http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : ATLAS Collaboration (검색결과 4 건)
- 무료
- 기관 내 무료
- 유료
-
North Holland 2014 Nuclear Physics, Section B Vol.889 No.-
A measurement of the total pp cross section at the LHC at s=7 TeV is presented. In a special run with high-β<SUP>@?</SUP> beam optics, an integrated luminosity of 80 μb<SUP>-1</SUP> was accumulated in order to measure the differential elastic cross section as a function of the Mandelstam momentum transfer variable t. The measurement is performed with the ALFA sub-detector of ATLAS. Using a fit to the differential elastic cross section in the |t| range from 0.01 GeV<SUP>2</SUP> to 0.1 GeV<SUP>2</SUP> to extrapolate to |t|→0, the total cross section, σ<SUB>tot</SUB>(pp→X), is measured via the optical theorem to be:σ<SUB>tot</SUB>(pp→X)=95.35+/-0.38(stat.)+/-1.25(exp.)+/-0.37(extr.)mb, where the first error is statistical, the second accounts for all experimental systematic uncertainties and the last is related to uncertainties in the extrapolation to |t|→0. In addition, the slope of the elastic cross section at small |t| is determined to be B=19.73+/-0.14(stat.)+/-0.26(syst.) GeV<SUP>-2</SUP>.
-
Elsevier 2014 Physics letters: B Vol.737 No.-
A search for resonant WZ production in the @?ν@?<SUP>'</SUP>@?<SUP>'</SUP> (@?,@?<SUP>'</SUP>=e,μ) decay channel using 20.3 fb<SUP>-1</SUP> of s=8 TeVpp collision data collected by the ATLAS experiment at LHC is presented. No significant deviation from the Standard Model prediction is observed and upper limits on the production cross sections of WZ resonances from an extended gauge model W<SUP>'</SUP> and from a simplified model of heavy vector triplets are derived. A corresponding observed (expected) lower mass limit of 1.52 (1.49) TeV is derived for the W<SUP>'</SUP> at the 95% confidence level.
-
North-Holland Pub. Co 2015 Physics letters. Section B Vol.748 No.-
Measurements of the centrality and rapidity dependence of inclusive jet production in s<SUB>NN</SUB>=5.02 TeV proton-lead (p+Pb) collisions and the jet cross-section in s=2.76 TeV proton-proton collisions are presented. These quantities are measured in datasets corresponding to an integrated luminosity of 27.8 nb<SUP>-1</SUP> and 4.0 pb<SUP>-1</SUP>, respectively, recorded with the ATLAS detector at the Large Hadron Collider in 2013. The p+Pb collision centrality was characterised using the total transverse energy measured in the pseudorapidity interval -4.9<η←3.2 in the direction of the lead beam. Results are presented for the double-differential per-collision yields as a function of jet rapidity and transverse momentum (p<SUB>T</SUB>) for minimum-bias and centrality-selected p+Pb collisions, and are compared to the jet rate from the geometric expectation. The total jet yield in minimum-bias events is slightly enhanced above the expectation in a p<SUB>T</SUB>-dependent manner but is consistent with the expectation within uncertainties. The ratios of jet spectra from different centrality selections show a strong modification of jet production at all p<SUB>T</SUB> at forward rapidities and for large p<SUB>T</SUB> at mid-rapidity, which manifests as a suppression of the jet yield in central events and an enhancement in peripheral events. These effects imply that the factorisation between hard and soft processes is violated at an unexpected level in proton-nucleus collisions. Furthermore, the modifications at forward rapidities are found to be a function of the total jet energy only, implying that the violations may have a simple dependence on the hard parton-parton kinematics.
-
Search for heavy long-lived charged particles with the ATLAS detector in pp collisions at s=7 TeV
ATLAS Collaboration,Aad, G.,Abbott, B.,Abdallah, J.,Abdelalim, A.A.,Abdesselam, A.,Abdinov, O.,Abi, B.,Abolins, M.,Abramowicz, H.,Abreu, H.,Acerbi, E.,Acharya, B.S.,Adams, D.L.,Addy, T.N.,Adelman, J. North-Holland Pub. Co 2011 Physics letters: B Vol.703 No.4
A search for long-lived charged particles reaching the muon spectrometer is performed using a data sample of 37 pb<SUP>-1</SUP> from pp collisions at s=7 TeV collected by the ATLAS detector at the LHC in 2010. No excess is observed above the estimated background. Stable τ@? sleptons are excluded at 95% CL up to a mass of 136 GeV, in GMSB models with N<SUB>5</SUB>=3, m<SUB>messenger</SUB>=250 TeV, sign(μ)=1 and tanβ=5. Electroweak production of sleptons is excluded up to a mass of 110 GeV. Gluino R-hadrons in a generic interaction model are excluded up to masses of 530 GeV to 544 GeV depending on the fraction of R-hadrons produced as g@?-balls.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
