Evidence for s-channel single-top-quark production in events with one charged lepton and two jets at CDF.

نویسندگان

  • T Aaltonen
  • S Amerio
  • D Amidei
  • A Anastassov
  • A Annovi
  • J Antos
  • G Apollinari
  • J A Appel
  • T Arisawa
  • A Artikov
  • J Asaadi
  • W Ashmanskas
  • B Auerbach
  • A Aurisano
  • F Azfar
  • W Badgett
  • T Bae
  • A Barbaro-Galtieri
  • V E Barnes
  • B A Barnett
  • P Barria
  • P Bartos
  • M Bauce
  • F Bedeschi
  • S Behari
  • G Bellettini
  • J Bellinger
  • D Benjamin
  • A Beretvas
  • A Bhatti
  • K R Bland
  • B Blumenfeld
  • A Bocci
  • A Bodek
  • D Bortoletto
  • J Boudreau
  • A Boveia
  • L Brigliadori
  • C Bromberg
  • E Brucken
  • J Budagov
  • H S Budd
  • K Burkett
  • G Busetto
  • P Bussey
  • P Butti
  • A Buzatu
  • A Calamba
  • S Camarda
  • M Campanelli
  • F Canelli
  • B Carls
  • D Carlsmith
  • R Carosi
  • S Carrillo
  • B Casal
  • M Casarsa
  • A Castro
  • P Catastini
  • D Cauz
  • V Cavaliere
  • M Cavalli-Sforza
  • A Cerri
  • L Cerrito
  • Y C Chen
  • M Chertok
  • G Chiarelli
  • G Chlachidze
  • K Cho
  • D Chokheli
  • A Clark
  • C Clarke
  • M E Convery
  • J Conway
  • M Corbo
  • M Cordelli
  • C A Cox
  • D J Cox
  • M Cremonesi
  • D Cruz
  • J Cuevas
  • R Culbertson
  • N d'Ascenzo
  • M Datta
  • P de Barbaro
  • L Demortier
  • M Deninno
  • M D'Errico
  • F Devoto
  • A Di Canto
  • B Di Ruzza
  • J R Dittmann
  • S Donati
  • M D'Onofrio
  • M Dorigo
  • A Driutti
  • K Ebina
  • R Edgar
  • A Elagin
  • R Erbacher
  • S Errede
  • B Esham
  • S Farrington
  • J P Fernández Ramos
  • R Field
  • G Flanagan
  • R Forrest
  • M Franklin
  • J C Freeman
  • H Frisch
  • Y Funakoshi
  • C Galloni
  • A F Garfinkel
  • P Garosi
  • H Gerberich
  • E Gerchtein
  • S Giagu
  • V Giakoumopoulou
  • K Gibson
  • C M Ginsburg
  • N Giokaris
  • P Giromini
  • G Giurgiu
  • V Glagolev
  • D Glenzinski
  • M Gold
  • D Goldin
  • A Golossanov
  • G Gomez
  • G Gomez-Ceballos
  • M Goncharov
  • O González López
  • I Gorelov
  • A T Goshaw
  • K Goulianos
  • E Gramellini
  • S Grinstein
  • C Grosso-Pilcher
  • R C Group
  • J Guimaraes da Costa
  • S R Hahn
  • J Y Han
  • F Happacher
  • K Hara
  • M Hare
  • R F Harr
  • T Harrington-Taber
  • K Hatakeyama
  • C Hays
  • J Heinrich
  • M Herndon
  • A Hocker
  • Z Hong
  • W Hopkins
  • S Hou
  • R E Hughes
  • U Husemann
  • M Hussein
  • J Huston
  • G Introzzi
  • M Iori
  • A Ivanov
  • E James
  • D Jang
  • B Jayatilaka
  • E J Jeon
  • S Jindariani
  • M Jones
  • K K Joo
  • S Y Jun
  • T R Junk
  • M Kambeitz
  • T Kamon
  • P E Karchin
  • A Kasmi
  • Y Kato
  • W Ketchum
  • J Keung
  • B Kilminster
  • D H Kim
  • H S Kim
  • J E Kim
  • M J Kim
  • S H Kim
  • S B Kim
  • Y J Kim
  • Y K Kim
  • N Kimura
  • M Kirby
  • K Knoepfel
  • K Kondo
  • D J Kong
  • J Konigsberg
  • A V Kotwal
  • M Kreps
  • J Kroll
  • M Kruse
  • T Kuhr
  • M Kurata
  • A T Laasanen
  • S Lammel
  • M Lancaster
  • K Lannon
  • G Latino
  • H S Lee
  • J S Lee
  • S Leo
  • S Leone
  • J D Lewis
  • A Limosani
  • E Lipeles
  • A Lister
  • H Liu
  • Q Liu
  • T Liu
  • S Lockwitz
  • A Loginov
  • D Lucchesi
  • A Lucà
  • J Lueck
  • P Lujan
  • P Lukens
  • G Lungu
  • J Lys
  • R Lysak
  • R Madrak
  • P Maestro
  • S Malik
  • G Manca
  • A Manousakis-Katsikakis
  • L Marchese
  • F Margaroli
  • P Marino
  • M Martínez
  • K Matera
  • M E Mattson
  • A Mazzacane
  • P Mazzanti
  • R McNulty
  • A Mehta
  • P Mehtala
  • C Mesropian
  • T Miao
  • D Mietlicki
  • A Mitra
  • H Miyake
  • S Moed
  • N Moggi
  • C S Moon
  • R Moore
  • M J Morello
  • A Mukherjee
  • Th Muller
  • P Murat
  • M Mussini
  • J Nachtman
  • Y Nagai
  • J Naganoma
  • I Nakano
  • A Napier
  • J Nett
  • C Neu
  • T Nigmanov
  • L Nodulman
  • S Y Noh
  • O Norniella
  • L Oakes
  • S H Oh
  • Y D Oh
  • I Oksuzian
  • T Okusawa
  • R Orava
  • L Ortolan
  • C Pagliarone
  • E Palencia
  • P Palni
  • V Papadimitriou
  • W Parker
  • G Pauletta
  • M Paulini
  • C Paus
  • T J Phillips
  • G Piacentino
  • E Pianori
  • J Pilot
  • K Pitts
  • C Plager
  • L Pondrom
  • S Poprocki
  • K Potamianos
  • A Pranko
  • F Prokoshin
  • F Ptohos
  • G Punzi
  • N Ranjan
  • I Redondo Fernández
  • P Renton
  • M Rescigno
  • F Rimondi
  • L Ristori
  • A Robson
  • T Rodriguez
  • S Rolli
  • M Ronzani
  • R Roser
  • J L Rosner
  • F Ruffini
  • A Ruiz
  • J Russ
  • V Rusu
  • W K Sakumoto
  • Y Sakurai
  • L Santi
  • K Sato
  • V Saveliev
  • A Savoy-Navarro
  • P Schlabach
  • E E Schmidt
  • T Schwarz
  • L Scodellaro
  • F Scuri
  • S Seidel
  • Y Seiya
  • A Semenov
  • F Sforza
  • S Z Shalhout
  • T Shears
  • P F Shepard
  • M Shimojima
  • M Shochet
  • I Shreyber-Tecker
  • A Simonenko
  • K Sliwa
  • J R Smith
  • F D Snider
  • H Song
  • V Sorin
  • R St Denis
  • M Stancari
  • D Stentz
  • J Strologas
  • Y Sudo
  • A Sukhanov
  • I Suslov
  • K Takemasa
  • Y Takeuchi
  • J Tang
  • M Tecchio
  • P K Teng
  • J Thom
  • E Thomson
  • V Thukral
  • D Toback
  • S Tokar
  • K Tollefson
  • T Tomura
  • D Tonelli
  • S Torre
  • D Torretta
  • P Totaro
  • M Trovato
  • F Ukegawa
  • S Uozumi
  • G Velev
  • C Vellidis
  • C Vernieri
  • M Vidal
  • R Vilar
  • J Vizán
  • M Vogel
  • G Volpi
  • F Vázquez
  • P Wagner
  • R Wallny
  • S M Wang
  • D Waters
  • W C Wester
  • D Whiteson
  • A B Wicklund
  • S Wilbur
  • H H Williams
  • J S Wilson
  • P Wilson
  • B L Winer
  • P Wittich
  • S Wolbers
  • H Wolfe
  • T Wright
  • X Wu
  • Z Wu
  • K Yamamoto
  • D Yamato
  • T Yang
  • U K Yang
  • Y C Yang
  • W-M Yao
  • G P Yeh
  • K Yi
  • J Yoh
  • K Yorita
  • T Yoshida
  • G B Yu
  • I Yu
  • A M Zanetti
  • Y Zeng
  • C Zhou
  • S Zucchelli
چکیده

We report evidence for s-channel single-top-quark production in proton-antiproton collisions at center-of-mass energy sqrt[s] = 1.96 TeV using a data set that corresponds to an integrated luminosity of 9.4 fb(-1) collected by the Collider Detector at Fermilab. We select events consistent with the s-channel process including two jets and one leptonically decaying W boson. The observed significance is 3.8 standard deviations with respect to the background-only prediction. Assuming a top-quark mass of 172.5 GeV/c(2), we measure the s-channel cross section to be 1.41(-0.42)(+0.44) pb.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Measurement of Single Top Quark Production in 7.5 fb−1 of CDF Data Using Neural Networks

We report a measurement of single top quark production in lepton plus jets final state using 7.5 fb−1 of pp̄ collision data collected by CDF Run II experiment. We select events in the W + jets topology consistent with the signature of a charged lepton (electron or muon), large missing transverse energy ( 6 ET ) from the W boson decay and two or three jets, at least one of them is required to be ...

متن کامل

First Search for s-channel Electroweak Single Top Quark Production in the Missing Energy Plus Jets Topology and Combination with the Same Search in the Lepton Plus Jets Topology using the Full CDF II Data Sett

The first search for electroweak single top quark production from the exchange of an s-channel virtual W boson using a data sample composed of events with an imbalance in the total transverse momentum, b-tagged jets, and no identified leptons (/ ET bb̄) is presented. The full CDF II data set, corresponding to an integrated luminosity of 9.45 fb−1 from Fermilab Tevatron proton-antiproton collisio...

متن کامل

Enhancing the Top Signal at Tevatron Using Neural Nets *

We show that Neural Nets can be useful for top analysis at Tevatron. The main features of t ¯ t and background events on a mixed sample are projected in a single output, which controls the efficiency and purity of the t ¯ t signal. The announced discovery of the top quark by CDF [1] at Tevatron has originated a big excitation in the scientific community. Although the statistics is too limited †...

متن کامل

Top Quark Pair Production Cross Section and Forward-Backward Asymmetry at the Tevatron

The study of top quark pair production at the Tevatron is now entering the realm of precision physics. With 2.8 fb−1 of CDF data there are over 1200 reconstructed tt̄ events in the lepton + jets channel. As the integrated luminosity increases, it is possible to improve not only measurements of the properties of the top quark but also maybe to search for new physics by comparing the tt̄ cross sect...

متن کامل

Combined template-based Top Quark Mass Measurement in the Lepton+Jets and Dileptons Channels Using 4.8 fb−1 of data

We report on a simultaneous measurement of the top quark mass (Mtop) in the Lepton+Jets and Dilepton channels using pp̄ collisions at √ s = 1.96 TeV from 4.8 fb −1 of data collected with the CDF detector at the Fermilab Tevatron. In the Lepton+Jets channel, a top quark mass (m t ) is reconstructed for every event by minimizing a χ-like function to the overconstrained kinematics of the tt̄ system....

متن کامل

Top Mass Measurement at Cdf

We report on recent measurements of the top quark mass using tt̄ candidate events selected in ≃ 320 pb of data from the ”Run II” operation period of the Tevatron pp̄ collider. More emphasis is given on the best single measurement to date (Mtop = 173.5 +3.9 −3.8 GeV/c ), provided by CDF using the ”lepton plus jets” channel, where one W decays to a lepton-neutrino pair and the other into quarks (to...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:
  • Physical review letters

دوره 112 23  شماره 

صفحات  -

تاریخ انتشار 2014