کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8184147 | 1527113 | 2013 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Measurement of high pT isolated prompt photons in lead-lead collisions at sNN=2.76TeV with the ATLAS detector at the LHC
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Measurement of high pT isolated prompt photons in lead-lead collisions at sNN=2.76TeV with the ATLAS detector at the LHC Measurement of high pT isolated prompt photons in lead-lead collisions at sNN=2.76TeV with the ATLAS detector at the LHC](/preview/png/8184147.png)
چکیده انگلیسی
Prompt photons are a powerful tool to study heavy ion collisions. Their production rates provide access to the initial state parton distribution functions and also provide a means to calibrate the expected energy of the recoil jet. The ATLAS detector measures photons with its hermetic, longitudinally segmented calorimeter, which gives excellent spatial and energy resolutions, and detailed information about the shower shape of each measured photon. This provides significant rejection against the expected background from the decays of neutral pions in jets. Rejection against jet fragmentation products is further enhanced by requiring candidate photons to be isolated. First results on the spectra of isolated prompt photons from a dataset with an integrated luminosity of approximately 0.13nbâ1 of lead-lead collisions at sNN=2.76TeV are shown as a function of transverse momentum and centrality. The measured spectra are compared to expectations from perturbative QCD calculations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Physics A - Volumes 910â911, August 2013, Pages 371-375
Journal: Nuclear Physics A - Volumes 910â911, August 2013, Pages 371-375
نویسندگان
Peter Steinberg,