Study of charm hadronization with prompt Λ+c baryons in proton-proton and lead-lead collisions at √𝑠NN = 5.02 TeV
The production of prompt Λ c + $$ {\Lambda}_{\textrm{c}}^{+} $$ baryons...
| Main Authors: | , , , , , , , , , , , , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
Springer Berlin Heidelberg
2024
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| Online Access: | https://hdl.handle.net/1721.1/153430 |
| _version_ | 1811098036076544000 |
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| author | Tumasyan, A. Adam, W. Andrejkovic, J. W. Bergauer, T. Chatterjee, S. Damanakis, K. Dragicevic, M. Escalante Del Valle, A. Hussain, P. S. Jeitler, M. Krammer, N. Lechner, L. Liko, D. Mikulec, I. Paulitsch, P. Schieck, J. Schöfbeck, R. |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Tumasyan, A. Adam, W. Andrejkovic, J. W. Bergauer, T. Chatterjee, S. Damanakis, K. Dragicevic, M. Escalante Del Valle, A. Hussain, P. S. Jeitler, M. Krammer, N. Lechner, L. Liko, D. Mikulec, I. Paulitsch, P. Schieck, J. Schöfbeck, R. |
| author_sort | Tumasyan, A. |
| collection | MIT |
| description | The production of prompt
Λ
c
+
$$ {\Lambda}_{\textrm{c}}^{+} $$
baryons is measured via the exclusive decay channel
Λ
c
+
→
p
K
−
π
+
$$ {\Lambda}_{\textrm{c}}^{+}\to p{\textrm{K}}^{-}{\pi}^{+} $$
at a center-of-mass energy per nucleon pair of 5.02 TeV, using proton-proton (pp) and lead-lead (PbPb) collision data collected by the CMS experiment at the CERN LHC. The pp and PbPb data were obtained in 2017 and 2018 with integrated luminosities of 252 and 0.607 nb−1, respectively. The measurements are performed within the
Λ
c
+
$$ {\Lambda}_{\textrm{c}}^{+} $$
rapidity interval |y| < 1 with transverse momentum (pT) ranges of 3–30 and 6–40 GeV/c for pp and PbPb collisions, respectively. Compared to the yields in pp collisions scaled by the expected number of nucleon-nucleon interactions, the observed yields of
Λ
c
+
$$ {\Lambda}_{\textrm{c}}^{+} $$
with pT > 10 GeV/c are strongly suppressed in PbPb collisions. The level of suppression depends significantly on the collision centrality. The
Λ
c
+
$$ {\Lambda}_{\textrm{c}}^{+} $$
/D0 production ratio is similar in PbPb and pp collisions at pT > 10 GeV/c, suggesting that the coalescence process does not play a dominant role in prompt
Λ
c
+
$$ {\Lambda}_{\textrm{c}}^{+} $$
baryon production at higher pT. |
| first_indexed | 2024-09-23T17:08:57Z |
| format | Article |
| id | mit-1721.1/153430 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T17:08:57Z |
| publishDate | 2024 |
| publisher | Springer Berlin Heidelberg |
| record_format | dspace |
| spelling | mit-1721.1/1534302024-09-16T04:14:17Z Study of charm hadronization with prompt Λ+c baryons in proton-proton and lead-lead collisions at √𝑠NN = 5.02 TeV Tumasyan, A. Adam, W. Andrejkovic, J. W. Bergauer, T. Chatterjee, S. Damanakis, K. Dragicevic, M. Escalante Del Valle, A. Hussain, P. S. Jeitler, M. Krammer, N. Lechner, L. Liko, D. Mikulec, I. Paulitsch, P. Schieck, J. Schöfbeck, R. Massachusetts Institute of Technology. Department of Physics The production of prompt Λ c + $$ {\Lambda}_{\textrm{c}}^{+} $$ baryons is measured via the exclusive decay channel Λ c + → p K − π + $$ {\Lambda}_{\textrm{c}}^{+}\to p{\textrm{K}}^{-}{\pi}^{+} $$ at a center-of-mass energy per nucleon pair of 5.02 TeV, using proton-proton (pp) and lead-lead (PbPb) collision data collected by the CMS experiment at the CERN LHC. The pp and PbPb data were obtained in 2017 and 2018 with integrated luminosities of 252 and 0.607 nb−1, respectively. The measurements are performed within the Λ c + $$ {\Lambda}_{\textrm{c}}^{+} $$ rapidity interval |y| < 1 with transverse momentum (pT) ranges of 3–30 and 6–40 GeV/c for pp and PbPb collisions, respectively. Compared to the yields in pp collisions scaled by the expected number of nucleon-nucleon interactions, the observed yields of Λ c + $$ {\Lambda}_{\textrm{c}}^{+} $$ with pT > 10 GeV/c are strongly suppressed in PbPb collisions. The level of suppression depends significantly on the collision centrality. The Λ c + $$ {\Lambda}_{\textrm{c}}^{+} $$ /D0 production ratio is similar in PbPb and pp collisions at pT > 10 GeV/c, suggesting that the coalescence process does not play a dominant role in prompt Λ c + $$ {\Lambda}_{\textrm{c}}^{+} $$ baryon production at higher pT. 2024-01-31T16:08:47Z 2024-01-31T16:08:47Z 2024-01-23 2024-01-28T04:22:24Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/153430 Journal of High Energy Physics. 2024 Jan 23;2024(1):128 PUBLISHER_CC en https://doi.org/10.1007/JHEP01(2024)128 Creative Commons Attribution https://creativecommons.org/licenses/by/4.0/ The Author(s) application/pdf Springer Berlin Heidelberg Springer Berlin Heidelberg |
| spellingShingle | Tumasyan, A. Adam, W. Andrejkovic, J. W. Bergauer, T. Chatterjee, S. Damanakis, K. Dragicevic, M. Escalante Del Valle, A. Hussain, P. S. Jeitler, M. Krammer, N. Lechner, L. Liko, D. Mikulec, I. Paulitsch, P. Schieck, J. Schöfbeck, R. Study of charm hadronization with prompt Λ+c baryons in proton-proton and lead-lead collisions at √𝑠NN = 5.02 TeV |
| title | Study of charm hadronization with prompt Λ+c baryons in proton-proton and lead-lead collisions at √𝑠NN = 5.02 TeV |
| title_full | Study of charm hadronization with prompt Λ+c baryons in proton-proton and lead-lead collisions at √𝑠NN = 5.02 TeV |
| title_fullStr | Study of charm hadronization with prompt Λ+c baryons in proton-proton and lead-lead collisions at √𝑠NN = 5.02 TeV |
| title_full_unstemmed | Study of charm hadronization with prompt Λ+c baryons in proton-proton and lead-lead collisions at √𝑠NN = 5.02 TeV |
| title_short | Study of charm hadronization with prompt Λ+c baryons in proton-proton and lead-lead collisions at √𝑠NN = 5.02 TeV |
| title_sort | study of charm hadronization with prompt λ c baryons in proton proton and lead lead collisions at √𝑠nn 5 02 tev |
| url | https://hdl.handle.net/1721.1/153430 |
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