Measurement of the D[superscript ±] production asymmetry in 7 TeV pp collisions
The asymmetry in the production cross-section σ of D [superscript ± ] mesons,A[subscript P] = σ(D[superscript +])-σ(D[superscript -])/σ(D[superscript +])+σ(D[superscript -]), is measured in bins of pseudorapidity η and transverse momentum p[subscript T] within the acceptance of the LHCb detector. T...
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Elsevier BV
2018
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| Online Access: | http://hdl.handle.net/1721.1/116439 https://orcid.org/0000-0001-8285-3346 |
| _version_ | 1811077834752393216 |
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| author | Williams, Michael |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Williams, Michael |
| author_sort | Williams, Michael |
| collection | MIT |
| description | The asymmetry in the production cross-section σ of D [superscript ± ] mesons,A[subscript P] = σ(D[superscript +])-σ(D[superscript -])/σ(D[superscript +])+σ(D[superscript -]), is measured in bins of pseudorapidity η and transverse momentum p[subscript T] within the acceptance of the LHCb detector. The result is obtained with a sample of D[superscript +] → K[superscript 0][subscript S]π[superscript +] decays corresponding to an integrated luminosity of 1.0 fb[superscript -1], collected in pp collisions at a centre of mass energy of 7 TeV at the Large Hadron Collider. When integrated over the kinematic range 2.0 < p [subscript T] < 18.0 GeV/c and 2.20 < η < 4.75, the production asymmetry is A [subscript P] =(-0.96±0.26±0.18)%. The uncertainties quoted are statistical and systematic, respectively. The result assumes that any direct CP violation in the D[superscript +]→K[subscript 0][subscript S]π[superscript +] decay is negligible. No significant dependence on η or p[subscript T] is observed. © 2012 CERN. |
| first_indexed | 2024-09-23T10:49:07Z |
| format | Article |
| id | mit-1721.1/116439 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T10:49:07Z |
| publishDate | 2018 |
| publisher | Elsevier BV |
| record_format | dspace |
| spelling | mit-1721.1/1164392022-09-30T23:14:44Z Measurement of the D[superscript ±] production asymmetry in 7 TeV pp collisions Williams, Michael Massachusetts Institute of Technology. Department of Physics Williams, Michael The asymmetry in the production cross-section σ of D [superscript ± ] mesons,A[subscript P] = σ(D[superscript +])-σ(D[superscript -])/σ(D[superscript +])+σ(D[superscript -]), is measured in bins of pseudorapidity η and transverse momentum p[subscript T] within the acceptance of the LHCb detector. The result is obtained with a sample of D[superscript +] → K[superscript 0][subscript S]π[superscript +] decays corresponding to an integrated luminosity of 1.0 fb[superscript -1], collected in pp collisions at a centre of mass energy of 7 TeV at the Large Hadron Collider. When integrated over the kinematic range 2.0 < p [subscript T] < 18.0 GeV/c and 2.20 < η < 4.75, the production asymmetry is A [subscript P] =(-0.96±0.26±0.18)%. The uncertainties quoted are statistical and systematic, respectively. The result assumes that any direct CP violation in the D[superscript +]→K[subscript 0][subscript S]π[superscript +] decay is negligible. No significant dependence on η or p[subscript T] is observed. © 2012 CERN. National Science Foundation (U.S.) 2018-06-19T19:47:01Z 2018-06-19T19:47:01Z 2013-01 2012-10 2018-05-18T18:33:06Z Article http://purl.org/eprint/type/JournalArticle 0370-2693 http://hdl.handle.net/1721.1/116439 Aaij, R., et al. “Measurement of the D[superscript ±] Production Asymmetry in 7 TeV Pp Collisions.” Physics Letters B, vol. 718, no. 3, Jan. 2013, pp. 902–09. © 2012 CERN https://orcid.org/0000-0001-8285-3346 http://dx.doi.org/10.1016/j.physletb.2012.11.038 Physics Letters B Attribution 3.0 Unported (CC BY 3.0) https://creativecommons.org/licenses/by/3.0/ application/pdf Elsevier BV Physics Letters B |
| spellingShingle | Williams, Michael Measurement of the D[superscript ±] production asymmetry in 7 TeV pp collisions |
| title | Measurement of the D[superscript ±] production asymmetry in 7 TeV pp collisions |
| title_full | Measurement of the D[superscript ±] production asymmetry in 7 TeV pp collisions |
| title_fullStr | Measurement of the D[superscript ±] production asymmetry in 7 TeV pp collisions |
| title_full_unstemmed | Measurement of the D[superscript ±] production asymmetry in 7 TeV pp collisions |
| title_short | Measurement of the D[superscript ±] production asymmetry in 7 TeV pp collisions |
| title_sort | measurement of the d superscript production asymmetry in 7 tev pp collisions |
| url | http://hdl.handle.net/1721.1/116439 https://orcid.org/0000-0001-8285-3346 |
| work_keys_str_mv | AT williamsmichael measurementofthedsuperscriptproductionasymmetryin7tevppcollisions |