Browsing by Author "(ORCID 0000-0002-0283-5234 & YÖK ID 124605) Işıldak, Bora"
Now showing items 261-280 of 930
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Measurement of the ratio B(B<inf>s</inf>0 → J/ψf<inf>0</inf>(980))/B(B<inf>s</inf>0 → J/ψφ(1020)) in pp collisions at √s=7 TeV
Khachatryan, V.; Işıldak, Bora (Elsevier, 2016-05-10)A measurement of the ratio of the branching fractions of the Bs0 meson to J/ψf0(980) and to J/ψφ(1020) is presented. The J/ψ, f0(980), and φ(1020) are observed through their decays to μ+μ-, π+π-, and K+K-, respectively. ... -
Measurement of the ratio B(t -> Wb)/B(t -> Wq) in pp collisions at root s=8 TeV
Chatrchyan, S.; Işıldak, Bora (Elsevier, 2014-09-07)The ratio of the top-quark branching fractions R = B(t --> Wb)/B(t --> Wq), where the denominator includes the sum over all down-type quarks (q = b, s, d), is measured in the t (t) over bar dilepton final state with ... -
Measurement of the ratio of inclusive jet cross sections using the anti-k(T) algorithm with radius parameters R=0.5 and 0.7 in pp collisions at root s=7 TeV
Chatrchyan, S.; Işıldak, Bora (American Physical Society, 2014-10-01)Measurements of the inclusive jet cross section with the anti-kT clustering algorithm are presented for two radius parameters, R=0.5 and 0.7. They are based on data from LHC proton-proton collisions at s√=7 TeV corresponding ... -
Measurement of the ratio of the inclusive 3-jet cross section to the inclusive 2-jet cross section in pp collisions at root s=7 TeV and first determination of the strong coupling constant in the TeV range
Chatrchyan, S.; Işıldak, Bora (Springer Science+Business Media, 2013-10)A measurement is presented of the ratio of the inclusive 3-jet cross section to the inclusive 2-jet cross section as a function of the average transverse momentum, < p(T1,2)>, of the two leading jets in the event. The data ... -
Measurement of the ratio of the production cross sections times branching fractions of B c ± → J/ψπ ± and B± → J/ψK ± and B(B±c→J/ψπ±π±π∓)/B(B±c→J/ψπ±)B(Bc±→J/ψπ±π±π∓)/B(Bc±→J/ψπ±) in pp collisions at s√=7s=7 TeV
Chatrchyan, S.; Işıldak, Bora (Springer Science+Business Media, 2015-01)The ratio of the production cross sections times branching fractions (σ(B±c)B(B±c→J/ψπ±))/(σ(B±)B(B±→J/ψK±))(σ(Bc±)B(Bc±→J/ψπ±))/(σ(B±)B(B±→J/ψK±)) is studied in proton-proton collisions at a center-of-mass energy of 7 ... -
Measurement of the semileptonic t t ¯ + γ production cross section in pp collisions at √s=8 TeV
Sirunyan, A. M.; Işıldak, Bora (Springer International Publishing, 2017-10-02)A measurement of the cross section for top quark-antiquark ( tt¯tt¯ ) pairs produced in association with a photon in proton-proton collisions at s√=8s=8 TeV is presented. The analysis uses data collected with the CMS ... -
Measurement of the single top quark and antiquark production cross sections in the tchannel and their ratio in proton-proton collisions at √s=13 TeV
Sirunyan, A. M.; Işıldak, Bora (Elsevier, 2020-01-10)Measurements of the cross sections for the production of single top quarks and antiquarks in the t channel, and their ratio, are presented for proton-proton collisions at a center-of-mass energy of 13 TeV. The data set ... -
Measurement of the single-top-quark t-channel cross section in pp collisions at root s=7 TeV
Chatrchyan, S.; Işıldak, Bora (Springer Science+Business Media, 2012-12)A measurement of the single-top-quark t-channel production cross section in pp collisions at root s = 7TeV with the CMS detector at the LHC is presented. Two different and complementary approaches have been followed. The ... -
Measurement of the sum of WW and WZ production with W plus dijet events in pp collisions at root s=7 TeV
Chatrchyan, S.; Işıldak, Bora (Springer Science+Business Media, 2013-02)A measurement of the inclusive WW+WZ diboson production cross section in proton-proton collisions is reported, based on events containing a leptonically decaying W boson and exactly two jets. The data sample, collected at ... -
Measurement of the t t ¯ production cross section in the eμ channel in proton-proton collisions at √s = 7 and 8 TeV
Khachatryan, V.; Işıldak, Bora (Springer Nature, 2016-08)The inclusive cross section for top quark pair production is measured in proton-proton collisions at s√=7s=7 and 8 TeV, corresponding to 5.0 and 19.7 fb−1, respectively, with the CMS experiment at the LHC. The cross ... -
Measurement of the t(t)over-bar production cross section in pp collisions at root s=7 TeV with lepton plus jets final states
Chatrchyan, S.; Işıldak, Bora (Elsevier, 2013-03-13)A measurement of the a production cross section in pp collisions at root s = 7 TeV is presented. The results are based on data corresponding to an integrated luminosity of 2.3 fb(-1) collected by the CMS detector at the ... -
Measurement of the t(t)over-bar production cross section in the all-jet final state in pp collisions at root s=7 TeV
Chatrchyan, S.; Işıldak, Bora (Springer Science+Business Media, 2013-05)A measurement is presented of the t (t) over bar production cross section (sigma(t (t) over bar)) in proton-proton collisions at a centre-of-mass energy of 7 TeV, in the all-jet final state that contains at least six jets, ... -
Measurement of the t(t)over-bar production cross section in the tau plus jets channel in pp collisions at root s=7 TeV
Chatrchyan, S.; Işıldak, Bora (Springer Science+Business Media, 2013-04)The top-quark pair production cross section in 7 TeV center-of-mass energy proton-proton collisions is measured using data collected by the CMS detector at the LHC. The measurement uses events with one jet identified as a ... -
Measurement of the t(t)over-bar production cross section using events in the e mu final state in pp collisions at root s=13 TeV
Khachatryan, V.; Işıldak, Bora (Springer International Publishing, 2017)The cross section of top quark-antiquark pair production in proton-proton collisions at root s = 13 TeV is measured by the CMS experiment at the LHC, using data corresponding to an integrated luminosity of 2.2 fb(-1). The ... -
Measurement of the t-channel single-top-quark production cross section and of the |V (tb)| CKM matrix element in pp collisions at root s=8 TeV
Chatrchyan, S.; Işıldak, Bora (Springer Science+Business Media, 2014-06)Measurements are presented of the t-channel single-top-quark production cross section in proton-proton collisions at root s = 8 TeV. The results are based on a data sample corresponding to an integrated luminosity of 19.7 ... -
Measurement of the top quark forward-backward production asymmetry and the anomalous chromoelectric and chromomagnetic moments in pp collisions at √s = 13 TeV
Sirunyan, A. M.; Işıldak, Bora (Springer Nature, 2020-06-24)The parton-level top quark (t) forward-backward asymmetry and the anomalous chromoelectric ((d) over cap (t)) and chromomagnetic ((mu) over capt) moments have been measured using LHC pp collisions at a center-of-mass energy ... -
Measurement of the top quark mass in the all-jets final state at s√ = 13 TeV and combination with the lepton+jets channel
Sirunyan, A. M.; Işıldak, Bora (Springer Nature, 2019-04-06)A top quark mass measurement is performed using 35.9 fb - 1 of LHC proton- proton collision data collected with the CMS detector at v s = 13 TeV. The measurement uses the tt all- jets final state. A kinematic fit is performed ... -
Measurement of the top quark mass in the dileptonic t¯t decay channel using the mass observables Mbl, MT2, and Mblν in pp collisions at √s=8TeV
Sirunyan, A. M.; Işıldak, Bora (American Physical Society, 2017-08-22)A measurement of the top quark mass (M-t) in the dileptonic t (t) over bar decay channel is performed using data from proton-proton collisions at a center-of-mass energy of 8 TeV. The data was recorded by the CMS experiment ... -
Measurement of the top quark mass using a profile likelihood approach with the lepton + jets final states in proton–proton collisions at √s = 13 TeV
Tumasyan, A.; Işıldak, Bora (Springer, 2023-10-25)The mass of the top quark is measured in 36.3 fb-1 of LHC proton–proton collision data collected with the CMS detector at s=13TeV . The measurement uses a sample of top quark pair candidate events containing one isolated ... -
Measurement of the top quark mass using charged particles in pp collisions at s =8 TeV
Khachatryan, V.; Işıldak, Bora (American Physical Society, 2016-05-01)A novel technique for measuring the mass of the top quark that uses only the kinematic properties of its charged decay products is presented. Top quark pair events with final states with one or two charged leptons and ...
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