trias, W Tyler, D Ugolini, C Ungarelli, K Urbanek, H Vahlbruch, M Vallisneri, C Van Den Broeck, M Varvella, S Vass, A Vecchio, J Veitch, P Veitch, A Villar, C Vorvick, SP Vyachanin, SJ Waldman, L Wallace, H Ward, R Ward, K Watts, J Weaver, D Webber, A Weber, A Weidner, M Weinert, A Weinstein, R Weiss, S Wen, K Wette, JT Whelan, DM Whitbeck, SE Whitcomb, BF Whiting, C Wilkinson, PA Willems, L Williams, B Willke, I Wilmut, W Winkler, CC Wipf, S Wise, AG Wiseman, G Woan, D Woods, R Wooley, J Worden, W Wu, I Yakushin, H Yamamoto, Z Yan, S Yoshida, N Yunes, M Zanolin, J Zhang, L Zhang, P Zhang, C Zhao, N Zotov, M Zucker, H zur Muhlen, J Zweizig
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Measurement of the shape of the boson-transverse momentum distribution in pp --> Z/gamma* --> e+e- + X events produced at square root s = 1.96 TeV.

Phys Rev Lett 100:10 (2008) 102002

Authors:

VM Abazov, B Abbott, M Abolins, BS Acharya, M Adams, T Adams, E Aguilo, SH Ahn, M Ahsan, GD Alexeev, G Alkhazov, A Alton, G Alverson, GA Alves, M Anastasoaie, LS Ancu, T Andeen, S Anderson, B Andrieu, MS Anzelc, Y Arnoud, M Arov, M Arthaud, A Askew, B Asman, ACS Assis Jesus, O Atramentov, C Autermann, C Avila, C Ay, F Badaud, A Baden, L Bagby, B Baldin, DV Bandurin, S Banerjee, P Banerjee, E Barberis, A-F Barfuss, P Bargassa, P Baringer, J Barreto, JF Bartlett, U Bassler, D Bauer, S Beale, A Bean, M Begalli, M Begel, C Belanger-Champagne, L Bellantoni, A Bellavance, JA Benitez, SB Beri, G Bernardi, R Bernhard, I Bertram, M Besançon, R Beuselinck, VA Bezzubov, PC Bhat, V Bhatnagar, C Biscarat, G Blazey, F Blekman, S Blessing, D Bloch, K Bloom, A Boehnlein, D Boline, TA Bolton, G Borissov, T Bose, A Brandt, R Brock, G Brooijmans, A Bross, D Brown, NJ Buchanan, D Buchholz, M Buehler, V Buescher, V Bunichev, S Burdin, S Burke, TH Burnett, CP Buszello, JM Butler, P Calfayan, S Calvet, J Cammin, W Carvalho, BCK Casey, NM Cason, H Castilla-Valdez, S Chakrabarti, D Chakraborty, KM Chan, K Chan, A Chandra, F Charles, E Cheu, F Chevallier, DK Cho, S Choi, B Choudhary, L Christofek, T Christoudias, S Cihangir, D Claes, Y Coadou, M Cooke, WE Cooper, M Corcoran, F Couderc, M-C Cousinou, S Crépé-Renaudin, D Cutts, M Cwiok, H da Motta, A Das, G Davies, K De, SJ de Jong, E De La Cruz-Burelo, C De Oliveira Martins, JD Degenhardt, F Déliot, M Demarteau, R Demina, D Denisov, SP Denisov, S Desai, HT Diehl, M Diesburg, A Dominguez, H Dong, LV Dudko, L Duflot, SR Dugad, D Duggan, A Duperrin, J Dyer, A Dyshkant, M Eads, D Edmunds, J Ellison, VD Elvira, Y Enari, S Eno, P Ermolov, H Evans, A Evdokimov, VN Evdokimov, AV Ferapontov, T Ferbel, F Fiedler, F Filthaut, W Fisher, HE Fisk, M Ford, M Fortner, H Fox, S Fu, S Fuess, T Gadfort, CF Galea, E Gallas, E Galyaev, C Garcia, A Garcia-Bellido, V Gavrilov, P Gay, W Geist, D Gelé, CE Gerber, Y Gershtein, D Gillberg, G Ginther, N Gollub, B Gómez, A Goussiou, PD Grannis, H Greenlee, ZD Greenwood, EM Gregores, G Grenier, Ph Gris, J-F Grivaz, A Grohsjean, S Grünendahl, MW Grünewald, J Guo, F Guo, P Gutierrez, G Gutierrez, A Haas, NJ Hadley, P Haefner, S Hagopian, J Haley, I Hall, RE Hall, L Han, K Hanagaki, P Hansson, K Harder, A Harel, R Harrington, JM Hauptman, R Hauser, J Hays, T Hebbeker, D Hedin, JG Hegeman, JM Heinmiller, AP Heinson, U Heintz, C Hensel, K Herner, G Hesketh, MD Hildreth, R Hirosky, JD Hobbs, B Hoeneisen, H Hoeth, M Hohlfeld, SJ Hong, S Hossain, P Houben, Y Hu, Z Hubacek, V Hynek, I Iashvili, R Illingworth, AS Ito, S Jabeen, M Jaffré, S Jain, K Jakobs, C Jarvis, R Jesik, K Johns, C Johnson, M Johnson, A Jonckheere, P Jonsson, A Juste, D Käfer, E Kajfasz, AM Kalinin, JR Kalk, JM Kalk, S Kappler, D Karmanov, P Kasper, I Katsanos, D Kau, R Kaur, V Kaushik, R Kehoe, S Kermiche, N Khalatyan, A Khanov, A Kharchilava, YM Kharzheev, D Khatidze, H Kim, TJ Kim, MH Kirby, M Kirsch, B Klima, JM Kohli, J-P Konrath, M Kopal, VM Korablev, AV Kozelov, D Krop, T Kuhl, A Kumar, S Kunori, A Kupco, T Kurca, J Kvita, F Lacroix, D Lam, S Lammers, G Landsberg, P Lebrun, WM Lee, A Leflat, F Lehner, J Lellouch, J Leveque, P Lewis, J Li, QZ Li, L Li, SM Lietti, JGR Lima, D Lincoln, J Linnemann, VV Lipaev, R Lipton, Y Liu, Z Liu, L Lobo, A Lobodenko, M Lokajicek, P Love, HJ Lubatti, AL Lyon, AKA Maciel, D Mackin, RJ Madaras, P Mättig, C Magass, A Magerkurth, PK Mal, HB Malbouisson, S Malik, VL Malyshev, HS Mao, Y Maravin, B Martin, R McCarthy, A Melnitchouk, A Mendes, L Mendoza, PG Mercadante, M Merkin, KW Merritt, J Meyer, A Meyer, T Millet, J Mitrevski, J Molina, RK Mommsen, NK Mondal, RW Moore, T Moulik, GS Muanza, M Mulders, M Mulhearn, O Mundal, L Mundim, E Nagy, M Naimuddin, M Narain, NA Naumann, HA Neal, JP Negret, P Neustroev, H Nilsen, H Nogima, A Nomerotski, SF Novaes, T Nunnemann, V O'Dell, DC O'Neil, G Obrant, C Ochando, D Onoprienko, N Oshima, J Osta, R Otec, GJ Otero Y Garzón, M Owen, P Padley, M Pangilinan, N Parashar, S-J Park, SK Park, J Parsons, R Partridge, N Parua, A Patwa, G Pawloski, B Penning, M Perfilov, K Peters, Y Peters, P Pétroff, M Petteni, R Piegaia, J Piper, M-A Pleier, PLM Podesta-Lerma, VM Podstavkov, Y Pogorelov, M-E Pol, P Polozov, BG Pope, AV Popov, C Potter, WL Prado da Silva, HB Prosper, S Protopopescu, J Qian, A Quadt, B Quinn, A Rakitine, MS Rangel, K Ranjan, PN Ratoff, P Renkel, S Reucroft, P Rich, M Rijssenbeek, I Ripp-Baudot, F Rizatdinova, S Robinson, RF Rodrigues, M Rominsky, C Royon, P Rubinov, R Ruchti, G Safronov, G Sajot, A Sánchez-Hernández, MP Sanders, A Santoro, G Savage, L Sawyer, T Scanlon, D Schaile, RD Schamberger, Y Scheglov, H Schellman, P Schieferdecker, T Schliephake, C Schwanenberger, A Schwartzman, R Schwienhorst, J Sekaric, H Severini, E Shabalina, M Shamim, V Shary, AA Shchukin, RK Shivpuri, V Siccardi, V Simak, V Sirotenko, P Skubic, P Slattery, D Smirnov, J Snow, GR Snow, S Snyder, S Söldner-Rembold, L Sonnenschein, A Sopczak, M Sosebee, K Soustruznik, M Souza, B Spurlock, J Stark, J Steele, V Stolin, DA Stoyanova, J Strandberg, S Strandberg, MA Strang, M Strauss, E Strauss, R Ströhmer, D Strom, L Stutte, S Sumowidagdo, P Svoisky, A Sznajder, M Talby, P Tamburello, A Tanasijczuk, W Taylor, J Temple, B Tiller, F Tissandier, M Titov, VV Tokmenin, T Toole, I Torchiani, T Trefzger, D Tsybychev, B Tuchming, C Tully, PM Tuts, R Unalan, S Uvarov, L Uvarov, S Uzunyan, B Vachon, PJ van den Berg, R Van Kooten, WM van Leeuwen, N Varelas, EW Varnes, IA Vasilyev, M Vaupel, P Verdier, LS Vertogradov, M Verzocchi, F Villeneuve-Seguier, P Vint, P Vokac, E Von Toerne, M Voutilainen, R Wagner, HD Wahl, L Wang, MHLS Wang, J Warchol, G Watts, M Wayne, M Weber, G Weber, A Wenger, N Wermes, M Wetstein, A White, D Wicke, GW Wilson, SJ Wimpenny, M Wobisch, DR Wood, TR Wyatt, Y Xie, S Yacoob, R Yamada, M Yan, T Yasuda, YA Yatsunenko, K Yip, HD Yoo, SW Youn, J Yu, A Zatserklyaniy, C Zeitnitz, T Zhao, B Zhou, J Zhu, M Zielinski, D Zieminska, A Zieminski, L Zivkovic, V Zutshi, EG Zverev, D0 Collaboration

Abstract:

We present a measurement of the shape of the Z/gamma* boson transverse momentum (q(T)) distribution in pp --> Z/gamma* --> e(+)e(-) + X events at a center-of-mass energy of 1.96 TeV using 0.98 fb(-1) of data collected with the D0 detector at the Fermilab Tevatron collider. The data are found to be consistent with the resummation prediction at low q(T), but above the perturbative QCD calculation in the region of q(T)>30 GeV/c. Using events with q(T)<30 GeV/c, we extract the value of g(2), one of the nonperturbative parameters for the resummation calculation. Data at large boson rapidity y are compared with the prediction of resummation and with alternative models that employ a resummed form factor with modifications in the small Bjorken x region of the proton wave function.
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