Publications [#331390] of Ashutosh V. Kotwal

Papers Published
  1. Abazov, VM; Abbott, B; Abdesselam, A; Abolins, M; Abramov, V; Acharya, BS; Adams, DL; Adams, M; Ahmed, SN; Alexeev, GD; Alton, A; Alves, GA; Amos, N; Anderson, EW; Arnoud, Y; Avila, C; Baarmand, MM; Babintsev, VV; Babukhadia, L; Bacon, TC; Baden, A; Baldin, B; Balm, PW; Banerjee, S; Barberis, E; Baringer, P; Barreto, J; Bartlett, JF; Bassler, U; Bauer, D; Bean, A; Beaudette, F; Begel, M; Belyaev, A; Beri, SB; Bernardi, G; Bertram, I; Besson, A; Beuselinck, R; Bezzubov, VA; Bhat, PC; Bhatnagar, V; Bhattacharjee, M; Blazey, G; Blekman, F; Blessing, S; Boehnlein, A; Bojko, NI; Borcherding, F; Bos, K; Bose, T; Brandt, A; Breedon, R; Briskin, G; Brock, R; Brooijmans, G; Bross, A; Buchholz, D; Buehler, M; Buescher, V; Burtovoi, VS; Butler, JM; Canelli, F; Carvalho, W; Casey, D; Casilum, Z; Castilla-Valdez, H; Chakraborty, D; Chan, KM; Chekulaev, SV; Cho, DK; Choi, S; Chopra, S; Christenson, JH; Chung, M; Claes, D; Clark, AR; Cochran, J; Coney, L; Connolly, B; Cooper, WE; Coppage, D; Crépé-Renaudin, S; Cummings, MAC; Cutts, D; Davis, GA; Davis, K; De, K; De Jong, SJ; Del Signore, K; Demarteau, M; Demina, R; Demine, P; Denisov, D; Denisov, SP; Desai, S; Diehl, HT; Diesburg, M; Doulas, S; Ducros, Y, Subjet multiplicity of gluon and quark jets reconstructed with the κ⊥ algorithm in pp̄ collisions, Physical Review D, vol. 65 no. 5 (January, 2002), pp. 20, American Physical Society (APS) [doi] .

    Abstract:
    The DØ Collaboration has studied for the first time the properties of hadron-collider jets reconstructed with a successive-combination algorithm based on relative transverse momenta (κ⊥) of energy clusters. Using the standard value D = 1.0 of the jet-separation parameter in the κ⊥ algorithm, we find that the pT of such jets is higher than the ET of matched jets reconstructed with cones of radius R = 0.7, by about 5 (8) GeV at pT ≈90 (240) GeV. To examine internal jet structure, the κ⊥ algorithm is applied within D = 0.5 jets to resolve any subjets. The multiplicity of subjets in jet samples at √s = 1800 GeV and 630 GeV is extracted separately for gluons (Mg) and quarks (Mq), and the ratio of average subjet multiplicities in gluon and quark jets is measured as (〈Mg〉-1)/(〈Mq〉-1) = 1.84±0.15 (stat)±0.18 0.22 (syst). This ratio is in agreement with the expectations from the HERWIG Monte Carlo event generator and a resummation calculation, and with observations in e+e- annihilations, and is close to the naive prediction for the ratio of color charges of CA /CF = 9/4 = 2.25.

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