Measurement of associated Z plus charm production in proton-proton collisions at root s=8TeV
A study of the associated production of a Z boson and a charm quark jet (Z + c), and a comparison to production with a b quark jet (Z + b), in pp collisions at a centre-of-mass energy of 8 TeV are presented. The analysis uses a data sample corresponding to an integrated luminosity of 19.7 fb−1, co...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English English |
| Published: |
Springer Verlag
2018
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/70402/ http://irep.iium.edu.my/70402/1/70402_Measurement%20of%20associated%20Z%20%2B%20charm%20production_new.pdf http://irep.iium.edu.my/70402/7/70402_Measurement%20of%20associated%20Z%20plus%20charm%20production_wos.pdf |
| _version_ | 1848787283570851840 |
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| author | Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Ambrogi, Federico Asilar, Ece Md. Ali, Mohd. Adli |
| author_facet | Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Ambrogi, Federico Asilar, Ece Md. Ali, Mohd. Adli |
| author_sort | Sirunyan, A. M. |
| building | IIUM Repository |
| collection | Online Access |
| description | A study of the associated production of a Z boson
and a charm quark jet (Z + c), and a comparison to production with a b quark jet (Z + b), in pp collisions at a
centre-of-mass energy of 8 TeV are presented. The analysis uses a data sample corresponding to an integrated luminosity of 19.7 fb−1, collected with the CMS detector at the
CERN LHC. The Z boson candidates are identified through
their decays into pairs of electrons or muons. Jets originating from heavy flavour quarks are identified using semileptonic decays of c or b flavoured hadrons and hadronic decays
of charm hadrons. The measurements are performed in the
kinematic region with two leptons with p
T > 20 GeV,
|η| < 2.1, 71 < m < 111 GeV, and heavy flavour jets
with p
jet
T > 25 GeV and |ηjet| < 2.5. The Z + c production
cross section is measured to be σ (pp → Z + c + X)B(Z →
+−) = 8.8±0.5 (stat)±0.6 (syst) pb. The ratio of the Z+c
and Z+b production cross sections is measured to be σ (pp →
Z+c+X)/σ (pp → Z+b+X) = 2.0±0.2 (stat)±0.2 (syst).
The Z+c production cross section and the cross section ratio
are also measured as a function of the transverse momentum
of the Z boson and of the heavy flavour jet. The measurements
are compared with theoretical predictions. |
| first_indexed | 2025-11-14T17:22:28Z |
| format | Article |
| id | iium-70402 |
| institution | International Islamic University Malaysia |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-14T17:22:28Z |
| publishDate | 2018 |
| publisher | Springer Verlag |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | iium-704022019-07-15T01:31:27Z http://irep.iium.edu.my/70402/ Measurement of associated Z plus charm production in proton-proton collisions at root s=8TeV Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Ambrogi, Federico Asilar, Ece Md. Ali, Mohd. Adli Q Science (General) QC Physics A study of the associated production of a Z boson and a charm quark jet (Z + c), and a comparison to production with a b quark jet (Z + b), in pp collisions at a centre-of-mass energy of 8 TeV are presented. The analysis uses a data sample corresponding to an integrated luminosity of 19.7 fb−1, collected with the CMS detector at the CERN LHC. The Z boson candidates are identified through their decays into pairs of electrons or muons. Jets originating from heavy flavour quarks are identified using semileptonic decays of c or b flavoured hadrons and hadronic decays of charm hadrons. The measurements are performed in the kinematic region with two leptons with p T > 20 GeV, |η| < 2.1, 71 < m < 111 GeV, and heavy flavour jets with p jet T > 25 GeV and |ηjet| < 2.5. The Z + c production cross section is measured to be σ (pp → Z + c + X)B(Z → +−) = 8.8±0.5 (stat)±0.6 (syst) pb. The ratio of the Z+c and Z+b production cross sections is measured to be σ (pp → Z+c+X)/σ (pp → Z+b+X) = 2.0±0.2 (stat)±0.2 (syst). The Z+c production cross section and the cross section ratio are also measured as a function of the transverse momentum of the Z boson and of the heavy flavour jet. The measurements are compared with theoretical predictions. Springer Verlag 2018-04-09 Article PeerReviewed application/pdf en http://irep.iium.edu.my/70402/1/70402_Measurement%20of%20associated%20Z%20%2B%20charm%20production_new.pdf application/pdf en http://irep.iium.edu.my/70402/7/70402_Measurement%20of%20associated%20Z%20plus%20charm%20production_wos.pdf Sirunyan, A. M. and Tumasyan, A. R. and Adam, Wolfgang and Ambrogi, Federico and Asilar, Ece and Md. Ali, Mohd. Adli (2018) Measurement of associated Z plus charm production in proton-proton collisions at root s=8TeV. The European Physical Journal C, 78 (4). pp. 1-34. ISSN 1434-6044 E-ISSN 1434-6052 https://helda.helsinki.fi//bitstream/handle/10138/235488/10.1140_epjc_s10052_018_5752_x.pdf?sequence=1 10.1140/epjc/s10052-018-5752-x |
| spellingShingle | Q Science (General) QC Physics Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Ambrogi, Federico Asilar, Ece Md. Ali, Mohd. Adli Measurement of associated Z plus charm production in proton-proton collisions at root s=8TeV |
| title | Measurement of associated Z plus charm production in proton-proton collisions at root s=8TeV |
| title_full | Measurement of associated Z plus charm production in proton-proton collisions at root s=8TeV |
| title_fullStr | Measurement of associated Z plus charm production in proton-proton collisions at root s=8TeV |
| title_full_unstemmed | Measurement of associated Z plus charm production in proton-proton collisions at root s=8TeV |
| title_short | Measurement of associated Z plus charm production in proton-proton collisions at root s=8TeV |
| title_sort | measurement of associated z plus charm production in proton-proton collisions at root s=8tev |
| topic | Q Science (General) QC Physics |
| url | http://irep.iium.edu.my/70402/ http://irep.iium.edu.my/70402/ http://irep.iium.edu.my/70402/ http://irep.iium.edu.my/70402/1/70402_Measurement%20of%20associated%20Z%20%2B%20charm%20production_new.pdf http://irep.iium.edu.my/70402/7/70402_Measurement%20of%20associated%20Z%20plus%20charm%20production_wos.pdf |