Production of ω mesons in pp collisions at s=7 TeV

Citations

WEB OF SCIENCE

8
Citations

SCOPUS

10

초록

The invariant differential cross section of inclusive omega (782) meson production at midrapidity (|y|<0.5) in pp collisions at s=7 TeV was measured with the ALICE detector at the LHC over a transverse momentum range of 2<pT<17 GeV/c. The omega meson was reconstructed via its omega -> pi+pi-pi 0 decay channel. The measured omega production cross section is compared to various calculations: PYTHIA 8.2 Monash 2013 describes the data, while PYTHIA 8.2 Tune 4C overestimates the data by about 50%. A recent NLO calculation, which includes a model describing the fragmentation of the whole vector-meson nonet, describes the data within uncertainties below 6 GeV/c, while it overestimates the data by up to 50% for higher pT. The omega/pi 0 ratio is in agreement with previous measurements at lower collision energies and the PYTHIA calculations. In addition, the measurement is compatible with transverse mass scaling within the measured pT range and the ratio is constant with C omega/pi 0=0.67 +/- 0.03(stat) +/- 0.04(sys) above a transverse momentum of 2.5 GeV/c.

키워드

PROTON-PROTON COLLISIONSNEUTRAL PIONETAPI(0)DECAY
제목
Production of ω mesons in pp collisions at s=7 TeV
저자
Acharya, S.Adamova, D.Adler, A.Adolfsson, J.Aggarwal, M. M.Rinella, G. AglieriAgnello, M.Agrawal, N.Ahammed, Z.Ahmad, S.Ahn, S. U.Akindinov, A.Al-Turany, M.Alam, S. N.Albuquerque, D. S. D.Aleksandrov, D.Alessandro, B.Alfanda, H. M.Alfaro Molina, R.Ali, B.Ali, Y.Alici, A.Alkin, A.Alme, J.Alt, T.Altenkamper, L.Altsybeev, I.Anaam, M. N.Andrei, C.Andreou, D.Andrews, H. A.Andronic, A.Angeletti, M.Anguelov, V.Anson, C.Anticic, T.Antinori, F.Antonioli, P.Anwar, R.Apadula, N.Aphecetche, L.Appelshaeuser, H.Arcelli, S.Arnaldi, R.Arratia, M.Arsene, I. C.Arslandok, M.Augustinus, A.Averbeck, R.Aziz, S.Azmi, M. D.Badala, A.Baek, Y. W.Bagnasco, S.Bai, X.Bailhache, R.Bala, R.Baldisseri, A.Ball, M.Balouza, S.Barbera, R.Barioglio, L.Barnafoldi, G. G.Barnby, L. S.Barret, V.Bartalini, P.Barth, K.Bartsch, E.Baruffaldi, F.Bastid, N.Basu, S.Batigne, G.Batyunya, B.Bauri, D.Bazo Alba, J. L.Bearden, I. G.Bedda, C.Behera, N. K.Belikov, I.Hechavarria, A. D. C. 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DOI
10.1140/epjc/s10052-020-08651-y
발행일
2020-12-07
유형
Article
저널명
European Physical Journal C
80
12