Production of f2 (1270) meson in pp collisions at the LHC via gluon-gluon fusion in the kt-factorization approach

被引：2

作者：

Lebiedowicz, Piotr ^{[1
]}

Szczurek, Antoni ^{[1
,2
]}

机构：

[1] Polish Acad Sci, Inst Nucl Phys, Radzikowskiego 152, PL-31342 Krakow, Poland

[2] Univ Rzeszow, Coll Nat Sci, Inst Phys, Pigonia 1, PL-35310 Rzeszow, Poland

来源：

PHYSICS LETTERS B | 2020年 / 810卷

关键词：

PARTON DISTRIBUTIONS; MODEL; SCATTERING; COHERENCE; DOMINANCE; TEV;

D O I：

10.1016/j.physletb.2020.135816

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We calculate inclusive cross section for f(2) (1270) tensor meson production via color singlet gluongluon fusion in the k(t)-factorization approach with unintegrated gluon distribution functions (UGDFs). The process may be potentially interesting in the context of searches for saturation effects. The energy-momentum tensor, equivalent to helicity-2 coupling, and helicity-0 coupling are used for the g*g* -> 1 f(2) (1270) vertex. Two somewhat different parametrizations of helicity-2 and helicity-0 tensorial structure from the literature are used in our calculations. Some parameters are extracted from gamma gamma -> f(2) (1270) -> pi pi reactions. Different modern UGDFs from the literature are used. The results strongly depend on the parametrization of the g*g* -> f(2) (1270) form factor. Our results for transverse momentum distributions of 1 2 are compared to preliminary ALICE data. We can obtain agreement with the data only at larger f(2) (1270) transverse momenta only for some parametrizations of the g*g* -> f(2) (1270) form factor. No obvious sign of the onset of saturation is possible. At low transverse momenta one needs to include also the pi pi final-state rescattering. The agreement with the ALICE data can be obtained by adjusting probability of formation and survival of f(2) (1270) in a harsh quark-gluon and multipion environment. The pomeron-pomeron fusion mechanism is discussed in addition and results are quantified. (C) 2020 The Author(s). Published by Elsevier B.V.

引用

页数：10

共 48 条

[1] Measurement of the total cross section from elastic scattering in pp collisions at √s=7 TeV with the ATLAS detector [J].

Aad, G. ;

Abbott, B. ;

Abdallah, J. ;

Khalek, S. Abdel ;

Abdinov, O. ;

Aben, R. ;

Abi, B. ;

Abolins, M. ;

AbouZeid, O. S. ;

Abramowicz, H. ;

Abreu, H. ;

Abreu, R. ;

Abulaiti, Y. ;

Acharya, B. S. ;

Adamczyk, L. ;

Adams, D. L. ;

Adelman, J. ;

Adomeit, S. ;

Adye, T. ;

Agatonovic-Jovin, T. ;

Aguilar-Saavedra, J. A. ;

Agustoni, M. ;

Ahlen, S. P. ;

Ahmadov, F. ;

Aielli, G. ;

Akerstedt, H. ;

Akesson, T. P. A. ;

Akimoto, G. ;

Akimov, A. V. ;

Alberghi, G. L. ;

Albert, J. ;

Albrand, S. ;

Alconada Verzini, M. J. ;

Aleksa, M. ;

Aleksandrov, I. N. ;

Alexa, C. ;

Alexander, G. ;

Alexandre, G. ;

Alexopoulos, T. ;

Alhroob, M. ;

Alimonti, G. ;

Alio, L. ;

Alison, J. ;

Allbrooke, B. M. M. ;

Allison, L. J. ;

Allport, P. P. ;

Almond, J. ;

Aloisio, A. ;

Alonso, A. ;

Alonso, F. .

NUCLEAR PHYSICS B, 2014, 889 :486-548

[2] Neutral pion and η meson production in proton-proton collisions at √s=0.9 TeV and √s=7 TeV [J].

Abelev, B. ;

Abrahantes Quintana, A. ;

Adamova, D. ;

Adare, A. M. ;

Aggarwal, M. M. ;

Aglieri Rinella, G. ;

Agocs, A. G. ;

Agostinelli, A. ;

Salazar, S. Aguilar ;

Ahammed, Z. ;

Ahmad, N. ;

Masoodi, A. Ahmad ;

Ahn, S. U. ;

Akindinov, A. ;

Aleksandrov, D. ;

Alessandro, B. ;

Alfaro Molina, R. ;

Alici, A. ;

Alkin, A. ;

Almaraz Avina, E. ;

Alt, T. ;

Altini, V. ;

Altinpinar, S. ;

Altsybeev, I. ;

Andrei, C. ;

Andronic, A. ;

Anguelov, V. ;

Anson, C. ;

Anticic, T. ;

Antinori, F. ;

Antonioli, P. ;

Aphecetche, L. ;

Appelshaeuser, H. ;

Arbor, N. ;

Arcelli, S. ;

Arend, A. ;

Armesto, N. ;

Arnaldi, R. ;

Aronsson, T. ;

Arsene, I. C. ;

Arslandok, M. ;

Asryan, A. ;

Augustinus, A. ;

Averbeck, R. ;

Awes, T. C. ;

Aysto, J. ;

Azmi, M. D. ;

Bach, M. ;

Badala, A. ;

Baek, Y. W. .

PHYSICS LETTERS B, 2012, 717 (1-3) :162-172

[3]

Achasov N. N., 2015, PISMA ESKP TEOR FIZ, V102, P655

[4] VECTOR-MESON DOMINANCE MODEL IN GAMMA+GAMMA-STAR (Q2)-]F(1270,2+)-]PIPI [J].

ACHASOV, NN ;

KARNAKOV, VA .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1986, 30 (01) :141-144

[5] ρ0 production and possible modification in Au+Au and p+p collisions at √SNN=200 GeV -: art. no. 092301 [J].

Adams, J ;

Adler, C ;

Aggarwal, MM ;

Ahammed, Z ;

Amonett, J ;

Anderson, BD ;

Arkhipkin, D ;

Averichev, GS ;

Badyal, SK ;

Balewski, J ;

Barannikova, O ;

Barnby, LS ;

Baudot, J ;

Bekele, S ;

Belaga, VV ;

Bellwied, R ;

Berger, J ;

Bezverkhny, BI ;

Bhardwaj, S ;

Bhati, AK ;

Bichsel, H ;

Billmeier, A ;

Bland, LC ;

Blyth, CO ;

Bonner, BE ;

Botje, M ;

Boucham, A ;

Brandin, A ;

Bravar, A ;

Cadman, RV ;

Cai, XZ ;

Caines, H ;

Sánchez, MCD ;

Carroll, J ;

Castillo, J ;

Cebra, D ;

Chaloupka, P ;

Chattopadhyay, S ;

Chen, HF ;

Chen, Y ;

Chernenko, SP ;

Cherney, M ;

Chikanian, A ;

Christie, W ;

Coffin, JP ;

Cormier, TM ;

Cramer, JG ;

Crawford, HJ ;

Das, D ;

Das, S .

PHYSICAL REVIEW LETTERS, 2004, 92 (09) :092301-1

[6]

[Anonymous], 2016, THESIS

[7] Measurement of proton-proton elastic scattering and total cross-section at √s=7 TeV [J].

Antchev, G. ;

Aspell, P. ;

Atanassov, I. ;

Avati, V. ;

Baechler, J. ;

Berardi, V. ;

Berretti, M. ;

Bossini, E. ;

Bozzo, M. ;

Brogi, P. ;

Brucken, E. ;

Buzzo, A. ;

Cafagna, F. S. ;

Calicchio, M. ;

Catanesi, M. G. ;

Covault, C. ;

Csanad, M. ;

Csoergo, T. ;

Deile, M. ;

Eggert, K. ;

Eremin, V. ;

Ferretti, R. ;

Ferro, F. ;

Fiergolski, A. ;

Garcia, F. ;

Giani, S. ;

Greco, V. ;

Grzanka, L. ;

Heino, J. ;

Hilden, T. ;

Intonti, R. A. ;

Kaspar, J. ;

Kopal, J. ;

Kundrat, V. ;

Kurvinen, K. ;

Lami, S. ;

Latino, G. ;

Lauhakangas, R. ;

Leszko, T. ;

Lippmaa, E. ;

Lokajicek, M. ;

Lo Vetere, M. ;

Rodriguez, F. Lucas ;

Macri, M. ;

Maki, T. ;

Mercadante, A. ;

Minafra, N. ;

Minutoli, S. ;

Nemes, F. ;

Niewiadomski, H. .

EPL, 2013, 101 (02)

[8] Hadroproduction of scalar P-wave quarkonia in the light-front kT-factorization approach [J].

Babiarz, Izabela ;

Pasechnik, Roman ;

Schafer, Wolfgang ;

Szczurek, Antoni .

JOURNAL OF HIGH ENERGY PHYSICS, 2020, 2020 (06)

[9] Prompt hadroproduction of ηc(1S, 2S) in the kT-factorization approach [J].

Babiarz, Izabela ;

Pasechnik, Roman ;

Schafer, Wolfgang ;

Szczurek, Antoni .

JOURNAL OF HIGH ENERGY PHYSICS, 2020, 2020 (02)

[10]

Baranov SP, 2019, EUR PHYS J C, V79, DOI 10.1140/epjc/s10052-019-7134-4

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