Measurement of the prompt J /[Formula: see text] pair production cross-section in pp collisions at [Formula: see text] TeV with the ATLAS detector

Measurement of the prompt J /[Formula: see text] pair production cross-section in pp collisions at [Formula: see text] TeV with the ATLAS detector

The production of two prompt [Formula: see text] mesons, each with transverse momenta [Formula: see text] GeV and rapidity [Formula: see text], is studied using a sample of proton-proton collisions at [Formula: see text] TeV, corresponding to an integrated luminosity of 11.4 fb[Formula: see text] co...

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Veröffentlicht in:The European physical journal. C, Particles and fields Particles and fields, 2017-02, Vol.77 (2), p.76-76
Hauptverfasser: Aaboud, M, Aad, G, Abbott, B, Abdallah, J, Abdinov, O, Abeloos, B, Aben, R, AbouZeid, O S, Abraham, N L, Abramowicz, H, Abreu, H, Abreu, R, Abulaiti, Y, Acharya, B S, Adachi, S, Adamczyk, L, Adams, D L, Adelman, J, Adomeit, S, Adye, T, Affolder, A A, Agatonovic-Jovin, T, Aguilar-Saavedra, J A, Ahlen, S P, Ahmadov, F, Aielli, G, Akerstedt, H, Åkesson, T P A, Akimov, A V, Alberghi, G L, Albert, J, Albrand, S, Alconada Verzini, M J, Aleksa, M, Aleksandrov, I N, Alexa, C, Alexander, G, Alexopoulos, T, Alhroob, M, Ali, B, Aliev, M, Alimonti, G, Alison, J, Alkire, S P, Allbrooke, B M M, Allen, B W, Allport, P P, Aloisio, A, Alonso, A, Alonso, F, Alpigiani, C, Alshehri, A A, Alstaty, M, Alvarez Gonzalez, B, Álvarez Piqueras, D, Alviggi, M G, Amadio, B T, Amaral Coutinho, Y, Amelung, C, Amidei, D, Amor Dos Santos, S P, Amorim, A, Amoroso, S, Amundsen, G, Anastopoulos, C, Ancu, L S, Andari, N, Andeen, T, Anders, C F, Anders, G, Anders, J K, Anderson, K J, Andreazza, A, Andrei, V, Angelidakis, S, Angelozzi, I, Angerami, A, Anghinolfi, F, Anisenkov, A V, Anjos, N, Annovi, A, Antel, C, Antonelli, M, Antonov, A, Antrim, D J, Anulli, F, Aoki, M, Aperio Bella, L, Arabidze, G, Arai, Y, Araque, J P, Arce, A T H, Arduh, F A, Arguin, J-F, Argyropoulos, S, Arik, M, Armbruster, A J, Armitage, L J, Arnaez, O, Arnold, H
Format: Artikel
Sprache:eng
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Detection equipment
Measurement
Particle collisions
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Zusammenfassung:The production of two prompt [Formula: see text] mesons, each with transverse momenta [Formula: see text] GeV and rapidity [Formula: see text], is studied using a sample of proton-proton collisions at [Formula: see text] TeV, corresponding to an integrated luminosity of 11.4 fb[Formula: see text] collected in 2012 with the ATLAS detector at the LHC. The differential cross-section, assuming unpolarised [Formula: see text] production, is measured as a function of the transverse momentum of the lower-[Formula: see text] [Formula: see text] meson, di-[Formula: see text] [Formula: see text] and mass, the difference in rapidity between the two [Formula: see text] mesons, and the azimuthal angle between the two [Formula: see text] mesons. The fraction of prompt pair events due to double parton scattering is determined by studying kinematic correlations between the two [Formula: see text] mesons. The total and double parton scattering cross-sections are compared with predictions. The effective cross-section of double parton scattering is measured to be [Formula: see text] mb.
ISSN:1434-6044
1434-6052
DOI:10.1140/epjc/s10052-017-4644-9