Observation of X(3872) production in pp collisions at root s=7 TeV

R. Aaij; C. Abellan Beteta; B. Adeva; M. Adinolfi; C. Adrover; A. Affolder; Z. Ajaltouni; J. Albrecht; F. Alessio; M. Alexander; G. Alkhazov; P. Alvarez Cartelle; A. A. Alves; S. Amato; Y. Amhis; R. B. Appleby; O. Aquines Gutierrez; F. Archilli; L. Arrabito; A. Artamonov; M. Artuso; E. Aslanides; G. Auriemma; S. Bachmann; J. J. Back; D. S. Bailey; V. Balagura; W. Baldini; R. J. Barlow; C. Barschel; S. Barsuk; W. Barter; A. Bates; C. Bauer; Th. Bauer; I. Bediaga; S. Belogurov; K. Belous; I. Belyaev; E. Ben-Haim; M. Benayoun; G. Bencivenni; S. Benson; J. Benton; R. Bernet; M. -O. Bettler; M. van Beuzekom; A. Bien; S. Bifani; A. Pellegrino; LHCb Collaboration

doi:10.1140/epjc/s10052-012-1972-7

Observation of X(3872) production in pp collisions at root s=7 TeV

R. Aaij^*, C. Abellan Beteta, B. Adeva, M. Adinolfi, C. Adrover, A. Affolder, Z. Ajaltouni, J. Albrecht, F. Alessio, M. Alexander, G. Alkhazov, P. Alvarez Cartelle, A. A. Alves, S. Amato, Y. Amhis, R. B. Appleby, O. Aquines Gutierrez, F. Archilli, L. Arrabito, A. ArtamonovM. Artuso, E. Aslanides, G. Auriemma, S. Bachmann, J. J. Back, D. S. Bailey, V. Balagura, W. Baldini, R. J. Barlow, C. Barschel, S. Barsuk, W. Barter, A. Bates, C. Bauer, Th. Bauer, I. Bediaga, S. Belogurov, K. Belous, I. Belyaev, E. Ben-Haim, M. Benayoun, G. Bencivenni, S. Benson, J. Benton, R. Bernet, M. -O. Bettler, M. van Beuzekom, A. Bien, S. Bifani, A. Pellegrino, LHCb Collaboration

^*Corresponding author for this work

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Abstract

Using 34.7 pb(-1) of data collected with the LHCb detector, the inclusive production of the X(3872) meson in pp collisions at root s = 7 TeV is observed for the first time. Candidates are selected in the X(3872) -> J/psi pi(+)pi(-) decay mode, and used to measure

sigma(pp -> X(3872) + anything)beta(X(3872) -> J/psi pi(+)pi(-))

= 5.4 +/- 1.3 (stat)+/- 0.8 (syst) nb,

where sigma (pp -> X(3872) + anything) is the inclusive production cross section of X(3872) mesons with rapidity in the range 2.5-4.5 and transverse momentum in the range 5-20 GeV/c. In addition the masses of both the X(3872) and psi(2S) mesons, reconstructed in the J/psi pi(+)pi(-) final state, are measured to be

m(X(3872)) = 3871.95 +/- 0.48 (stat)+/- 0.12 (syst) MeV/c(2)

and

m(psi(2S)) = 3686.12 +/- 0.06 (stat)+/- 0.10 (syst) MeV/c(2).

Original language	English
Article number	1972
Number of pages	9
Journal	The European Physical Journal C
Volume	72
DOIs	https://doi.org/10.1140/epjc/s10052-012-1972-7
Publication status	Published - May-2012
Externally published	Yes

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Aaij, R., Abellan Beteta, C., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., Ajaltouni, Z., Albrecht, J., Alessio, F., Alexander, M., Alkhazov, G., Alvarez Cartelle, P., Alves, A. A., Amato, S., Amhis, Y., Appleby, R. B., Gutierrez, O. A., Archilli, F., Arrabito, L., ... LHCb Collaboration (2012). Observation of X(3872) production in pp collisions at root s=7 TeV. The European Physical Journal C, 72, Article 1972. https://doi.org/10.1140/epjc/s10052-012-1972-7

@article{6095e867cb404a1f956c52289b18f75c,

title = "Observation of X(3872) production in pp collisions at root s=7 TeV",

abstract = "Using 34.7 pb(-1) of data collected with the LHCb detector, the inclusive production of the X(3872) meson in pp collisions at root s = 7 TeV is observed for the first time. Candidates are selected in the X(3872) -> J/psi pi(+)pi(-) decay mode, and used to measuresigma(pp -> X(3872) + anything)beta(X(3872) -> J/psi pi(+)pi(-))= 5.4 +/- 1.3 (stat)+/- 0.8 (syst) nb,where sigma (pp -> X(3872) + anything) is the inclusive production cross section of X(3872) mesons with rapidity in the range 2.5-4.5 and transverse momentum in the range 5-20 GeV/c. In addition the masses of both the X(3872) and psi(2S) mesons, reconstructed in the J/psi pi(+)pi(-) final state, are measured to bem(X(3872)) = 3871.95 +/- 0.48 (stat)+/- 0.12 (syst) MeV/c(2)andm(psi(2S)) = 3686.12 +/- 0.06 (stat)+/- 0.10 (syst) MeV/c(2).",

author = "R. Aaij and {Abellan Beteta}, C. and B. Adeva and M. Adinolfi and C. Adrover and A. Affolder and Z. Ajaltouni and J. Albrecht and F. Alessio and M. Alexander and G. Alkhazov and {Alvarez Cartelle}, P. and Alves, {A. A.} and S. Amato and Y. Amhis and Appleby, {R. B.} and Gutierrez, {O. Aquines} and F. Archilli and L. Arrabito and A. Artamonov and M. Artuso and E. Aslanides and G. Auriemma and S. Bachmann and Back, {J. J.} and Bailey, {D. S.} and V. Balagura and W. Baldini and Barlow, {R. J.} and C. Barschel and S. Barsuk and W. Barter and A. Bates and C. Bauer and Th. Bauer and I. Bediaga and S. Belogurov and K. Belous and I. Belyaev and E. Ben-Haim and M. Benayoun and G. Bencivenni and S. Benson and J. Benton and R. Bernet and Bettler, {M. -O.} and {van Beuzekom}, M. and A. Bien and S. Bifani and A. Pellegrino and {LHCb Collaboration}",

year = "2012",

month = may,

doi = "10.1140/epjc/s10052-012-1972-7",

language = "English",

volume = "72",

journal = "The European Physical Journal C",

issn = "1434-6044",

publisher = "Springer",

}

Aaij, R, Abellan Beteta, C, Adeva, B, Adinolfi, M, Adrover, C, Affolder, A, Ajaltouni, Z, Albrecht, J, Alessio, F, Alexander, M, Alkhazov, G, Alvarez Cartelle, P, Alves, AA, Amato, S, Amhis, Y, Appleby, RB, Gutierrez, OA, Archilli, F, Arrabito, L, Artamonov, A, Artuso, M, Aslanides, E, Auriemma, G, Bachmann, S, Back, JJ, Bailey, DS, Balagura, V, Baldini, W, Barlow, RJ, Barschel, C, Barsuk, S, Barter, W, Bates, A, Bauer, C, Bauer, T, Bediaga, I, Belogurov, S, Belous, K, Belyaev, I, Ben-Haim, E, Benayoun, M, Bencivenni, G, Benson, S, Benton, J, Bernet, R, Bettler, M-O, van Beuzekom, M, Bien, A, Bifani, S, Pellegrino, A & LHCb Collaboration 2012, 'Observation of X(3872) production in pp collisions at root s=7 TeV', The European Physical Journal C, vol. 72, 1972. https://doi.org/10.1140/epjc/s10052-012-1972-7

TY - JOUR

T1 - Observation of X(3872) production in pp collisions at root s=7 TeV

AU - Aaij, R.

AU - Abellan Beteta, C.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Adrover, C.

AU - Affolder, A.

AU - Ajaltouni, Z.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Alkhazov, G.

AU - Alvarez Cartelle, P.

AU - Alves, A. A.

AU - Amato, S.

AU - Amhis, Y.

AU - Appleby, R. B.

AU - Gutierrez, O. Aquines

AU - Archilli, F.

AU - Arrabito, L.

AU - Artamonov, A.

AU - Artuso, M.

AU - Aslanides, E.

AU - Auriemma, G.

AU - Bachmann, S.

AU - Back, J. J.

AU - Bailey, D. S.

AU - Balagura, V.

AU - Baldini, W.

AU - Barlow, R. J.

AU - Barschel, C.

AU - Barsuk, S.

AU - Barter, W.

AU - Bates, A.

AU - Bauer, C.

AU - Bauer, Th.

AU - Bediaga, I.

AU - Belogurov, S.

AU - Belous, K.

AU - Belyaev, I.

AU - Ben-Haim, E.

AU - Benayoun, M.

AU - Bencivenni, G.

AU - Benson, S.

AU - Benton, J.

AU - Bernet, R.

AU - Bettler, M. -O.

AU - van Beuzekom, M.

AU - Bien, A.

AU - Bifani, S.

AU - Pellegrino, A.

AU - LHCb Collaboration

PY - 2012/5

Y1 - 2012/5

N2 - Using 34.7 pb(-1) of data collected with the LHCb detector, the inclusive production of the X(3872) meson in pp collisions at root s = 7 TeV is observed for the first time. Candidates are selected in the X(3872) -> J/psi pi(+)pi(-) decay mode, and used to measuresigma(pp -> X(3872) + anything)beta(X(3872) -> J/psi pi(+)pi(-))= 5.4 +/- 1.3 (stat)+/- 0.8 (syst) nb,where sigma (pp -> X(3872) + anything) is the inclusive production cross section of X(3872) mesons with rapidity in the range 2.5-4.5 and transverse momentum in the range 5-20 GeV/c. In addition the masses of both the X(3872) and psi(2S) mesons, reconstructed in the J/psi pi(+)pi(-) final state, are measured to bem(X(3872)) = 3871.95 +/- 0.48 (stat)+/- 0.12 (syst) MeV/c(2)andm(psi(2S)) = 3686.12 +/- 0.06 (stat)+/- 0.10 (syst) MeV/c(2).

AB - Using 34.7 pb(-1) of data collected with the LHCb detector, the inclusive production of the X(3872) meson in pp collisions at root s = 7 TeV is observed for the first time. Candidates are selected in the X(3872) -> J/psi pi(+)pi(-) decay mode, and used to measuresigma(pp -> X(3872) + anything)beta(X(3872) -> J/psi pi(+)pi(-))= 5.4 +/- 1.3 (stat)+/- 0.8 (syst) nb,where sigma (pp -> X(3872) + anything) is the inclusive production cross section of X(3872) mesons with rapidity in the range 2.5-4.5 and transverse momentum in the range 5-20 GeV/c. In addition the masses of both the X(3872) and psi(2S) mesons, reconstructed in the J/psi pi(+)pi(-) final state, are measured to bem(X(3872)) = 3871.95 +/- 0.48 (stat)+/- 0.12 (syst) MeV/c(2)andm(psi(2S)) = 3686.12 +/- 0.06 (stat)+/- 0.10 (syst) MeV/c(2).

U2 - 10.1140/epjc/s10052-012-1972-7

DO - 10.1140/epjc/s10052-012-1972-7

M3 - Letter

SN - 1434-6044

VL - 72

JO - The European Physical Journal C

JF - The European Physical Journal C

M1 - 1972

ER -

Observation of X(3872) production in pp collisions at root s=7 TeV

Abstract

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