Measurement of the production of charm jets tagged with D0 mesons in pp collisions at √s=7 TeV

The ALICE collaboration

doi:10.1007/JHEP08(2019)133

Measurement of the production of charm jets tagged with D⁰ mesons in pp collisions at √s=7 TeV

The ALICE collaboration

Relativistic Nuclear Physics

Research output: Contribution to journal › Article › peer-review

25 Scopus citations

Abstract

The production of charm jets in proton-proton collisions at a center-of-mass energy of s=7 TeV was measured with the ALICE detector at the CERN Large Hadron Collider. The measurement is based on a data sample corresponding to a total integrated luminosity of 6.23 nb⁻¹, collected using a minimum-bias trigger. Charm jets are identified by the presence of a D⁰ meson among their constituents. The D⁰ mesons are reconstructed from their hadronic decay D⁰ →K⁻π⁺. The D⁰-meson tagged jets are reconstructed using tracks of charged particles (track-based jets) with the anti-k_T algorithm in the jet transverse momentum range 5<pT,jetch< 30 GeV/c and pseudorapidity |η_jet| < 0.5. The fraction of charged jets containing a D⁰-meson increases with pT,jetch from 0.042 ± 0.004 (stat) ± 0.006 (syst) to 0.080 ± 0.009 (stat) ± 0.008 (syst). The distribution of D⁰-meson tagged jets as a function of the jet momentum fraction carried by the D⁰ meson in the direction of the jet axis (z∥ch) is reported for two ranges of jet transverse momenta, 5<pT,jetch< 15 GeV/c and 15<pT,jetch< 30 GeV/c in the intervals 0.2<z‖ch<1.0 and 0.4<z‖ch<1.0, respectively. The data are compared with results from Monte Carlo event generators (PYTHIA 6, PYTHIA 8 and Herwig 7) and with a Next-to-Leading-Order perturbative Quantum Chromodynamics calculation, obtained with the POWHEG method and interfaced with PYTHIA 6 for the generation of the parton shower, fragmentation, hadronisation and underlying event. [Figure not available: see fulltext.]

Original language	English
Article number	133
Journal	Journal of High Energy Physics
Volume	2019
Issue number	8
DOIs	https://doi.org/10.1007/JHEP08(2019)133
State	Published - Aug 1 2019

Funding

Funders	Funder number
Not added	ST/N00261X/1, ALICE, ST/M00340X/1, 1843572, ST/P004199/1
National Science Foundation	1719759
National Science Foundation
Science and Technology Facilities Council	ST/M00158X/1
Science and Technology Facilities Council

Keywords

Hadron-Hadron scattering (experiments)

Access to Document

10.1007/JHEP08(2019)133

Cite this

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title = "Measurement of the production of charm jets tagged with D0 mesons in pp collisions at √s=7 TeV",

abstract = "The production of charm jets in proton-proton collisions at a center-of-mass energy of s=7 TeV was measured with the ALICE detector at the CERN Large Hadron Collider. The measurement is based on a data sample corresponding to a total integrated luminosity of 6.23 nb−1, collected using a minimum-bias trigger. Charm jets are identified by the presence of a D0 meson among their constituents. The D0 mesons are reconstructed from their hadronic decay D0 →K−π+. The D0-meson tagged jets are reconstructed using tracks of charged particles (track-based jets) with the anti-kT algorithm in the jet transverse momentum range 5jet| < 0.5. The fraction of charged jets containing a D0-meson increases with pT,jetch from 0.042 ± 0.004 (stat) ± 0.006 (syst) to 0.080 ± 0.009 (stat) ± 0.008 (syst). The distribution of D0-meson tagged jets as a function of the jet momentum fraction carried by the D0 meson in the direction of the jet axis (z∥ch) is reported for two ranges of jet transverse momenta, 5",

keywords = "Hadron-Hadron scattering (experiments)",

author = "{The ALICE collaboration} and S. Acharya and D. Adamov{\'a} and Adhya, {S. P.} and A. Adler and J. Adolfsson and Aggarwal, {M. M.} and {Aglieri Rinella}, G. and M. Agnello and N. Agrawal and Z. Ahammed and S. Ahmad and Ahn, {S. U.} and S. Aiola and A. Akindinov and M. Al-Turany and Alam, {S. N.} and Albuquerque, {D. S.D.} and D. Aleksandrov and B. Alessandro and Alfanda, {H. M.} and {Alfaro Molina}, R. and B. Ali and Y. Ali and A. Alici and A. Alkin and J. Alme and T. Alt and L. Altenkamper and I. Altsybeev and Anaam, {M. N.} and C. Andrei and D. Andreou and Andrews, {H. A.} and A. Andronic and M. Angeletti and V. Anguelov and C. Anson and T. Anti{\v c}i{\'c} and F. Antinori and P. Antonioli and R. Anwar and N. Apadula and L. Aphecetche and H. Appelsh{\"a}user and S. Arcelli and R. Arnaldi and M. Arratia and F. Bock and Read, {K. F.} and Schmidt, {N. V.}",

note = "Publisher Copyright: {\textcopyright} 2019, The Author(s).",

year = "2019",

month = aug,

day = "1",

doi = "10.1007/JHEP08(2019)133",

language = "English",

volume = "2019",

journal = "Journal of High Energy Physics",

issn = "1126-6708",

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TY - JOUR

T1 - Measurement of the production of charm jets tagged with D0 mesons in pp collisions at √s=7 TeV

AU - The ALICE collaboration

AU - Acharya, S.

AU - Adamová, D.

AU - Adhya, S. P.

AU - Adler, A.

AU - Adolfsson, J.

AU - Aggarwal, M. M.

AU - Aglieri Rinella, G.

AU - Agnello, M.

AU - Agrawal, N.

AU - Ahammed, Z.

AU - Ahmad, S.

AU - Ahn, S. U.

AU - Aiola, S.

AU - Akindinov, A.

AU - Al-Turany, M.

AU - Alam, S. N.

AU - Albuquerque, D. S.D.

AU - Aleksandrov, D.

AU - Alessandro, B.

AU - Alfanda, H. M.

AU - Alfaro Molina, R.

AU - Ali, B.

AU - Ali, Y.

AU - Alici, A.

AU - Alkin, A.

AU - Alme, J.

AU - Alt, T.

AU - Altenkamper, L.

AU - Altsybeev, I.

AU - Anaam, M. N.

AU - Andrei, C.

AU - Andreou, D.

AU - Andrews, H. A.

AU - Andronic, A.

AU - Angeletti, M.

AU - Anguelov, V.

AU - Anson, C.

AU - Antičić, T.

AU - Antinori, F.

AU - Antonioli, P.

AU - Anwar, R.

AU - Apadula, N.

AU - Aphecetche, L.

AU - Appelshäuser, H.

AU - Arcelli, S.

AU - Arnaldi, R.

AU - Arratia, M.

AU - Bock, F.

AU - Read, K. F.

AU - Schmidt, N. V.

PY - 2019/8/1

Y1 - 2019/8/1

N2 - The production of charm jets in proton-proton collisions at a center-of-mass energy of s=7 TeV was measured with the ALICE detector at the CERN Large Hadron Collider. The measurement is based on a data sample corresponding to a total integrated luminosity of 6.23 nb−1, collected using a minimum-bias trigger. Charm jets are identified by the presence of a D0 meson among their constituents. The D0 mesons are reconstructed from their hadronic decay D0 →K−π+. The D0-meson tagged jets are reconstructed using tracks of charged particles (track-based jets) with the anti-kT algorithm in the jet transverse momentum range 5jet| < 0.5. The fraction of charged jets containing a D0-meson increases with pT,jetch from 0.042 ± 0.004 (stat) ± 0.006 (syst) to 0.080 ± 0.009 (stat) ± 0.008 (syst). The distribution of D0-meson tagged jets as a function of the jet momentum fraction carried by the D0 meson in the direction of the jet axis (z∥ch) is reported for two ranges of jet transverse momenta, 5

AB - The production of charm jets in proton-proton collisions at a center-of-mass energy of s=7 TeV was measured with the ALICE detector at the CERN Large Hadron Collider. The measurement is based on a data sample corresponding to a total integrated luminosity of 6.23 nb−1, collected using a minimum-bias trigger. Charm jets are identified by the presence of a D0 meson among their constituents. The D0 mesons are reconstructed from their hadronic decay D0 →K−π+. The D0-meson tagged jets are reconstructed using tracks of charged particles (track-based jets) with the anti-kT algorithm in the jet transverse momentum range 5jet| < 0.5. The fraction of charged jets containing a D0-meson increases with pT,jetch from 0.042 ± 0.004 (stat) ± 0.006 (syst) to 0.080 ± 0.009 (stat) ± 0.008 (syst). The distribution of D0-meson tagged jets as a function of the jet momentum fraction carried by the D0 meson in the direction of the jet axis (z∥ch) is reported for two ranges of jet transverse momenta, 5

KW - Hadron-Hadron scattering (experiments)

UR - http://www.scopus.com/inward/record.url?scp=85071973004&partnerID=8YFLogxK

U2 - 10.1007/JHEP08(2019)133

DO - 10.1007/JHEP08(2019)133

M3 - Article

AN - SCOPUS:85071973004

SN - 1126-6708

VL - 2019

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 8

M1 - 133

ER -