Measurement of the X(3872) production cross section via decays to J/ψπ+π− in pp collisions at √s = 7 TeV

S. Chatrchyan; V. Khachatryan; A. M. Sirunyan; A. Tumasyan; W. Adam; E. Aguilo; T. Bergauer; M. Dragicevic; J. Erö; C. Fabjan; M. Friedl; R. Frühwirth; V. M. Ghete; N. Hörmann; J. Hrubec; M. Jeitler; W. Kiesenhofer; V. Knünz; M. Krammer; I. Krätschmer; D. Liko; I. Mikulec; M. Pernicka; D. Rabady; B. Rahbaran; C. Rohringer; H. Rohringer; R. Schöfbeck; J. Strauss; A. Taurok; W. Waltenberger; C. E. Wulz; V. Mossolov; N. Shumeiko; J. Suarez Gonzalez; M. Bansal; S. Bansal; T. Cornelis; E. A. De Wolf; X. Janssen; S. Luyckx; L. Mucibello; S. Ochesanu; B. Roland; R. Rougny; M. Selvaggi; H. Van Haevermaet; P. Van Mechelen; N. Van Remortel; A. Radi; The CMS collaboration

doi:10.1007/JHEP04(2013)154

Measurement of the X(3872) production cross section via decays to J/ψπ⁺π⁻ in pp collisions at √s = 7 TeV

S. Chatrchyan, V. Khachatryan, A. M. Sirunyan, A. Tumasyan, W. Adam, E. Aguilo, T. Bergauer, M. Dragicevic, J. Erö, C. Fabjan, M. Friedl, R. Frühwirth, V. M. Ghete, N. Hörmann, J. Hrubec, M. Jeitler, W. Kiesenhofer, V. Knünz, M. Krammer, I. KrätschmerD. Liko, I. Mikulec, M. Pernicka, D. Rabady, B. Rahbaran, C. Rohringer, H. Rohringer, R. Schöfbeck, J. Strauss, A. Taurok, W. Waltenberger, C. E. Wulz, V. Mossolov, N. Shumeiko, J. Suarez Gonzalez, M. Bansal, S. Bansal, T. Cornelis, E. A. De Wolf, X. Janssen, S. Luyckx, L. Mucibello, S. Ochesanu, B. Roland, R. Rougny, M. Selvaggi, H. Van Haevermaet, P. Van Mechelen, N. Van Remortel, A. Radi, The CMS collaboration

Physics

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Abstract

The production of the X(3872) is studied in pp collisions at √s = 7TeV, using decays to J/ψπ⁺π⁻, where the J/ψ decays to two muons. The data were recorded by the CMS experiment and correspond to an integrated luminosity of 4.8fb⁻¹. The measurements are performed in a kinematic range in which the X(3872) candidates have a transverse momentum 10 < pT < 50GeV and rapidity |y| < 1.2. The ratio of the X(3872) and ψ (2S) cross sections times their branching fractions into J/ψπ⁺π⁻ is measured as a function of pT. In addition, the fraction of X(3872) originating from B decays is determined. From these measurements the prompt X(3872) differential cross section times branching fraction as a function of pT is extracted. The π⁺π⁻ mass spectrum of the J/ψπ⁺π⁻ system in the X(3872) decays is also investigated.

Original language	English
Article number	154
Journal	Journal of High Energy Physics
Volume	2013
Issue number	4
DOIs	https://doi.org/10.1007/JHEP04(2013)154
Publication status	Published - Apr 29 2013

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Keywords

Hadron-Hadron Scattering

ASJC Scopus subject areas

Nuclear and High Energy Physics

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Chatrchyan, S., Khachatryan, V., Sirunyan, A. M., Tumasyan, A., Adam, W., Aguilo, E., ... The CMS collaboration (2013). Measurement of the X(3872) production cross section via decays to J/ψπ⁺π⁻ in pp collisions at √s = 7 TeV . Journal of High Energy Physics, 2013(4), [154]. https://doi.org/10.1007/JHEP04(2013)154

Measurement of the X(3872) production cross section via decays to J/ψπ⁺π⁻ in pp collisions at √s = 7 TeV . / Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Aguilo, E.; Bergauer, T.; Dragicevic, M.; Erö, J.; Fabjan, C.; Friedl, M.; Frühwirth, R.; Ghete, V. M.; Hörmann, N.; Hrubec, J.; Jeitler, M.; Kiesenhofer, W.; Knünz, V.; Krammer, M.; Krätschmer, I.; Liko, D.; Mikulec, I.; Pernicka, M.; Rabady, D.; Rahbaran, B.; Rohringer, C.; Rohringer, H.; Schöfbeck, R.; Strauss, J.; Taurok, A.; Waltenberger, W.; Wulz, C. E.; Mossolov, V.; Shumeiko, N.; Suarez Gonzalez, J.; Bansal, M.; Bansal, S.; Cornelis, T.; De Wolf, E. A.; Janssen, X.; Luyckx, S.; Mucibello, L.; Ochesanu, S.; Roland, B.; Rougny, R.; Selvaggi, M.; Van Haevermaet, H.; Van Mechelen, P.; Van Remortel, N.; Radi, A.; The CMS collaboration.

In: Journal of High Energy Physics, Vol. 2013, No. 4, 154, 29.04.2013.

Research output: Contribution to journal › Article

Chatrchyan, S, Khachatryan, V, Sirunyan, AM, Tumasyan, A, Adam, W, Aguilo, E, Bergauer, T, Dragicevic, M, Erö, J, Fabjan, C, Friedl, M, Frühwirth, R, Ghete, VM, Hörmann, N, Hrubec, J, Jeitler, M, Kiesenhofer, W, Knünz, V, Krammer, M, Krätschmer, I, Liko, D, Mikulec, I, Pernicka, M, Rabady, D, Rahbaran, B, Rohringer, C, Rohringer, H, Schöfbeck, R, Strauss, J, Taurok, A, Waltenberger, W, Wulz, CE, Mossolov, V, Shumeiko, N, Suarez Gonzalez, J, Bansal, M, Bansal, S, Cornelis, T, De Wolf, EA, Janssen, X, Luyckx, S, Mucibello, L, Ochesanu, S, Roland, B, Rougny, R, Selvaggi, M, Van Haevermaet, H, Van Mechelen, P, Van Remortel, N, Radi, A & The CMS collaboration 2013, 'Measurement of the X(3872) production cross section via decays to J/ψπ⁺π⁻ in pp collisions at √s = 7 TeV ', Journal of High Energy Physics, vol. 2013, no. 4, 154. https://doi.org/10.1007/JHEP04(2013)154

Chatrchyan, S. ; Khachatryan, V. ; Sirunyan, A. M. ; Tumasyan, A. ; Adam, W. ; Aguilo, E. ; Bergauer, T. ; Dragicevic, M. ; Erö, J. ; Fabjan, C. ; Friedl, M. ; Frühwirth, R. ; Ghete, V. M. ; Hörmann, N. ; Hrubec, J. ; Jeitler, M. ; Kiesenhofer, W. ; Knünz, V. ; Krammer, M. ; Krätschmer, I. ; Liko, D. ; Mikulec, I. ; Pernicka, M. ; Rabady, D. ; Rahbaran, B. ; Rohringer, C. ; Rohringer, H. ; Schöfbeck, R. ; Strauss, J. ; Taurok, A. ; Waltenberger, W. ; Wulz, C. E. ; Mossolov, V. ; Shumeiko, N. ; Suarez Gonzalez, J. ; Bansal, M. ; Bansal, S. ; Cornelis, T. ; De Wolf, E. A. ; Janssen, X. ; Luyckx, S. ; Mucibello, L. ; Ochesanu, S. ; Roland, B. ; Rougny, R. ; Selvaggi, M. ; Van Haevermaet, H. ; Van Mechelen, P. ; Van Remortel, N. ; Radi, A. ; The CMS collaboration. / Measurement of the X(3872) production cross section via decays to J/ψπ⁺π⁻ in pp collisions at √s = 7 TeV . In: Journal of High Energy Physics. 2013 ; Vol. 2013, No. 4.

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abstract = "The production of the X(3872) is studied in pp collisions at √s = 7TeV, using decays to J/ψπ+π−, where the J/ψ decays to two muons. The data were recorded by the CMS experiment and correspond to an integrated luminosity of 4.8fb−1. The measurements are performed in a kinematic range in which the X(3872) candidates have a transverse momentum 10 < pT < 50GeV and rapidity |y| < 1.2. The ratio of the X(3872) and ψ (2S) cross sections times their branching fractions into J/ψπ+π− is measured as a function of pT. In addition, the fraction of X(3872) originating from B decays is determined. From these measurements the prompt X(3872) differential cross section times branching fraction as a function of pT is extracted. The π+π− mass spectrum of the J/ψπ+π− system in the X(3872) decays is also investigated.",

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AU - Sirunyan, A. M.

AU - Tumasyan, A.

AU - Adam, W.

AU - Aguilo, E.

AU - Bergauer, T.

AU - Dragicevic, M.

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AU - Rabady, D.

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AU - Schöfbeck, R.

AU - Strauss, J.

AU - Taurok, A.

AU - Waltenberger, W.

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10.1007/JHEP04(2013)154