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Transverse-momentum and pseudorapidity distributions of charged hadrons in pp collisions at vs = 0.9 and 2.36TeV

Abstract: Measurements of inclusive charged-hadron transverse-momentum and pseudorapidity distributions are presented for proton-proton collisions at s?=0.9?=0.9 and 2.36 TeV. The data were collected with the CMS detector during the LHC commissioning in December 2009. For non-single-diffractive interactions, the average charged-hadron transverse momentum is measured to be 0.46 ± 0.01 (stat.) ± 0.01 (syst.) GeV/c at 0.9 TeV and 0.50 ± 0.01 (stat.) ± 0.01 (syst.) GeV/c at 2.36 TeV, for pseudorapidities between --2.4 and +2.4. At these energies, the measured pseudorapidity densities in the central region, dN ch/d?||?|<0.5, are 3:48 ± 0:02 (stat.) ± 0.13 (syst.) and 4:47 ± 0:04 (stat.) ± 0.16 (syst.), respectively. The results at 0.9 TeV are in agreement with previous measurements and confirm the expectation of near equal hadron production in p¯¯¯p?¯? and pp collisions. The results at 2.36 TeV represent the highest-energy measurements at a particle collider to date.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 Autoría: Khachatryan V., Sirunyan A.M., Tumasyan A., Adam W., Bergauer T., Dragicevic M., Erö J., Friedl M., Frühwirth R., Ghete V.M., Hammer J., Hänsel S., Hoch M., Hörmann N., Hrubec J., Jeitler M., Kasieczka G., Krammer M., Liko D., Mikulec I., Pernicka M., Rohringer H., Schöfbeck R., Strauss J., Taurok A., Teischinger F., Waltenberger W., Walzel G., Widl E., Wulz C.E., Mossolov V., Shumeiko N., Suarez Gonzalez J., Benucci L., De Wolf

 Fuente: Journal of High Energy Physics, 2010, 2010(2), 41

Editorial: Springer Verlag

 Fecha de publicación: 01/02/2010

Nº de páginas: 35

Tipo de publicación: Artículo de Revista

 DOI: 10.1007/JHEP02(2010)041

ISSN: 1126-6708,1029-8479

Url de la publicación: https://doi.org/10.1007/JHEP02(2010)041

Autoría

SHANHUEI CHUANG

IRMA DIAZ MERINO

CARLOS DIEZ GONZALEZ

MARCOS FERNANDEZ GARCIA

REBECA GONZALEZ SUAREZ

CLARA JORDA LOPE

PATRICIA LOBELLE PARDO

MARIA AMPARO LOPEZ VIRTO

RAFAEL JOSE MARCO DE LUCAS

MARIA DEL MAR SOBRON SAÑUDO

KHACHATRYAN, V.