Skip to main content
Home
Department Of Physics text logo
  • Research
    • Our research
    • Our research groups
    • Our research in action
    • Research funding support
    • Summer internships for undergraduates
  • Study
    • Undergraduates
    • Postgraduates
  • Engage
    • For alumni
    • For business
    • For schools
    • For the public
Menu
LSST/Rubin Dome Bridge Installation
Credit: Rubin Obs/NSF/AURA

Dr Farrukh Azfar

Lecturer

Research theme

  • Particle astrophysics & cosmology
  • Fundamental particles and interactions

Sub department

  • Particle Physics

Research groups

  • Accelerator Neutrinos
  • Rubin-LSST
Farrukh.Azfar@physics.ox.ac.uk
Telephone: 01865 (2)73327
Denys Wilkinson Building, room 669
  • About
  • Publications

Erratum: Measurement of the W boson polarization in top decay at CDF at √s p = 1:8 TeV (Physical Review D (2005) 71 (031101))

Physical Review D - Particles, Fields, Gravitation and Cosmology 71:5 (2005) 1-2

Authors:

D Acosta, T Affolder, MG Albrow, D Ambrose, D Amidei, K Anikeev, J Antos, G Apollinari, T Arisawa, A Artikov, W Ashmanskas, F Azfar, P Azzi-Bacchetta, N Bacchetta, H Bachacou, W Badgett, A Barbaro-Galtieri, VE Barnes, BA Barnett, S Baroiant, M Barone, G Bauer, F Bedeschi, S Behari, S Belforte, WH Bell, G Bellettini, J Bellinger, D Benjamin, A Beretvas, A Bhatti, M Binkley, D Bisello, M Bishai, RE Blair, C Blocker, K Bloom, B Blumenfeld, A Bocci, A Bodek, G Bolla, A Bolshov, D Bortoletto, J Boudreau, C Bromberg, E Brubaker, J Budagov, HS Budd, K Burkett, G Busetto, KL Byrum, S Cabrera, M Campbell, W Carithers, D Carlsmith, A Castro, D Cauz, A Cerri, L Cerrito, J Chapman, C Chen, YC Chen, M Chertok, G Chiarelli, G Chlachidze, F Chlebana, ML Chu, JY Chung, WH Chung, YS Chung, CI Ciobanu, AG Clark, M Coca, A Connolly, M Convery, J Conway, M Cordelli, J Cranshaw, R Culbertson, D Dagenhart, S D'Auria, P De Barbaro, S De Cecco, S Dell'Agnello, M Dell'Orso, S Demers, L Demortier, M Deninno, D De Pedis, PF Derwent, C Dionisi, JR Dittmann, A Dominguez, S Donati, M D'Onofrio, T Dorigo, N Eddy, R Erbacher, D Errede, S Errede
More details from the publisher

Measurement of the forward-backward charge asymmetry from W→ev production in pp̄ collisions at √s=1.96 TeV

Physical Review D - Particles, Fields, Gravitation and Cosmology 71:5 (2005) 1-9

Authors:

D Acosta, J Adelman, T Affolder, T Akimoto, MG Albrow, D Ambrose, S Amerio, D Amidei, A Anastassov, K Anikeev, A Annovi, J Antos, M Aoki, G Apollinari, T Arisawa, JF Arguin, A Artikov, W Ashmanskas, A Attal, F Azfar, P Azzi-Bacchetta, N Bacchetta, H Bachacou, W Badgett, A Barbaro-Galtieri, GJ Barker, VE Barnes, BA Barnett, S Baroiant, M Barone, G Bauer, F Bedeschi, S Behari, S Belforte, G Bellettini, J Bellinger, E Ben-Haim, D Benjamin, A Beretvas, A Bhatti, M Binkley, D Bisello, M Bishai, RE Blair, C Blocker, K Bloom, B Blumenfeld, A Bocci, A Bodek, G Bolla, A Bolshov, PSL Booth, D Bortoletto, J Boudreau, S Bourov, B Brau, C Bromberg, E Brubaker, J Budagov, HS Budd, K Burkett, G Busetto, P Bussey, KL Byrum, S Cabrera, M Campanelli, M Campbell, A Canepa, M Casarsa, D Carlsmith, S Carron, R Carosi, M Cavalli-Sforza, A Castro, P Catastini, D Cauz, A Cerri, L Cerrito, J Chapman, C Chen, YC Chen, M Chertok, G Chiarelli, G Chlachidze, F Chlebana, I Cho, K Cho, D Chokheli, JP Chou, ML Chu, S Chuang, JY Chung, WH Chung, YS Chung, CI Ciobanu, MA Ciocci, AG Clark, D Clark, M Coca, A Connolly

Abstract:

We report a measurement of the forward-backward charge asymmetry of electrons from W boson decays in pp̄ collisions at √s=1.96 TeV using a data sample of 170 pb-1 collected by the Collider Detector at Fermilab. The asymmetry is measured as a function of electron rapidity and transverse energy and provides new input on the momentum fraction dependence of the u and d quark parton distribution functions within the proton. © 2005 The American Physical Society.
More details from the publisher

Measurement of the moments of the hadronic invariant mass distribution in semileptonic B decays

Physical Review D - Particles, Fields, Gravitation and Cosmology 71:5 (2005) 1-9

Authors:

D Acosta, J Adelman, T Affolder, T Akimoto, MG Albrow, D Ambrose, S Amerio, D Amidei, A Anastassov, K Anikeev, A Annovi, J Antos, M Aoki, G Apollinari, T Arisawa, JF Arguin, A Artikov, W Ashmanskas, A Attal, F Azfar, P Azzi-Bacchetta, N Bacchetta, H Bachacou, W Badgett, A Barbaro-Galtieri, GJ Barker, VE Barnes, BA Barnett, S Baroiant, M Barone, G Bauer, F Bedeschi, S Behari, S Belforte, G Bellettini, J Bellinger, E Ben-Haim, D Benjamin, A Beretvas, A Bhatti, M Binkley, D Bisello, M Bishai, RE Blair, C Blocker, K Bloom, B Blumenfeld, A Bocci, A Bodek, G Bolla, A Bolshov, PSL Booth, D Bortoletto, J Boudreau, S Bourov, B Brau, C Bromberg, E Brubaker, J Budagov, HS Budd, K Burkett, G Busetto, P Bussey, KL Byrum, S Cabrera, M Campanelli, M Campbell, A Canepa, M Casarsa, D Carlsmith, S Carron, R Carosi, M Cavalli-Sforza, A Castro, P Catastini, D Cauz, A Cerri, L Cerrito, J Chapman, C Chen, YC Chen, M Chertok, G Chiarelli, G Chlachidze, F Chlebana, I Cho, K Cho, D Chokheli, JP Chou, ML Chu, S Chuang, JY Chung, WH Chung, YS Chung, CI Ciobanu, MA Ciocci, AG Clark, D Clark, M Coca, A Connolly

Abstract:

Using 180 pb -1 of data collected with the CDF II detector at the Tevatron, we measure the first two moments of the hadronic invariant mass-squared distribution in charmed semileptonic B decays. From these we determine the nonperturbative Heavy Quark Effective Theory parameters Λ and λ 1 used to relate the B meson semileptonic branching ratio to the CKM matrix element |V cb|. For a minimum lepton momentum of 0.7 GeV/c in the B rest frame we measure the first two moments of the D** → D (*)π component to be 〈m D**2〉 = (5.83 ± 0.16 stat ± 0.08 syst) GeV 2/c 4 and 〈(m D**2 - 〈m D**2〉) 2〉 = (1.30 ± 0.69 stat ± 0.22 syst) GeV 4/c 8. Combining these with the discrete mass terms from the D and D* mesons, we find the total moments to be 〈M Ξc2〉 - m̄ D2 = (0.467 ± 0.038 stat ± 0.068 syst GeV 2/c 4 and 〈(M Ξc2 - 〈M Ξc2〉) 2〉 = (1.05 ± 0.26 stat ± 0.13 syst) GeV 4/c 8, where m̄ D is the spin-averaged D mass. The systematic error is dominated by the uncertainties in the world-average branching ratios used to combine the D, D*, and D** contributions. The analysis makes no assumptions about the shape or resonant structure of the D** → D (*)π invariant mass distribution. © 2005 The American Physical Society.
More details from the publisher

Measurement of the tt̄ production cross section in pp̄ collisions at √s = 1.96 TeV using lepton + jets events with secondary vertex b -tagging

Physical Review D - Particles, Fields, Gravitation and Cosmology 71:5 (2005) 1-28

Authors:

D Acosta, J Adelman, T Affolder, T Akimoto, MG Albrow, D Ambrose, S Amerio, D Amidei, A Anastassov, K Anikeev, A Annovi, J Antos, M Aoki, G Apollinari, T Arisawa, JF Arguin, A Artikov, W Ashmanskas, A Attal, F Azfar, P Azzi-Bacchetta, N Bacchetta, H Bachacou, W Badgett, A Barbaro-Galtieri, GJ Barker, VE Barnes, BA Barnett, S Baroiant, M Barone, G Bauer, F Bedeschi, S Behari, S Belforte, G Bellettini, J Bellinger, E Ben-Haim, D Benjamin, A Beretvas, A Bhatti, M Binkley, D Bisello, M Bishai, RE Blair, C Blocker, K Bloom, B Blumenfeld, A Bocci, A Bodek, G Bolla, A Bolshov, PSL Booth, D Bortoletto, J Boudreau, S Bourov, C Bromberg, E Brubaker, J Budagov, HS Budd, K Burkett, G Busetto, P Bussey, KL Byrum, S Cabrera, M Campanelli, M Campbell, A Canepa, M Casarsa, D Carlsmith, S Carron, R Carosi, M Cavalli-Sforza, A Castro, P Catastini, D Cauz, A Cerri, C Cerri, L Cerrito, J Chapman, C Chen, YC Chen, M Chertok, G Chiarelli, G Chlachidze, F Chlebana, I Cho, K Cho, D Chokheli, ML Chu, S Chuang, JY Chung, WH Chung, YS Chung, CI Ciobanu, MA Ciocci, AG Clark, D Clark, M Coca, A Connolly, M Convery

Abstract:

We present a measurement of the tt̄ production cross section using events with one charged lepton and jets from pp̄ collisions at a center-of-mass energy of 1.96 TeV. In these events, heavy flavor quarks from top quark decay are identified with a secondary vertex tagging algorithm. From 162 pb-1 of data collected by the Collider Detector at Fermilab, a total of 48 candidate events are selected, where 13.5 ± 1.8 events are expected from background contributions. We measure a tt̄ production cross section of 5.6-1.1+1.2(stat.)-0.6+0.9(syst.) pb. © 2005 The American Physical Society.
More details from the publisher

Measurement of the J/ψ meson and b-hadron production cross sections in pp̄ collisions at √s = 1960 GeV

Physical Review D - Particles, Fields, Gravitation and Cosmology 71:3 (2005) 032001-1-032001-26

Authors:

DE Acosta, J Adelman, T Affolder, T Akimoto, MG Albrow, DJ Ambrose, S Amerio, D Amidei, A Anastassov, K Anikeev, A Annovi, J Antoš, M Aoki, G Apollinari, T Arisawa, JF Arguin, AM Artikov, WJ Ashmanskas, A Attal, F Azfar, P Azzi-Bacchetta, N Bacchetta, H Bachacou, WF Badgett, AA Barbaro-Galtieri, GJ Barker, VE Barnes, BA Barnett, S Baroiant, M Barone, G Bauer, F Bedeschi, S Behari, S Belforte, G Bellettini, JN Bellinger, E Ben-Haim, DP Benjamin, A Beretvas, AA Bhatti, ME Binkley, DB Bisello, MR Bishai, RE Blair, CA Blocker, K Bloom, BJ Blumenfeld, A Bocci, A Bodek, G Bolla, AA Bolshov, PSL Boóth, D Bortoletto, JF Boudreau, S Bourov, BP Brau, CM Bromberg, EM Brubaker, JA Budagov, HS Budd, K Burkett, G Busetto, PJ Bussey, KL Byrum, S Cabrera, M Campanelli, MK Campbell, A Canepa, M Casarsa, D Carlsmith, S Carron, R Carosi, MC Cavalli-Sforza, AJ Castro, PL Catastini, D Cauz, A Cerri, L Cerrito, JW Chapman, C Chen, Y Chen, MB Chertok, G Chiarelli, GA Chlachidze, FS Chlebana, L Cho, K Cho, D Chokheli, J Chou, M Chu, SHS Chuang, J Chung, WH Chung, Y Chung, CI Ciobanu, MA Ciocci, AG Clark, DE Clark, MN Coca, A Connolly, ME Convery, JS Conway, BD Cooper, M Cordelli, G Cortiana, J Cranshaw, J Cuevas, RL Culbertson, CA Currat, D Cyr, DW Dagenhart, S Da Ronco, S D'Auria, P De Barbaro, SD De Cecco, G De Lentdecker, S Dell'Agnello, M Dell'Orso, SM Demers, L Demortier, MM Deninno, D De Pedis, PF Derwent, C Dionisi, JR Dittmann, C Dörr, P Doksus, A Domínguez, S Donati, M Donegà, J Donini, M D'Onofrio, T Dorigo, DrollingerV, K Ebina, N Eddy, JE Ehlers, RP Ely, RD Erbacher, M Erdmann, D Errede, SM Errede, R Eusebi, H Fang, SM Farrington, I Fedorko, WT Fedorko, RG Feild, M Feindt, JP Fernández, C Ferretti, RD Field, GP Flanagan, BL Flaugher, LR Flores-Castillo, AD Foland, S Forrester, GW Foster, MEB Franklin, JC Freeman, Y Fujii, IK Furić, A Gajjar, AA Gallas, J Galyardt, M Gallinaro, M Garcia-Sciveres, AF Garfinkel, C Gay, HK Gerberich, DW Gerdes, EA Gerchtein, S Giagu, P Giannetti, AJ Gibson, KR Gibson, C Ginsburg, K Giolo, MP Giordani, M Giunta, GA Giurgiu, VV Glagolev, DA Glenzinskí, MS Gold, N Goldschmidt, DJ Goldstein, J Goldstein, G Gómez, G Gómez-Ceballos, MV Goncharov, O González, IV Gorelov, AT Goshaw, YN Gotra, K Goulianos, A Gresele, M Griffiths, C Grosso-Pilcher, U Grundler, M Guenther, JB Guimarães Da Costa, V Haber, K Hahn, SR Hahn, E Halkiadakis, A Hamilton, B Han, R Handler, F Happacher, K Hara, MF Hare, RF Harr, RM Harris, FX Hartmann, K Hatakeyama, J Hauser, CP Hays, HaywardH, EM Heider, B Heinemann, JG Heinrich, M Hennecke, M Herndon, CS Hill, D Hirschbuehl, A Höcker, D HoffmanK, A Holloway, S Hou, MA Houlden, BT Huffman, Y Huang, RE Hughes, JW Huston, K Ikado, JR Incandela, G Introzzi, M Iori, Y Ishizawa, C Ìşsever, A Ivanov, Y Iwata, B Iyutin, EB James, D Jang, J Jarrell, DT Jeans, HB Jensen, E Jeon, MK Jones, K Joo, S Jun, TR Junk, T Kamon, J Kang, MK Ünel, PE Karchin, SN Kartal, Y Kato, Y Kemp, RD Kephart, U Kerzel, V Khotilovich, BJ Kilminster, DH Kim, H Kim, J Kim, M Kim, M Kim, SB Kim, S Kim, T Kim, Y Kim, BT King, MH Kirby, LE Kirsch, S Klimenko, B Knuteson, B Ko, H Kobayashi, P Koehn, D Kong, K Kondo, J Königsberg, K Kordas, A Korn, AV Korytov, KA Kotelnikov, AV Kotwal, AI Kovalev, JA Kraus, IT Kravchenko, AE Kreymer, J Kroll, MC Kruse, V Krutelyov, SE Kuhlmann, S Kwang, AT Laasanen, S Lai, SS Lami, S Lammel, JM Lancaster, MA Lancaster, RL Lander, K Lannon, A Lath, G Latino, RTA Lauhakangas, I Lazzizzera, Y Le, C Lecci, TJ LeCompte, J Lee, J Lee, S Lee, RP Lefèvre, NT Leonardo, S Leone, SL Levy, JD Lewis, K Li, CS Lin, CSS Lin, MA Lindgren, TM Liss, A Lister, DO Litvintsev, T Liu, Y Liu, NS Lockyer, AY Loginov, M Loreti, PF Loverre, R Lu, D Lucchesi, PJ Lujan, PT Lukens, GA Lungu, LPR Lyons, JEA Lys, R Lysak, DM MacQueen, RL Madrak, K Maeshima, P Maksimović, L Malferrari, G Manca, RM Mǎrginean, C Marino, AJ Martin, MS Martin, VJ Martin, MI Martínez, T Maruyama, H Matsunaga, M Mattson, P Mazzanti, KS McFarland, D McGivern, PM McIntyre, PA McNamara, R NcNulty, A Mehta, S Menzemer, A Menzione, P Merkel, C Mesropian, AM Messina, T Miao, N Miladinovic, LM Miller, RJD Miller, JS Miller, R Miquel, S Miscetti, GV Mitselmakher, A Miyamoto, Y Miyazaki, N Moggi, B Mohr, RW Moore, MJ Morello, PAM Fernández, A Mukherjee, M Mulhearn, TA Müller, R Mumford, A Munar, PA Murat, JM Nachtman, S Nahn, I Nakamura, I Nakano, A Napier, R Napora, DV Naumov, V Necula, F Niell, JA Nielsen, CA Nelson, TK Nelson, C Neu, MS Neubauer, CB Newman-Holmes, TS Nigmanov, LJ Nodulman, O Norniella, K Oesterberg, T Ogawa, SH Oh, Y Oh, T Ohsugi, T Okusawa, RGC Oldeman, R Orava, W Orejudos, CE Pagliarone, E Palencia, R Paoletti, VK Papadimitriou, S Pashapour, JF Patrick, G Pauletta, MG Paulini, T Pauly, C Paus, DE Pellett, A Penzo, TJ Phillips, GM Piacentino, J Piedra, KT Pitts, CL Plager, A Pompoš, LG Pondrom, G Pope, X Portell, O Poukhov, F Prakoshyn, T Pratt, A Pronko, J Proudfoot, F Ptohos, G Punzi, JH Rademacker, MA Rahaman, A Rakitine, S Rappoccio, FD Ratnikov, H Ray, B Reisert, V Rekovic, PB Renton, M Rescigno, F Rimondi, K Rinnert, L Ristori, WJ Robertson, A Robson, T Rodrigo, S Rolli, L Rosenson, RM Roser, R Rossin, C Rott, JS Russ, VL Rusu, A Ruiz-Jimeno, DT Ryan, HMT Saarikko, S Sabik, AN Safonov, RDS St Denis, WK Sakumoto, G Salamanna, DP Saltzberg, CAS Sánchez, A Sansoni, L Santi, S Sarkar, K Sato, P Savard, A Savoy-Navarro, P Schlabach, EE Schmidt, MP Schmidt, M Schmitt, L Scodellaro, A Scribano, F Scuri, A Sedov, SC Seidel, Y Seiya, F Semeria, L Sexton-Kennedy, I Sfiligoi, MD Shapiro, TG Shears, PF Shepard, D Sherman, M Shimojima, MJ Shochet, Y Shon, I Shreyber, A Sidoti, JL Siegrist, M Šiket, AF Sill, PK Sinervo, AN Sisakyan, A Skiba, AJ Slaughter, K Śliwa, DV Smirnov, JRH Smith, FD Snider, R Snihur, A Soha, SV Somalwar, J Spalding, MA Spezziga, L Spiegel, F Spinella, M Spiropulu, P Squillacioti, H Stadie, B Stelzer, O Stelzer-Chilton, J Strologas, DD Stuart, AI Sukhanov, KCTO Sumorok, H Sun, T Suzuki, AC Taffard, R Tafirout, SF Takach, H Takano, R Takashima, Y Takeuchi, K Takikawa, M Tanaka, R Tanaka, N Tanimoto, S Tapprogge, M Tecchio, P Teng, K Terashi, RJ Tesarek, S Tether, J Thom, AS Thompson, EJ Thomson, PL Tipton, V Tiwari, SM Tkaczyk, D Toback, K Tollefson, T Tomura, D Tonelli, M Tönnesmann, SD Torre, D Torretta, S Tourneur, W Trischuk, J Tseng, R Tsuchiya, S Tsuno, D Tsybychev, N Turini, MF Turner, F Ukegawa, T Unverhau, S Uozumi, D Usynin, L Vacavant, A Vaiciulis, AV Varganov, ES Vataga, S Vejcik, GV Velev, V Veszprémi, G Veramendi, T Vickey, RA Vidal, I Vila, R Vilar, I Vollrath, I Volobouev, M Von Der Mey, PD Wágner, RG Wagner, RL Wagner, W Wagner, RS Wallny, T Walter, T Yamashita, K Yamamoto, Z Wan, M Wang, S Wang, A Warburton, BR Ward, S Waschke, DS Waters, TL Watts, MS Weber, WC Wester, B Whitehouse, AB Wicklund, EJ Wicklund, HH Williams, PJ Wilson, BL Winer, P Wittich, SA Wolbers, CE Wolfe, MW Wolter, M Worcester, SD Worm, TR Wright, X Wu, F Würthwein, AC Wyatt, A Yagil, C Yang, U Yang, W Yao, GP Yeh, K Yi, J Yoh, PS Yoon, K Yorita, T Yoshida, I Yu, S Yu, Z Yu, JC Yun, L Zanello, AM Zanetti, I Zaw, F Zetti, J Zhou, A Žsenei, S Zucchelli

Abstract:

We present a new measurement of the inclusive and differential production cross sections of J/ψ mesons and b hadrons in proton-antiproton collisions at √s = 1960 GeV. The data correspond to an integrated luminosity of 39.7 pb-1 collected by the CDF run II detector. We find the integrated cross section for inclusive J/ψ production for all transverse momenta from 0 to 20 GeV/c in the rapidity range |y| < 0.6 to be 4.08 ± 0.02(Stat)-0.33 +0.36(syst) μb. We separate the fraction of J/ψ events from the decay of the long-lived b hadrons using the lifetime distribution in all events with pT(J/ψ) > 1.25 GeV/c. We find the total cross section for b hadrons, including both hadrons and antihadrons, decaying to J/ψ with transverse momenta greater than 1.25 GeV/c in the rapidity range |y(J/ψ)| < 0.6 is 0.330 ± 0.005(stat) -0.033 +0.036(syst) μb. Using a Monte Carlo simulation of the decay kinematics of b hadrons to all final states containing a J/ψ, we extract the first measurement of the total single b-hadron cross section down to zero transverse momentum at √s = 1960 GeV. We find the total single b-hadron cross section integrated over all transverse momenta for b hadrons in the rapidity range |y| < 0.6 to be 17.6 ± 0.4(stat) -2.3 +2.5(syst) μb. © 2005 The American Physical Society.
More details from the publisher

Pagination

  • First page First
  • Previous page Prev
  • …
  • Page 155
  • Page 156
  • Page 157
  • Page 158
  • Current page 159
  • Page 160
  • Page 161
  • Page 162
  • Page 163
  • …
  • Next page Next
  • Last page Last

Footer Menu

  • Contact us
  • Giving to the Dept of Physics
  • Work with us
  • Media

User account menu

  • Log in

Follow us

FIND US

Clarendon Laboratory,

Parks Road,

Oxford,

OX1 3PU

CONTACT US

Tel: +44(0)1865272200

University of Oxfrod logo Department Of Physics text logo
IOP Juno Champion logo Athena Swan Silver Award logo

© University of Oxford - Department of Physics

Cookies | Privacy policy | Accessibility statement

Built by: Versantus

  • Home
  • Research
  • Study
  • Engage
  • Our people
  • News & Comment
  • Events
  • Our facilities & services
  • About us
  • Current students
  • Staff intranet