Study of Z production in PbPb and pp collisions at (Formula presented.) TeV in the dimuon and dielectron decay channels

Name: Study of Z production in PbPb and pp collisions at (Formula presented.) TeV in the dimuon and dielectron decay channels
Author: Chatrchyan, S., Işıldak, Bora

İsim	Study of Z production in PbPb and pp collisions at (Formula presented.) TeV in the dimuon and dielectron decay channels
Yazar	Chatrchyan, S., Işıldak, Bora
Basım Tarihi:	2015-03
Basım Yeri	- Springer International Publishing
Tür	Süreli Yayın
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	1029-8479
Kayıt Numarası	29d5b4b0-6fa0-4458-9cbe-af86ae28f236
Lokasyon	Natural and Mathematical Sciences
Tarih	2015-03
Örnek Metin	The production of Z bosons is studied in the dimuon and dielectron decay channels in PbPb and pp collisions at sNN−−−−√=2.76sNN=2.76 TeV, using data collected by the CMS experiment at the LHC. The PbPb data sample corresponds to an integrated luminosity of about 166 μb−1, while the pp data sample collected in 2013 at the same nucleon-nucleon centre-of-mass energy has an integrated luminosity of 5.4 pb−1. The Z boson yield is measured as a function of rapidity, transverse momentum, and collision centrality. The ratio of PbPb to pp yields, scaled by the number of inelastic nucleon-nucleon collisions, is found to be 1.06 ± 0.05 (stat) ± 0.08 (syst) in the dimuon channel and 1.02 ± 0.08 (stat) ± 0.15 (syst) in the dielectron channel, for centrality-integrated Z boson production. This binary collision scaling is seen to hold in the entire kinematic region studied, as expected for a colourless probe that is unaffected by the hot and dense QCD medium produced in heavy ion collisions.
DOI	10.1007/JHEP03(2015)022

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Study of Z production in PbPb and pp collisions at (Formula presented.) TeV in the dimuon and dielectron decay channels

Yazar Chatrchyan, S., Işıldak, Bora

Basım Tarihi 2015-03

Basım Yeri - Springer International Publishing

Tür Süreli Yayın

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 1029-8479

Kayıt Numarası 29d5b4b0-6fa0-4458-9cbe-af86ae28f236

Lokasyon Natural and Mathematical Sciences

Tarih 2015-03

Örnek Metin The production of Z bosons is studied in the dimuon and dielectron decay channels in PbPb and pp collisions at sNN−−−−√=2.76sNN=2.76 TeV, using data collected by the CMS experiment at the LHC. The PbPb data sample corresponds to an integrated luminosity of about 166 μb−1, while the pp data sample collected in 2013 at the same nucleon-nucleon centre-of-mass energy has an integrated luminosity of 5.4 pb−1. The Z boson yield is measured as a function of rapidity, transverse momentum, and collision centrality. The ratio of PbPb to pp yields, scaled by the number of inelastic nucleon-nucleon collisions, is found to be 1.06 ± 0.05 (stat) ± 0.08 (syst) in the dimuon channel and 1.02 ± 0.08 (stat) ± 0.15 (syst) in the dielectron channel, for centrality-integrated Z boson production. This binary collision scaling is seen to hold in the entire kinematic region studied, as expected for a colourless probe that is unaffected by the hot and dense QCD medium produced in heavy ion collisions.

DOI 10.1007/JHEP03(2015)022