Search results for: P. Chang

Items from 1 to 20 out of 1,261 results

article

Search for a heavy resonance decaying to a top quark and a vector-like top quark at s = 13 $$ \sqrt{s}=13 $$ TeV

The CMS collaboration, A. M. Sirunyan, A. Tumasyan, W. Adam, more

Journal of High Energy Physics > 2017 > 2017 > 9 > 1-42

Abstract A search is presented for massive spin-1 Z^′ resonances decaying to a top quark and a heavy vector-like top quark partner T. The search is based on a 2.6 fb⁻¹ sample of proton-proton collisions at 13 TeV collected with the CMS detector at the LHC. The analysis is optimized for final states in which the T quark decays to a W boson and a bottom quark. The focus is on all-jet final states in...

article

Measurement of the t t ¯ $$ \mathrm{t}\overline{\mathrm{t}} $$ production cross section using events with one lepton and at least one jet in pp collisions at s = 13 $$ \sqrt{s}=13 $$ TeV

The CMS collaboration, A. M. Sirunyan, A. Tumasyan, W. Adam, more

Journal of High Energy Physics > 2017 > 2017 > 9 > 1-40

Abstract A measurement of the t t ¯ $$ \mathrm{t}\overline{\mathrm{t}} $$ production cross section at s = 13 $$ \sqrt{s}=13 $$ TeV is presented using proton-proton collisions, corresponding to an integrated luminosity of 2.2 fb⁻¹, collected with the CMS detector at the LHC. Final states with one isolated charged lepton (electron or muon) and at least one jet are selected and...

article

Measurement of the inclusive jet cross-sections in proton-proton collisions at s = 8 $$ \sqrt{s}=8 $$ TeV with the ATLAS detector

The ATLAS collaboration, M. Aaboud, G. Aad, B. Abbott, more

Journal of High Energy Physics > 2017 > 2017 > 9 > 1-54

Abstract Inclusive jet production cross-sections are measured in proton-proton collisions at a centre-of-mass energy of s = 8 $$ \sqrt{s}=8 $$ TeV recorded by the ATLAS experiment at the Large Hadron Collider at CERN. The total integrated luminosity of the analysed data set amounts to 20.2 fb⁻¹. Double-differential cross-sections are measured for jets defined by the anti-k_t jet clustering...

article

Identification and rejection of pile-up jets at high pseudorapidity with the ATLAS detector

M. Aaboud, G. Aad, B. Abbott, J. Abdallah, more

The European Physical Journal C > 2017 > 77 > 9 > 1-32

The rejection of forward jets originating from additional proton–proton interactions (pile-up) is crucial for a variety of physics analyses at the LHC, including Standard Model measurements and searches for physics beyond the Standard Model. The identification of such jets is challenging due to the lack of track and vertex information in the pseudorapidity range $$|\eta |>2.5$$ | η | >...

article

Search for physics beyond the standard model in events with two leptons of same sign, missing transverse momentum, and jets in proton–proton collisions at $$\sqrt{s} = 13\,\text {TeV} $$ s = 13 TeV

A. M. Sirunyan, A. Tumasyan, W. Adam, F. Ambrogi, more

The European Physical Journal C > 2017 > 77 > 9 > 1-31

A data sample of events from proton–proton collisions with two isolated same-sign leptons, missing transverse momentum, and jets is studied in a search for signatures of new physics phenomena by the CMS Collaboration at the LHC. The data correspond to an integrated luminosity of 35.9 $$\,\text {fb}^{-\text {1}}$$ fb - 1 , and a center-of-mass energy of 13 $$\,\text {TeV}$$ TeV...

article

The Effects of Child Life Specialists on Success Rates of Intravenous Cannulation

Soumya Murag, Cristie Suzukawa, Todd P. Chang

Journal of Pediatric Nursing > 2017 > 36 > Complete > 236-240

Child life specialists (CLS) work with children directly to minimize long-term psychological sequelae of traumatic or medical events such as intravenous cannulation. There has been little done to measure how CLS impact outcomes of medical procedures. The objective of this study is to determine the impact of interventions by CLS upon successful attainment of intravenous (IV) cannulation among pediatric...

article

Erratum to: Measurement of the charge asymmetry in top-quark pair production in the lepton-plus-jets final state in pp collision data at $$\sqrt{s}=8$$ s = 8 TeV with the ATLAS detector

Atlas Collaboration, G. Aad, B. Abbott, J. Abdallah, more

The European Physical Journal C > 2017 > 77 > 8 > 1-15

The online version of the original article can be found under doi: 10.1140/epjc/s10052-016-3910-6 .

article

Measurement of $$WW/WZ \rightarrow \ell \nu q q^{\prime }$$ W W / W Z → ℓ ν q q ′ production with the hadronically decaying boson reconstructed as one or two jets in pp collisions at $$\sqrt{s} =8~\text {TeV}$$ s = 8 TeV with ATLAS, and constraints on anomalous gauge couplings

M. Aaboud, G. Aad, B. Abbott, O. Abdinov, more

The European Physical Journal C > 2017 > 77 > 8 > 1-31

This paper presents a study of the production of WW or WZ boson pairs, with one W boson decaying to $$e\nu $$ e ν or $$\mu \nu $$ μ ν and one W or Z boson decaying hadronically. The analysis uses $$20.2~\text{ fb }^{-1}$$ 20.2 fb - 1 of $$\sqrt{s} =8~\text {TeV}$$ s = 8 TeV pp collision data, collected by the ATLAS detector at the Large Hadron...

article

Search for top quark partners with charge 5/3 in proton-proton collisions at s = 13 $$ \sqrt{s}=13 $$ TeV

The CMS collaboration, A. M. Sirunyan, A. Tumasyan, W. Adam, more

Journal of High Energy Physics > 2017 > 2017 > 8 > 1-43

Abstract A search for the production of heavy partners of the top quark with charge 5/3 (X_5/3) decaying into a top quark and a W boson is performed with a data sample corresponding to an integrated luminosity of 2.3 fb⁻¹, collected in proton-proton collisions at a center-of-mass energy of 13 TeV with the CMS detector at the CERN LHC. Final states with either a pair of same-sign leptons or a single...

article

Search for pair production of vector-like top quarks in events with one lepton, jets, and missing transverse momentum in s = 13 $$ \sqrt{s}=13 $$ TeV pp collisions with the ATLAS detector

The ATLAS collaboration, M. Aaboud, G. Aad, B. Abbott, more

Journal of High Energy Physics > 2017 > 2017 > 8 > 1-40

Abstract The results of a search for vector-like top quarks using events with exactly one lepton, at least four jets, and large missing transverse momentum are reported. The search is optimised for pair production of vector-like top quarks in the Z(→νν) t + X decay channel. LHC pp collision data at a centre-of-mass energy of s = 13 $$ \sqrt{s}=13 $$ TeV recorded by the ATLAS detector in...

article

Measurement of the inclusive energy spectrum in the very forward direction in proton-proton collisions at s = 13 $$ \sqrt{s}=13 $$ TeV

The CMS collaboration, A. M. Sirunyan, A. Tumasyan, W. Adam, more

Journal of High Energy Physics > 2017 > 2017 > 8 > 1-31

Abstract The differential cross section for inclusive particle production as a function of energy in proton-proton collisions at a center-of-mass energy of 13 TeV is measured in the very forward region of the CMS detector. The measurement is based on data collected with the CMS apparatus at the LHC, and corresponds to an integrated luminosity of 0.34 μb⁻¹. The energy is measured in the CASTOR calorimeter,...

article

The Approach to Antibodies After Heart Transplantation

Olivia N. Gilbert, Patricia P. Chang

Current Transplantation Reports > 2017 > 4 > 3 > 243-251

Purpose of Review This review summarizes recent data about antibodies after cardiac transplantation, what testing modalities are available and how frequently to employ them, and when treatment is necessary. Recent Findings Technologies available for antibody detection have progressed over the past couple decades. New and preformed antibodies are associated with worse outcomes in transplant recipients...

article

Measurement of the differential inclusive B+ hadron cross sections in pp collisions at s=13 TeV

V. Khachatryan, A.M. Sirunyan, A. Tumasyan, W. Adam, more

Physics Letters B > 2017 > 771 > Complete > 435-456

article

Search for single production of a heavy vector-like T quark decaying to a Higgs boson and a top quark with a lepton and jets in the final state

V. Khachatryan, A.M. Sirunyan, A. Tumasyan, W. Adam, more

Physics Letters B > 2017 > 771 > Complete > 80-105

article

Fiducial, total and differential cross-section measurements of t-channel single top-quark production in pp collisions at 8 TeV using data collected by the ATLAS detector

M. Aaboud, G. Aad, B. Abbott, J. Abdallah, more

The European Physical Journal C > 2017 > 77 > 8 > 1-46

Detailed measurements of t-channel single top-quark production are presented. They use 20.2 fb $$^{-1}$$ - 1 of data collected by the ATLAS experiment in proton–proton collisions at a centre-of-mass energy of 8 TeV at the LHC. Total, fiducial and differential cross-sections are measured for both top-quark and top-antiquark production. The fiducial cross-section is measured with a precision...

article

Erratum to: search for dark matter in proton-proton collisions at 8 TeV with missing transverse momentum and vector boson tagged jets

The CMS collaboration, V. Khachatryan, A. M. Sirunyan, A. Tumasyan, more

Journal of High Energy Physics > 2017 > 2017 > 8 > 1-21

article

Measurement of the k_t splitting scales in Z → ℓℓ events in pp collisions at s = 8 $$ \sqrt{s}=8 $$ TeV with the ATLAS detector

The ATLAS collaboration, M. Aaboud, G. Aad, B. Abbott, more

Journal of High Energy Physics > 2017 > 2017 > 8 > 1-41

Abstract A measurement of the splitting scales occuring in the k_t jet-clustering algorithm is presented for final states containing a Z boson. The measurement is done using 20.2 fb⁻¹ of proton-proton collision data collected at a centre-of-mass energy of s = 8 $$ \sqrt{s}=8 $$ TeV by the ATLAS experiment at the LHC in 2012. The measurement is based on chargedparticle track information,...

article

Searches for W′ bosons decaying to a top quark and a bottom quark in proton-proton collisions at 13 TeV

The CMS collaboration, A. M. Sirunyan, A. Tumasyan, W. Adam, more

Journal of High Energy Physics > 2017 > 2017 > 8 > 1-42

Abstract Searches are presented for heavy gauge bosons decaying into a top and a bottom quark in data collected by the CMS experiment at s = 13 $$ \sqrt{s}=13 $$ TeV that correspond to an integrated luminosity of 2.2 and 2.6 fb⁻¹ in the leptonic and hadronic analyses, respectively. Two final states are analyzed, one containing a single electron, or muon, and missing transverse momentum,...

article

Acute stress disorder symptoms after evaluation for acute coronary syndrome predict 30-day readmission

Jennifer A. Sumner, Ian M. Kronish, Bernard P. Chang, Ying Wei, more

International Journal of Cardiology > 2017 > 240 > Complete > 87-89

Thirty-day readmissions are a major concern for hospitals. Even though numerous readmission risk prediction models have been developed, their performance has been modest, and few predictors are modifiable. Stress is a modifiable factor that may increase risk of adverse post-hospitalization outcomes. We examined whether posttraumatic stress days after evaluation for acute coronary syndrome (ACS)—termed...

article

Search for direct top squark pair production in events with a Higgs or Z boson, and missing transverse momentum in s = 13 $$ \sqrt{s}=13 $$ TeV pp collisions with the ATLAS detector

The ATLAS collaboration, M. Aaboud, G. Aad, B. Abbott, more

Journal of High Energy Physics > 2017 > 2017 > 8 > 1-46

Abstract A search for direct top squark pair production resulting in events with either a same-flavour opposite-sign dilepton pair with invariant mass compatible with a Z boson or a pair of jets compatible with a Standard Model (SM) Higgs boson (h) is presented. Requirements on the missing transverse momentum, together with additional selections on leptons, jets, jets identified as originating from...

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Search results for: P. Chang

Search for a heavy resonance decaying to a top quark and a vector-like top quark at s = 13 $$ \sqrt{s}=13 $$ TeV

Measurement of the t t ¯ $$ \mathrm{t}\overline{\mathrm{t}} $$ production cross section using events with one lepton and at least one jet in pp collisions at s = 13 $$ \sqrt{s}=13 $$ TeV

Measurement of the inclusive jet cross-sections in proton-proton collisions at s = 8 $$ \sqrt{s}=8 $$ TeV with the ATLAS detector

Identification and rejection of pile-up jets at high pseudorapidity with the ATLAS detector

Search for physics beyond the standard model in events with two leptons of same sign, missing transverse momentum, and jets in proton–proton collisions at $$\sqrt{s} = 13\,\text {TeV} $$ s = 13 TeV

The Effects of Child Life Specialists on Success Rates of Intravenous Cannulation

Erratum to: Measurement of the charge asymmetry in top-quark pair production in the lepton-plus-jets final state in pp collision data at $$\sqrt{s}=8$$ s = 8 TeV with the ATLAS detector

Measurement of $$WW/WZ \rightarrow \ell \nu q q^{\prime }$$ W W / W Z → ℓ ν q q ′ production with the hadronically decaying boson reconstructed as one or two jets in pp collisions at $$\sqrt{s} =8~\text {TeV}$$ s = 8 TeV with ATLAS, and constraints on anomalous gauge couplings

Search for top quark partners with charge 5/3 in proton-proton collisions at s = 13 $$ \sqrt{s}=13 $$ TeV

Search for pair production of vector-like top quarks in events with one lepton, jets, and missing transverse momentum in s = 13 $$ \sqrt{s}=13 $$ TeV pp collisions with the ATLAS detector

Measurement of the inclusive energy spectrum in the very forward direction in proton-proton collisions at s = 13 $$ \sqrt{s}=13 $$ TeV

The Approach to Antibodies After Heart Transplantation

Measurement of the differential inclusive B+ hadron cross sections in pp collisions at s=13 TeV

Search for single production of a heavy vector-like T quark decaying to a Higgs boson and a top quark with a lepton and jets in the final state

Fiducial, total and differential cross-section measurements of t-channel single top-quark production in pp collisions at 8 TeV using data collected by the ATLAS detector

Erratum to: search for dark matter in proton-proton collisions at 8 TeV with missing transverse momentum and vector boson tagged jets

Measurement of the k_t splitting scales in Z → ℓℓ events in pp collisions at s = 8 $$ \sqrt{s}=8 $$ TeV with the ATLAS detector

Searches for W′ bosons decaying to a top quark and a bottom quark in proton-proton collisions at 13 TeV

Acute stress disorder symptoms after evaluation for acute coronary syndrome predict 30-day readmission

Search for direct top squark pair production in events with a Higgs or Z boson, and missing transverse momentum in s = 13 $$ \sqrt{s}=13 $$ TeV pp collisions with the ATLAS detector

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